PANELIZED ROOFING SYSTEM

Abstract

A roofing system including a plurality of roofing panels that can be releasably secured to rafters or other supports of the roof by connectors. In embodiments, the connectors can include first and second connectors, each of which can include a plate with a projection extending therefrom, and with the plates defining flanges on each side of the projection. The plates of the first and second connectors are configured to seat on and at least partially extend along one of the rafters of the roof structure and along exterior facing surfaces of adjacent ones of the roofing panels to releasably secure the roofing panels to the rafters.

Claims

1. A roofing system, comprising: a plurality of rafters; a plurality of roofing panels, each of the roofing panels configured to span across a distance defined between one or more rafters of the plurality of rafters; a plurality of connectors each comprising: a projection; and at least one plate defining flanges positioned on each side of the projection; wherein the at least one plate of one or more of the connectors is configured to be secured to one of the rafters of the plurality of rafters; wherein opposing flanges of the connectors are configured to define recesses on opposite sides of the projections and in which adjacent peripheral side portions of a first roofing panel and a second roofing panel are received and are releasably secured together in an array of roofing panels mounted along the plurality of rafters.

2. The roofing system of claim 1, wherein at least some of the connectors comprise a plurality of first and second connectors, and wherein the projection and the flanges of the first connector define a T-shaped cross-section of the first connector, and wherein the projection and the flange of the second connector define a T-shaped cross-section of the second connector.

3. The roofing system of claim 1, wherein at least some of the connectors comprise an I-shaped construction, with each connector including a top plate and a bottom plate with the projection of each connector extending between the top and bottom plate thereof.

4. The roofing system of claim 1, wherein each of the roofing panels comprises a core, a first layer of material overlying the core, and a second layer of material underlying the core.

5. The roofing system of claim 4, wherein the core comprises a polyisocyanurate polystyrene, PVC, polyethylene, polyamide, phenolic material, or a combination thereof; and the first and second layers each comprise a polymer material, metal, wood, or combination thereof.

6. The roofing system of claim 1, wherein the connectors comprise first and second connectors, wherein the first connectors are configured to mount along the rafters, and the second connectors are configured to mount along an exterior facing surface of the roofing panels in an opposing arrangement with the first connectors, and further comprising a plurality of fasteners configured to be extended through the flanges of the first connectors and the second connectors and the roofing panels to releasably connect the roofing panels to the rafters.

7. The roofing system of claim 1, wherein the rafters are positioned at spacings less than the distance of the span of the roofing panels such that at least some of the roofing panels extend across intermediate rafters, and further comprising spacers configured to mount to the intermediate rafters and to the roofing panels so as to support the roofing panels at positions intermediate the peripheral side portions thereof.

8. The roofing system of claim 1, wherein one or more of the roofing panels comprise an exterior layer having an overlap portion extending beyond a lower edge of each of the one or more roofing panels and configured to at least partially overlap a headlap portion of an adjacent roofing panel of a lower course of roofing panels.

9. A roofing system, comprising: a plurality of rafters; a plurality of roofing panels each configured to span a distance between adjacent rafters, each of the roofing panels comprising an upper surface and a lower surface; a membrane positioned over the upper surface of each of roofing panels and configured to resist migration of water therethrough; a plurality of connectors, including: a first connector; and a second connector opposite the first connector; and a plurality of fasteners extending through at least one of the first and second connectors and at least partially though the first and second roofing panels; wherein at least some of the fasteners are configured to fasten the first connector to the rafter and to at least one of the first and second roofing panels, and fasten the second connector to at least one of the first and second roofing panels with adjacent peripheral side portions of the first roofing panel and the second roofing panel engaged and held between the first connector and the second connector so as to couple the first roofing panel and second roofing panel together along the rafter; wherein the membrane positioned over the upper surface of at least the first roofing panel or the second roofing panel includes an overlap portion configured to at least partially cover a seam between an adjacent roofing panel and the first roofing panel or the second roofing panel.

10. The roofing system of claim 9, wherein each of the first and second connectors comprises a pair of flanges and a projection located between the flanges, and wherein the first roofing panel and the second roofing panel are received and engaged between opposing flanges of the first roofing panel and the second roofing panel with the projection of each of the first and second connectors at least partially received between the first roofing panel and the second roofing panel.

11. The roofing system of claim 10, wherein the fasteners extend through at least some of the flanges of the first and second connectors and through the first and second roofing panels to fasten the first and second connectors to the first and second roofing panels.

12. The roofing system of claim 9, wherein the second connector is at least partially secured to the upper surface of the first roofing panel and to the upper surface of the second roofing panel with a sealant.

13. The roofing system of claim 9, wherein each of the roofing panels comprises a core; wherein the core comprises polyisocyanurate, polystyrene, PVC, polyethylene, polyamide, phenolic material, or a combination thereof.

14. The roofing system of claim 13, further comprising one or more layers overlying the upper surface of the core and one or more layers underlying the lower surface of the core; wherein the one or more layers overlying the upper surface of the core and the one or more layers underlying the lower surface of the core each comprise a polymer material, metal, wood, or a combination thereof.

15. A roofing system, comprising: a plurality of rafters; a plurality of roofing panels comprising at least a first roofing panel and a second roofing panel positioned on opposite sides of at least one rafter; a first connector secured to the at least one rafter and to each of the first roofing panel and the second roofing panel such that the first roofing panel and second roofing panel are releasably secured to the at least one rafter; and a second connector positioned opposite the first connector along an upper surface of the first roofing panel and the second roofing panel; and wherein adjacent peripheral side portions of the first roofing panel and second roofing panel are engaged and held between the first connector and the second connector so as to couple the first roofing panel and second roofing panel together along the at least one rafter; a membrane positioned over an upper surface of at least one of the first roofing panel and the second roofing panel and configured to at least partially overlap an upper surface of at least one roofing panel positioned downslope from the first roofing panel or the second roofing panel so as to form a seal configured to resist migration of water between the adjacent roofing panel and the first roofing panel or the second roofing panel.

16. The roofing system of claim 15, wherein each of the first and second connectors comprises a pair of flanges and a projection located between the flanges, and wherein a first one of the flanges is fastened to the first roofing panel and a second one of the flanges is fastened to the second roofing panel with the projection at least partially received along a joint defined between the first roofing panel and the second roofing panel between the first and second roofing panels.

17. The roofing system of claim 16, wherein the projection and the flanges of the first connector define a T-shaped cross-section of the first connector, and wherein the projection and the flange of the second connector define a T-shaped cross-section of the second connector.

18. The roofing system of claim 15, further comprising a plurality of fasteners, at least some of the fasteners configured to be extended through at least some of the first and second connectors and through the first and second roofing panels; wherein the second connector is fastened to the first connector with the adjacent peripheral side portions of the first roofing panel and second roofing panel engaged and held between the first connector and the second connector to couple the first roofing panel and second roofing panel together along the at least one rafter.

19. The roofing system of claim 15, wherein the membrane includes an overlap portion is bonded to the upper surface of the at least one roofing panel and is configured to cover a seam formed between adjacent edges of the at least one roofing panel and the first roofing panel or second roofing panel.

20. The roofing system of claim 15, wherein at least some of the roofing panels of the plurality of roofing panels comprise oriented strand board, laminate panels, wood panels, metal panels, or a combination thereof; and further comprise a core, a first layer of material overlying the core, and a second layer of material underlying the core.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present disclosure, are incorporated in and constitute a part of this specification, illustrate embodiments of this disclosure, and together with the detailed description, serve to explain the principles of the embodiments discussed herein. No attempt is made to show structural details of this disclosure in more detail than may be necessary for a fundamental understanding of the exemplary embodiments discussed herein and the various ways in which they may be practiced.

[0030] FIG. 1 is a schematic exterior perspective view of a roofing system according to an embodiment of the present disclosure.

[0031] FIG. 2 is a schematic cross-sectional view of the roofing system of claim 1.

[0032] FIG. 3 is a schematic isometric exploded view of one example embodiment of a roofing panel according to principles of the present disclosure.

[0033] FIG. 4 is a schematic side elevation view of abutting roofing panels.

[0034] FIG. 5 is a schematic cross-sectional view taken along line 5-5 of FIG. 2.

[0035] FIG. 6 is a schematic cross-sectional view of an alternative rafter configuration.

[0036] FIG. 7 is a schematic cross-sectional view of a roofing system according to another embodiment of the present disclosure.

[0037] FIG. 8 is a schematic cross-sectional view of a ridge of a roof formed with a roofing system according to embodiments of the present disclosure.

DETAILED DESCRIPTION

[0038] The present disclosure will be described generally before referring in additional detail to the various drawing figures attached hereto. In embodiments, a roofing system is provided wherein roofing panels are assembled to rafters and/or other supports to form a roof which can include commercial roof structures as well as residential and other sloped roof structures. The roofing system can include a plurality of roofing panels, a plurality of connectors that can be secured to respective rafters of the roof, and to pairs of adjacent roofing panels of the plurality of roofing panels. In embodiments, the connectors can include a first or bottom connector and a second or top connector. Each of the first connectors can be secured to a bottom or interior side of two adjacent roofing panels and each of the second connectors can be secured to a top or exterior side of two adjacent roofing panels. The first connectors and/or the second connectors can be releasably attached to the respective roofing panels so that one or more of the roofing panels can be removed from the assembled roof while the remainder of the roof remains in the assembled configuration.

[0039] In addition, while the connectors have been illustrated in some non-limiting embodiments as including a pair of opposing connectors, with one or both having a “T” shape or configuration, in other embodiments, the connectors can have a substantially unitary construction. For example, in embodiments, the connectors could be formed with an “I” shape or configuration with a first or bottom plate defining a first pair of flanges (e.g. bottom flanges configured to engage the bottom surfaces of a pair of adjacent panels), a second or top plate defining a second pair of flanges (e.g. top flanges configured to engage the top or exterior facing surfaces of a pair of adjacent panels), and with a projection or web extending between and connecting the first and second plates.

[0040] FIGS. 1 and 2 illustrate an embodiment of a roofing system 101 for forming a roof R according to the present disclosure. The roofing system 101 can include a plurality of roofing panels 103 mounted to rafters 105 by a plurality of connectors including, in embodiments, first connectors 107 (e.g., shown as rafter securing devices), and second connectors 111. As shown in FIG. 2, each of the first connectors 107 can be secured to an interior facing surface 109 of two adjacent roofing panels 103 (e.g. first and second roofing panels 103A/103B) positioned on opposite sides of a rafter 105, and with the side edges 139 of each roofing panel 103 supported by the rafter. In addition, the second connectors 111 (e.g., shown as top securing devices) each can be secured to an exterior facing surface 113 of the adjacent roofing panels 103. As shown in FIG. 2, the first and second connectors 107, 111 can be positioned along the rafters 105 (e.g., extending parallel to the rafters) and along the slope of the roof, with the second connectors 111 positioned opposite the first connectors 107.

[0041] In some embodiments, the connectors 107, 111 can be formed of metal such as aluminum (e.g., oxidized aluminum with a powder coat), or can be formed from synthetic or composite materials, and/or any other suitable materials. The material of the connectors generally will include functional or performance characteristics such as being lightweight while still possessing high strength, rigidity, and Ultraviolet (UV) and weather resistance (e.g. adapted to withstand exposure to sunlight, wind, rain, snow, extreme temperatures and extreme cold). In addition, while FIG. 2 illustrates the connectors as including cooperative first and second connectors 107/111 connected to an interior facing surface 109 and an opposing exterior facing surface 113 of the roofing panels 103, in some embodiments the connectors can comprise a substantially unitary construction, with the first and second connectors formed together and having a substantially “I” beam construction or configuration with a linking inner web projection.

[0042] In embodiments, the roofing panels 103 can include any suitable type of roofing panels. For example, in some embodiments, the roofing panels 103 can have sufficiently robust structural integrity to be spanned across a substantial distance to form a roofing structure of the roof, e.g., extending between widely spaced rafters or other supports without the need for underlying mid-span support rafters. Each roofing panel may be composed of a core 115 and various layers 117/119, including at least one overlaying layer 117 defining an exterior facing surface 113 adapted to withstand exposure to weather (e.g., withstand exposure to sun, wind, rain, snow, extreme temperatures and extreme cold) and also may have an underlying layer 119 defining an interior facing surface 109 that maybe finished and which can serve as the ceiling of a building on which the roofing panels 103 are installed. The roofing panels 103, in some embodiments, can include a foam core configured to be lightweight and easy to handle and install by a small crew or a single installer.

[0043] In one embodiment illustrated in FIG. 3, the roofing panels 103, in one embodiment, each can have a laminated or layered structure with a lightweight foam core 115 sandwiched between outer and/or inner layers 117/119 of one or more other materials. At least one of the materials of the outer and inner layers can include a polymer material, metal or wood such as a plywood, or wood veneer, oriented strand board (OSB), and/or combinations thereof. In embodiments, the layers applied to the core also may include or be covered with a fire-resistant membrane such as, for example, Versashield® Solo brand fire resistant slip sheet available from GAF of Parsippany, N.J. In embodiments, a layer of self-gripping metal can be integrated with and adhered or bonded to one or more of the layers along the outer and/or inner sides of the roofing panel, and can be configured to couple or interconnect the roofing panels 103 along upper and lower edges (e.g., along headlap portions) between roofing panels of upper and lower courses, e.g. such layers can include a plurality of mechanical engagement or gripping features configured to mechanically couple layers together. In other embodiments, a layer of a waterproof membrane configured to resist passage of water therethrough, also can be applied to the core.

[0044] In some embodiments, the roofing panels 103 can include structural insulated panels (SIP) or otherwise can be of a strength sufficient to span a large distance without the need for substantial support from underlying roof rafters 105. For example, the roofing panels 103 and the connectors located therebetween could be configured to be supported on rafters 105 (FIG. 2) that are widely spaced, e.g., rafters arranged at a spacing S of 4 feet or greater on center, e.g. 4 feet to 8 feet, 4 feet to 7 feet, 4 feet to 6 feet, 4 feet to 5 feet, 5 feet to 8 feet, 5 feet to 7 feet, 5 feet to 6 feet, 6 feet to 8 feet, 6 feet to 7 feet, 7 feet to 8 feet, or any suitable distance and in some applications can enable elimination of rafters.

[0045] Alternatively, in embodiments, the roofing panels 103 and the connectors could be configured for being supported by more closely spaced rafters 105 (e.g., rafters 105′ arranged at a spacing of 12 inches to 16 inches on center, such as indicated in FIG. 2, or any suitable distance). In still other embodiments, the roofing panels 103 can be configured to span roof trusses, or span an area between a peak or ridge of the roof and an eave or building wall of the building structure.

[0046] FIGS. 2 and 3 show an embodiment of an exemplary layered structure of a roofing panel 103 according to the present disclosure. The panel core 115 can be made of a lightweight material such as a foam, one example being a polyisocyanurate (ISO) or similar material. Other non-limiting examples of the lightweight material for the panel core 115 include polystyrene, PVC, polyethylene, polyamide, phenolic material, or a combination thereof. A plurality of layers can be applied to the upper or exterior facing surfaces and/or lower interior facing surfaces of the core 115 in a stacked, overlying arrangement as shown in FIGS. 2 and 3. For example, a first or upper layer 117, which can comprise wood, metal, polymer, and/or other suitable materials, is secured to the upper surface of the core 115, such as with an adhesive. A second or lower layer 119, which can comprise wood, metal, polymer, and/or other suitable materials, can be secured to the lower surface of the core 115, such as with an adhesive. Additionally, or alternatively, the first layer 117 and/or the second layer 119 can be attached to the core 115 by welding or otherwise bonding the layers 117, 119 to the core. In some embodiments, one or more of the layers 117, 119 can comprise a self-gripping metal sheet having a series of gripping features such as hooks, tabs, prongs or other engagement features configured to engage and grip and mechanically couple adjacent layers together. In addition, mechanical fasteners also could be used.

[0047] As shown in FIGS. 1 and 4, a third layer, which can comprise an exterior layer 121, which can include a membrane material, can be secured to the upper surface of roofing panel 103 (e.g., to the first layer 117). The exterior layer 121 may comprise a polymer membrane, such as a thermoplastic polyolefin (TPO) material, with desirable properties such as water-proofing, fire resistance or other properties, e.g., including a membrane material, such as Versashield® Solo, PHC, UPN, and/or other suitable materials.

[0048] In embodiments, the roofing panels 103 further could include any suitable number of layers of any suitable materials (e.g., including any of the roofing panel configurations disclosed in the incorporated-by-reference U.S. application Ser. No. 17/215,011). Alternatively, or in addition, any suitable roofing panels could be used, including roofing panels having a construction such as an engineered wood (e.g., oriented strand board), laminated constructions, solid materials, etc.

[0049] In embodiments, as illustrated in FIGS. 1-2, a plurality of roofing panels 103 can be arranged in an abutting relationship along the slope of the roof R. For example, as indicated in FIGS. 1 and 4, edges 139a of a roofing panel 103a can abut respective peripheral side edges 139b of adjacent panels 103b, a first roofing panel 103a can abut a second roofing panel 103b e.g., first immediately downslope and/or upslope along a headlap joint or seam 123. As also shown in FIGS. 1 and 4, an overlap portion 125 of the exterior layer 121 can extend beyond one or more edges 139a/139b of the adjacent roofing panels 103 to at least partially overlap a portion (e.g., a headlap portion) of the respectively adjacent roofing panels 103 along the slope of the roof.

[0050] In embodiments, the overlap portions 125 can be adhered, welded, and/or otherwise bonded or secured to the exterior surface of the adjacent roofing panel 103, so as to form a substantially waterproof seal over the seam 123 to resist migration of water through the seam 123 and between the roofing panels. For example, the overlap portions 125 can be configured with a peel-and-stick adhesive material or film for simple instillation of the roofing panels that can be covered with a release tape that can be removed in the field.

[0051] The roofing panels 103 can be of any suitable size for being mounted to rafters 105 having any suitable spacing. For example, in embodiments, the roofing panels can have a length (e.g., in a direction parallel with the rafters 105) of approximately 4 feet to 16 feet; approximately 4 feet to 14 feet; approximately 4 feet to 12 feet; approximately 4 feet to 10 feet; approximately 4 feet to 8 feet; approximately 4 feet to 6 feet; approximately 6 feet to 16 feet; approximately 6 feet to 14 feet; approximately 6 feet to 12 feet; approximately 6 feet to 10 feet; approximately 6 feet to 8 feet; approximately 8 feet to 16 feet; approximately 8 feet to 14 feet; approximately 8 feet to 12 feet; approximately 8 feet to 10 feet; approximately 10 feet to 16 feet; approximately 10 feet to 14 feet; approximately 10 feet to 12 feet; approximately 12 feet to 16 feet; approximately 12 feet to 14 feet; approximately 14 feet to 16 feet or any suitable length. In some embodiments, the roofing panels can have different lengths arranged in any combination along the slope of the roof for fitting a particular size roof.

[0052] In an exemplary embodiment, the roofing panels 103 (FIG. 2) can have a width (e.g., in a direction that is perpendicular to the rafters 105) of approximately 2-4 feet or greater minus the width of a portion of the connectors 107, 111 as described in more detail below. For example, the roofing panels can be configured to mount on for rafters 105 having a spacing of 4 feet on center, 2 feet on center, 16 inches on center, or other fractions of 4 feet on center). Alternatively, the roofing panels 103 could have any suitable width for mounting to rafters having any suitable spacing, including spacing's greater than 4 feet.

[0053] In embodiments, the roofing panels may have cores 115 that can be made with various thicknesses of lightweight foam board depending on application and desired strength. In some embodiments, the core thickness is 0.75 inches to 12 inches. In other embodiments, the core thickness is 0.75 inches to 11 inches; 0.75 inches to 10 inches; 0.75 inches to 9 inches; 0.75 inches to 8 inches; 0.75 inches to 7 inches; 0.75 inches to 6 inches; 0.75 inches to 5 inches; 0.75 inches to 4 inches; 0.75 inches to 3 inches; 0.75 inches to 2 inches; 0.75 inches to 1 inch. In other embodiments, the core thickness is 1 inch to 12 inches; 2 inches to 12 inches; 3 inches to 12 inches; 4 inches to 12 inches; 5 inches to 12 inches; 6 inches to 12 inches; 7 inches to 12 inches; 8 inches to 12 inches; 9 inches to 12 inches; 10 inches to 12 inches; 11 inches to 12 inches. Additionally, in embodiments, the core thickness is 1 inch to 10 inches; 2 inches to 10 inches; 3 inches to 10 inches; 4 inches to 10 inches; 5 inches to 10 inches; 6 inches to 10 inches; 7 inches to 10 inches; 8 inches to 10 inches; 9 inches to 10 inches; 1 inch to 9 inches; 2 inches to 9 inches; 3 inches to 9 inches; 4 inches to 9 inches; 5 inches to 9 inches; 6 inches to 9 inches; 7 inches to 9 inches; 8 inches to 9 inches; 1 inch to 8 inches; 2 inches to 8 inches; 3 inches to 8 inches; 4 inches to 8 inches; 5 inches to 8 inches; 6 inches to 8 inches; 7 inches to 8 inches; 1 inch to 7 inches; 2 inches to 7 inches; 3 inches to 7 inches; 4 inches to 7 inches; 5 inches to 7 inches; 6 inches to 7 inches; 1 inch to 6 inches; 2 inches to 6 inches; 3 inches to 6 inches; 4 inches to 6 inches; 5 inches to 6 inches; 1 inch to 5 inches; 2 inches to 5 inches; 3 inches to 5 inches; 4 inches to 5 inches; 1 inch to 4 inches; 2 inches to 4 inches; 3 inches to 4 inches; 1 inch to 3 inches; 2 inches to 3 inches; 1 inch to 2 inches. Other core thicknesses can also be provided.

[0054] As shown in FIG. 2, in embodiments, each of the first connectors 107 and the second connectors 111 can have a generally T-shaped cross-section with base or plate 130 defining a pair of mounting flanges 131a, 131b and with a projection 133 extending from the plate 130 and located between the mounting flanges 131a, 131b. In exemplary embodiments, the flanges 131a, 131b and the projections 133 can have a thickness of approximately ⅛ inch to 1 inch; ⅛ inch to % inch; ⅛ inch to ½ inch; ¼ inch to ⅛ inch, ¼ inch to 1 inch; ¼ inch to ¾ inch; ¼ inch to ½ inch; ½ inch to 1 inch; ½ inch to ¾ inch; % inch to 1 inch; or could have any suitable thickness; and the projections 133 can extend from the plates 130 approximately ½ inch to 1 inch; ½ inch to 2 inches; ½ inch to 3 inches; ½ inch to 4 inches; ½ inch to 5 inches; ½ inch to 6 inches; 1 inch to 6 inches; 1 inch to 5 inches; 1 inch to 4 inches; 1 inch to 3 inches; 1 inch to 2 inches; 2 inches to 6 inches; 2 inches to 5 inches; 2 inches to 4 inches; 2 inches to 3 inches; 3 inches to 6 inches; 3 inches to 5 inches; 3 inches to 4 inches; 4 inches to 6 inches; 4 inches to 5 inches; 5 inches to 6 inches; or any suitable distance.

[0055] The first connectors 107 can be mounted along a top side of respective rafters 105 such as by fasteners 135, adhesives, and/or other suitable features so that the flanges 131a/131b of the first connectors 107 extend along the lengths of the rafters 105 (e.g., along the slope of the roof) with their projections 133 extending upwardly, away from the rafters 105. In some embodiments, the roofing panels 103 can be positioned on the first connectors 107 so that, for example, peripheral side portions 137 of each roofing panel 103 are supported on the respective flanges (131a/131b) of the first connectors 107 and so that the peripheral side edges 139 of each roofing panel 103 abut the projection 133.

[0056] As shown in FIG. 2, two adjacent roofing panels 103 (e.g., first and second roofing panels (103a/103b)) are supported by each of the first connectors 107 so that the respective peripheral side portions 137 of the roofing panels are positioned on the respective flanges 131a, 131b on opposing sides of the projection 133 and with the respective peripheral side edges 139 abutting the projection 133. Alternatively, the side edges 139 could be slightly spaced from the projection 133 without departing from the disclosure.

[0057] In embodiments, one of the second connectors 111 can be positioned opposite to each of the first connectors 107 so that the plates 130 and flanges thereof define a recess in which the respective peripheral side portions 137 of the adjacent roofing panels are received and interleafed, and which will contact the exterior facing surfaces 113 of the adjacent roofing panels 103 along the respective peripheral side portions 137 of the adjacent roofing panels with the projections 133 of the second connectors 111 extending downwardly between the respective side edges 139 of the adjacent roofing panels. In exemplary embodiments, one or both of the side edges 139 of the adjacent roofing panels can abut the projections 133 of the second connector 111 and a corresponding first connector 107. Alternatively, the side edges 139 of the adjacent roofing panels could be spaced from the projection without departing from the disclosure. In embodiments, the projections 133 of the connectors can be configured to provide a space therebetween (in a direction parallel to the rafters 105) such that the recesses defined between the opposing flanges of each pair of associated first and second connectors, and in which the respective peripheral side portions 137 of the adjacent roofing panels are received, can be varied or adjusted to accommodate for receipt, engagement and capture of different thickness panels between the first and second connectors.

[0058] In embodiments, the first connector 107 and the second connector 111 can be attached to the roofing panels 103 by respective fasteners 141, 143, for example being received in bores, which can be formed as countersunk bores 142, in the flanges 131a, 131b. In embodiments, the side edges 139 and peripheral side portions 137 of the roofing panels are engaged and captured between the flanges of the first and second connectors, and the fasteners 141 can extend upwardly through the flanges 131a, 131b of the first connector 107 into the roofing panels 103 from the interior facing surfaces 109 of the roofing panels. The fasteners 143 can extend downwardly through the flanges 131a, 131b of the second connector 111 into the roofing panels 103 from the exterior surfaces 113. As shown in FIG. 2, the fasteners 141, 143 can extend partially through a portion or portions of the roofing panels 103, wherein the ends of the fasteners 141, 143 are spaced from the respectively opposing exterior or interior facing surfaces 113, 109 of the roofing panels. In other embodiments, the fasteners 141, 143 could extend any suitable distance into the roofing panels 103 to secure the roofing panels 103 to the connectors.

[0059] As shown in FIG. 5, each of the roofing panels 103 can be secured to each of the connectors 107, 111 by multiple fasteners 141, 143, which can be spaced along the length of the roofing panels 103. In the embodiment shown in FIG. 5, the fasteners 141 are offset from the fasteners 143 along the length of the roofing panels 103, and can extend substantially through the roofing panels. While five fasteners 141 and five fasteners 143 are shown along the length of each roofing panel 103 for each of the connectors 107, 111 in FIG. 5, any suitable number of fasteners 141, 143 could be included.

[0060] In some embodiments, at least the flanges of the second connector 111 further can be secured to the exterior facing surfaces 113 of the roofing panels 103 by a sealant adhesive. Non-limiting examples of sealants can include DuraGrip™ brand adhesive available from GAF of Parsippany, N.J., and/or another water penetration resistant sealant or other suitable material, which can help form a seal (e.g., a waterproof or watertight seal) at a junction between the flanges 131a, 131b of the second connector 111 and the exterior facing surfaces 113 of the roofing panels 103 as well as help create seal between the two adjacent roofing panels 103.

[0061] As shown in FIG. 2, in embodiments, the projections 133 are spaced apart from one another in each corresponding pair of connectors 107, 111. In alternative embodiments, the projections could be otherwise spaced (e.g., could be closer to one another such as for thinner roofing panels 103 or could be farther spaced apart such as for thicker roofing panels 103) or could abut one another. Accordingly, the connectors 107, 111 can accommodate roofing panels 103 having various different thicknesses (e.g., panels that are approximately 1 inch thick, 2 inches thick, 3 inches thick, 4 inches thick, 5 inches thick; 6 inches thick, 7 inches thick, 8 inches thick, 9 inches thick, 10 inches thick, 11 inches thick, 12 inches thick; or any suitable thickness).

[0062] In an exemplary embodiment, the width W (FIG. 1) of the roofing panels 103 can be approximately equal to a distance between the centers of the connectors minus the width of one of the projections 133 thereof. For example, and without limitation, in some embodiments, the roofing panels 103 can be mounted on first connectors that are spaced apart by 4 feet on center (e.g., mounted on rafters arranged at 4 foot spacings), and the width of the roofing panels can be approximately 4 feet minus the thickness of the projection so that the roofing panels 103 fit between the projections of a pair of spaced first connectors 107 mounted to a pair of spaced rafters. In some embodiments, the roofing panels 103 could be manufactured to have a width configured to accommodate for the thickness of the projections or the roofing panels 103; while in other embodiments, the roofing panels could be cut trimmed in the field as needed to fit between the projections prior to installation and assembly along the roof.

[0063] In embodiments where the rafters 105 are spaced by a shorter distance than the width of the roofing panels 103 (e.g., the rafters 105 are arranged at spacing's of 2 feet on center or 16 inches on center) the first connectors 107 can be arranged at different spacings e.g., being spaced at 4 feet on center), one or more spacers 145 can be mounted to supporting intermediate rafters 105 located between the first connectors 107. Only one of the intermediate rafters 105 and spacers 145 is shown in the schematic view of FIG. 2; however, additional intermediate rafters 105 and spacers 145 could be included between the rafters 105 secured to the first connectors 107. In the example embodiment shown schematically in FIG. 2, each spacer 145 can be mounted to the top of a rafter 105 by a fastener 147 and can be mounted to the bottom or interior facing surface 109 of the roofing panel 103 by fasteners 149. Alternatively, the spacer 145 could be otherwise secured to the rafter 105 and/or the roofing panel 103 or could be secured to only one of the rafter 105 or the roofing panel 103 without departing from the disclosure.

[0064] The thickness of the spacer 145 can be the same as the thickness of the plates 130 of the first connectors 107. In some embodiments, the intermediate rafters 105 and the spacers 145 could be omitted and the rafters 105 can be spaced at the same distance as the first connectors 107. For example, the rafters 105 could be spaced at 4 feet on center and one of the first connectors 107 could be secured to each of the rafters 105. In exemplary embodiments with wider spaced rafters 105, a double rafter configuration can be used, such as the double rafter 105′ as shown in FIG. 6.

[0065] In embodiments, the roofing system 101 will be assembled to form a roof R. For example, a plurality of first connectors 107 can be mounted on respective rafters 105 at an appropriate spacing to accommodate the width of the roofing panels 103. The first connectors 107 can be secured along the length of the rafters 105 by the fasteners 135, which can be spaced along the length of the first connectors 107. Spacers 145 also can be mounted along the tops of the intermediate rafters 105, if needed, with the fasteners 149. The roofing panels 103 then can be positioned so that the peripheral side portions 137 thereof are supported on the flanges 131a/131b of respective first connectors 107 so that the side edges 139 of the roofing panels 103 are proximate to or abutting the respective projections 133 of the first connectors 107 (FIG. 2).

[0066] In embodiments, an overlap portion 125 of a TPO membrane applied as one of the layers, e.g., the exterior layer 121 of each roofing panel 103 can be positioned to overlap a headlap portion H of an adjacent roofing panel that is downslope from a first or second roofing panel (FIGS. 1 and 4). The overlap portion 125 can be adhered, welded, or otherwise secured to the exterior surface of the adjacent roofing panel to cover and seal the seam 123 at the interface between the adjacent roofing panels 103a, 103b. As shown in FIGS. 2 and 5, the first connectors 107 can be releasably secured to the peripheral side portions of roofing panels 103 along the interior facing surfaces thereof by the fasteners 141 via the flanges 131a/131b.

[0067] If utilized, the spacers 145 also can be releasably secured to the interior facing surface 109 of the roofing panel 103 with the fasteners 149 (FIG. 2). The second connectors 111 can be positioned opposite to the respective first connectors 107 with the projections 133 of the second connectors at least partially received between the side edges 139 of the roofing panels 103 and with the flanges 131a/131b of the second connectors in contact with the exterior facing surface 113 of the roofing panel 103. In some embodiments, a sealant can be applied to the exterior facing surface 113 and/or the interior of the flanges 131a/131b to form seals between the second connectors 111 and the roofing panels 103. The second connectors 111 also can be releasably secured to the roofing panels with the fasteners 143 or other mechanical connectors. The roofing system 101 could be otherwise erected using alternative joints without departing from the principles of the present disclosure.

[0068] As shown in FIGS. 1 and 2, the roofing panels 103 and the connectors 107, 111 of the roofing system 100 are positioned in an assembled configuration on the rafters 105 to form an array of roofing panels that are coupled together to form the roof R. In embodiments, the roofing panels 103 can be releasably secured to the connectors 107, 111 so that one or more of the roofing panels can be removed from the roof structure while the remaining roofing panels in the roof structure remain in the assembled configuration. For example, if a roofing panel is damaged, it could be removed by removing the second connectors 111 from the damaged roofing panel and the adjacent roofing panels, e.g., by removing the fasteners 143 and pulling the second connectors 111 away from the roofing panels 103. Additionally, the fasteners 141 will be removed from the damaged roofing panel to release the damaged roofing panel from the first connectors 107. Still further, in embodiments where the damaged roofing panel is mounted to intermediate rafters 105 by spacers 145, the fasteners 149 also can be removed from the damaged roofing panel to release the damaged roofing panel from the spacers 145.

[0069] With the damaged roofing panel removed from the roof structure, a replacement roofing panel can be installed in its place. For example, the replacement roofing panel can be secured to the first connectors 107 by the fasteners 141 and to the spacers 145 by the fasteners 149. The overlapping portion 125 of the third layer 121 (e.g., a TPO membrane of the replacement roofing panel) can be adhered to the exterior surface 113 of the adjacent roofing panel downslope from the replacement roofing panel to cover and seal the seam 123 formed therebetween and an overlapping portion 125 of the TPO membrane of an adjacent roofing panel upslope from the replacement roofing panel can be adhered to the exterior surface 113 of the replacement roofing panel to cover and seal the seam 123 therebetween. The second connectors 111 can be repositioned opposite to the respective first connectors 107 and secured to the replacement roofing panel and the respectively adjacent roofing panels with the fasteners 143. In some embodiments a sealant adhesive can be applied to seal the flanges 131a/131b of the second connectors 111 to the exterior surface 113 of the roofing panels along the peripheral side portions thereof.

[0070] In an embodiment shown in FIG. 7, first and second connectors 207, 211 have an alternative cross-section to the T-shaped cross-section of the connectors 107, 111 of FIGS. 1 and 2. For example, the connectors 207, 211 can have respective triangular projections 233a, 233b extending from the respective plates 130 thereof. As shown in FIG. 7, the roofing panels 203 can be configured to be in an abutting relationship when mounted to the first connectors 207 (e.g., so that the side edges of each roofing panel 203 abuts respective side edges of adjacent roofing panels 203). Accordingly, each roofing panel 203 can have a width that is equal to the on center spacing of the first connectors 207 (e.g., the roofing panels 203 can have a width of 4 feet and the rafter connectors 207 can be mounted on rafters 105 that are spaced apart by 4 feet on center).

[0071] Alternatively, the edges of the roofing panels 203 could be spaced apart (e.g., slightly spaced apart). In embodiments, for each location where two adjacent roofing panels 203 abut one another, a chamfer 261 also can be formed in the two adjacent roofing panels 203 at the bottom surfaces 109 (FIG. 7) and an opposing chamfer 263 can be formed in the two adjacent roofing panels 203 at the exterior surfaces 113. As shown in FIG. 7, the chamfers 261, 263 can have a generally V-shaped configuration adapted to at least partially receive the respective triangular projections 233a, 233b when the connectors 207, 211 are mounted to the two adjacent roofing panels 203. Other configurations of the chamfers and projections also can be provided.

[0072] As also shown in FIG. 7, each of the first connectors 207 further can include a mounting bracket 265 that can extend downwardly from the plate 130 along the opposing vertical faces of the respective rafter 105. In an exemplary embodiment, fasteners 235 can extend through the mounting bracket 265 and the associated rafter 105. Alternatively, the first connectors 207 could be secured to the rafters 105 with fasteners 135 via the flanges 131a/131b similarly to the first connectors 107 shown in FIG. 2.

[0073] As shown in FIG. 8, the roofing panels 203 (or the roofing panels 103) can be arranged along a ridge 267 of the roof, and ridge caps 269 can be mounted to transition between the roofing panels 203 along the crest of the ridge 267 (e.g., with fasteners, adhesives, and/or other suitable features). In some embodiments, the ridge cap 269 can include cap shingles, and/or can include a ridge vent extending along the ridge 267.

[0074] Any of the features of the various embodiments of the disclosure can be combined with replaced by, or otherwise configured with other features of other embodiments of the disclosure without departing from the scope of this disclosure. The configurations and combinations of features described above and shown in the figures are included by way of example.

[0075] The present disclosure has been described herein in terms of examples that illustrate principles and aspects of the present disclosure. The skilled artisan will understand, however, that a wide gamut of additions, deletions, and modifications, both subtle and gross, may be made to the presented examples without departing from the spirit and scope of the present disclosure.