MOISTURE POROUS BUILDING FURRING STRIP

Abstract

A rigid moisture and air porous building furring strip for building walls and certain roof structures has an elongate outer facer sheet and an elongate inner facer sheet with an outer face. An open cellular core is sealed to and between the facer sheets that is porous to both air and moisture. A soft self-sealing butyl-like adhesive layer is optionally on the outer face of the inner face sheet for attachment of the furring strip to the outside of the build and underneath exterior cladding.

Claims

1. A rigid moisture and air porous building furring strip for building walls and metal roofs, comprising: a.) an elongate outer facer sheet; b.) an elongate inner facer sheet with an outer face; and c.) an open cellular core sealed to and between the facer sheets that is porous to both air and moisture.

2. The furring strip of claim 1, further comprising a soft putty-like self-sealing adhesive layer on the outer face of the inner face sheet.

3. The furring strip of claim 1, wherein the facer sheets and the core are made of plastic.

4. The furring strip of claim 3, wherein the plastic is polypropylene.

5. The furring strip of claim 1, further comprising a porous stainless-steel screen material extending from at least one side of the outer face sheet to an adjacent side of the inner face sheet to prevent insects, such as, beetles, moths, terminates and spiders, and rodents to pass through the core.

6. The furring strip of claim 1, wherein the soft putty-like self-sealing adhesive layer is Neoprene®.

7. The furring strip of claim 1, wherein the soft putty-like self-sealing adhesive layer is butyl.

8. The furring strip of claim 1, wherein the furring strip is 2 inches wide and preferably ⅜ inch to ¾ inch thick.

9. The furring strip of claim 1, further comprising a peelable protective sheet covering the self-sealing adhesive.

10. A rigid moisture and air porous building furring strip for building walls and metal roofs, comprising: a.) a plastic elongate outer facer sheet; b.) a plastic elongate inner facer sheet with an outer face; c.) a plastic open cellular core sealed to and between the facer sheets that is porous to both air and moisture; and d.) a soft putty-like self-sealing adhesive layer on the outer face of the inner face sheet.

11. The furring strip of claim 10, wherein the plastic is polypropylene.

12. The furring strip of claim 10, further comprising a porous stainless-steel screen material extending from at least one side of the outer face sheet to an adjacent side of the inner face sheet to prevent insects, such as, beetles, moths, terminates and spiders, and rodents to pass through the core.

13. The furring strip of claim 10, wherein the soft putty-like self-sealing adhesive layer is chosen from a group of putty-like Neoprene®, self-sealing adhesive and butyl.

14. The furring strip of claim 10, wherein the furring strip is 2 inches wide and preferably ⅜ inch to ¾ inch thick.

15. The furring strip of claim 10, further comprising a peelable protective sheet covering the self-sealing adhesive.

16. A rigid moisture and air porous building furring strip for building walls and metal roofs, comprising: a.) a plastic elongate outer facer sheet; b.) a plastic elongate inner facer sheet with an outer face; c.) a plastic open cellular core sealed to and between the facer sheets that is porous to both air and moisture; d.) a soft putty-like self-sealing adhesive layer on the outer face of the inner face sheet; e.) a porous stainless-steel screen material extending from at least one side of the outer face sheet to an adjacent side of the inner face sheet to prevent insects, such as beetles, moths, terminates and spiders, and rodents to pass through the core; and f.) a peelable protective sheet covering the self-sealing adhesive.

17. The furring strip of claim 16, wherein the plastic is polypropylene.

18. The furring strip of claim 16, further comprising a porous stainless-steel screen material extending from at least one side of the outer face sheet to an adjacent side of the inner face sheet to prevent insects, such as, beetles, moths, terminates and spiders, and rodents to pass through the core.

19. The furring strip of claim 16, wherein the soft putty-like self-sealing adhesive layer is chosen from a group of putty-like Neoprene®, self-sealing adhesive and butyl.

20. The furring strip of claim 16, wherein the furring strip is 2 inches wide and preferably ⅜ inch to ¾ inch thick.

21. The furring strip of claim 16, further comprising a peelable protective sheet covering the self-sealing adhesive.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a perspective front view of the furring strip or rain strip of the present invention;

[0022] FIG. 2 is a top plan view of the furring strip showing the open top and internal open-cellular plastic core for vertical and horizontal airflow;

[0023] FIG. 3 is a bottom plan view of the furring strip showing the protective screen for preventing entrance of insects and rodents;

[0024] FIG. 4 is a right end view of the furring strip with the removable paper partially torn away, the left end view being a mirror image of the this right end view;

[0025] FIG. 5 is a front perspective view of wall siding and roof assemblies partially broken away and partially assembled;

[0026] FIG. 6 is a cross sectional view taken along lines 6-6 of FIG. 5;

[0027] FIG. 7 is an enlarged view of the circled area marked FIG. 7 of FIG. 5 showing the layers of the furring strips;

[0028] FIG. 8 is an enlarged view of the circled area marked FIG. 8 of FIG. 5 showing the layers of the furring strips;

[0029] FIG. 9 is an enlarged view of the circled area marked FIG. 9 of FIG. 6; and

[0030] FIG. 10 is an enlarged view of the circled area marked FIG. 10 of FIG. 6.

DETAILED DESCRIPTION

[0031] Referring to FIGS. 1-4 (and 7 and 8 showing layers), the moisture and air porous building furring strip or rain strip 10 of the present invention may be understood. The strip 10 may be sized to be approximately 2 inches wide and ½ inch thick and preferably ⅜ inch to ¾ inch thick (the distance from the front or outer facer sheet 12 to the back or inner facer sheet 14 of the strip 10). The strip 10 may be eight feet long. In construction, the strip 10 may be cut out of 4 foot by 8 foot sheets. The furring strip 10 includes an outer plastic facer sheet 12 and an inner plastic facer sheet 14 with an outer face 15.

[0032] Between and fastened to facer sheets 12 and 14 is an open-cellular plastic core 16. The plastic core is porous to all forms of water and moisture and air. The core 16 may take any structural form that is porous such as channels, slots, bubbles or honeycombed shaped.

[0033] The strip 10 may have a screen material 30 along its open bottom 18, open top 20, ends 24 or 26 that may be exposed to the environment to prevent insects and rodents from getting inside the exterior wall structure 40. The screen material 30 still advantageously allows for ingress and egress of air to keep the interior wall structure 40 dry by way of the moving air through the cavity between the interior vapor barrier 52 and the exterior cladding or siding 70. The screen material may be made of stainless steel with a 10×10 mesh.

[0034] The furring strip 10 may simply be made of a weather resistant material as plastic such as polypropylene. The screen 30 is held in place on the strip 10 by heat sealing or tape or butyl. On the outer face 15, a soft putty-like material may be applied thereto. Neoprene® 32 (polychloroprene) has been found to work well but is not limiting to other putty-like substances. Lastly, a layer of sticky mastic 34 with a peelable paper covering may be applied to the Neoprene® to protect the stickiness of the rain strip 10 until it is ready to use.

[0035] To attach the current furring strip 10 to any surface, a user removes the removable paper layer 35 from the back of the mastic layer 34. Once the adhesive is exposed, the strip 10 is applied to the surface of the weather resistant barrier 56 of the wall. Preferably, the strip 10 is then rolled with a roller to apply pressure and squish the Neoprene® and securely attach the strip 10 to the barrier 56 of the wall. When pressure is applied to the strip 10, the adhesive on the back face 15 impregnates onto the weather barrier 56, especially at the location of any prior stapler, screw or nail holes.

[0036] Referring to FIGS. 5-10, details of installation, use and benefits of the furring strip or rain strip 10 may be appreciated as used in an exterior wall 40 metal roof 78 structures. More specifically, FIG. 5 shows a perspective view of a partially constructed exterior wall 40 and metal roof 78 while FIG. 6 shows a cross-sectional view of the exterior wall 40 and roof 78 structures.

[0037] The exterior wall structure 40 is typically built on a cement foundation 42. On top the foundation 42 is a wood bottom plate 44. Wall framing 46 typically consists of an array of parallel two-by-four wood studs 48 spaced sixteen inches on center. Twenty-four inches on center are also sometimes used. On top of the two-by-fours are mounted a wood top plate 50. On the interior side of the wall 40 an interior vapor barrier 52 is tacked thereto. Thereafter, sheet rock or dry wall 53 is nailed or screwed over the moisture barrier. Typically, insulation is placed into the spaces between the two-by-fours 48.

[0038] On the outside of the exterior wall structure 40, wall sheathing 54 is screwed or nailed to the outside of the two-by-fours 48. Thereafter, a weather resistant barrier 56 is tacked to the sheathing 54. At the bottom and top of the sheathing 54 and the barrier 52 horizontal bottom and top furring strips 58 and 66 are secured in place on center of the two-by-fours by screws 60 or just the soft sticky Neoprene® with or without the mastic 34 after the paper 35 has been remove. These top and bottom strips 66 and 58 may respectively have a top screen 30 and a bottom screen 30. The exposed to the environment ends 24 and 26 of these strips 66 and 58 maybe open or they may be closed with facer material 12 or 14 or screen material 30. The vertical furring strips 62 are similarly mounted to the weather barrier 56 and on center with the vertical two-by-fours 48 with or without screws or nails 64 as to butt up against the top and bottom furring strips 66 and 58. The two outside vertical furring strips 62 may have outside screens 30. By this arrangement, insects and rodents will not be permitted entrance to the space between the weather resistant barrier 56 and the cladding 70.

[0039] The cladding 70 is conventionally mounted to the furring strips 58, 62 and 66 with screws or nails driven through the rain strips 58, 62 and 66 on center into the two-by-fours 48. The space between the weather resistant barrier 56 and the cladding 70 is now open to air movement and though the furring strips 58, 62 and 66 both horizontally and vertically typically from bottom to top through natural convection. Also, insects and rodents cannot get into this space. Moisture cannot get into the interior of the exterior wall structure 40 as the Neoprene® seals up holes around the existing nails that pass through the furring strips 58, 62 and 66.

[0040] With time, the exterior cladding or siding 70 may need to be replaced. Once the mounting nails or screws are withdrawn, the remaining holes are sealed up by the soft putty-like self-sealing material against the weather resistant layer 56. New cladding is simply mounted to the furring strips 58, 62 and 66 with nails or screws passing therethrough the strips 10 and into the two-by-fours 48 where under the strips 10 a seal is again made around the nails or screws.

[0041] Metal or clay roof structures 78 may be seen in FIGS. 5, 6 and 10. Trusses 80 are installed and secured on top the frame building. Sheathing 82 is installed on top of the trusses with nails or screws set into the trusses 80. Thereafter, weather resistant roof underlayment 84 is placed over the sheathing 82. Vertical and horizontal furring strips 85 and 86 are similarly, as in the wall structure 40, mounted to the roof underlayment 84 and where possible on center with the trusses 80 with the Neoprene® adhesively secured to the roof underlayment 84 with or without screws or nails.

[0042] Thereafter, the metal roof sheets or panels 90 or clay tiles are mounted to the horizontal and vertical furring strips 85 and 86 with nails or screws passing through the furring strips and being sealed therearound by the Neoprene®. Here again, the air may pass through the furring strips from the base of the strips 85 and 86 to the top of the strips 85 and 86 and wick out any moisture and also have a tendency to cool the metal roof 78 from the hot sun. Replacement of the metal or clay roof 78 is simply done by removing the existing metal roof 78 and installing a new metal roof 78 to the furring strips 85 and 86. The furring strips 85 and 86 will seal the previous fastener holes and around the new fastener means.

[0043] Although embodiments of the invention are shown and described herein, it should be understood that various changes and modifications to the presently preferred embodiments will be apparent to those skilled in the art. Such changes and modifications may be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages.