A reinforced notched sub-purlin is formed by a top flange, one or more vertical webs, one or more base flanges, one or more notches, and at least one reinforcement. The top flange extends the entire length of the reinforced notched sub-purlin. The vertical web(s) extend from the top flange, and the one or more notches are formed by removing a portion of the vertical web (where only one vertical web is used) or by separating adjacent vertical webs (where a plurality of vertical webs are used). A base flange extends from the vertical web(s) in a direction opposite the direction in which the top flange extends from the vertical web. The at least one reinforcement is provided on the vertical web(s) and provides enhanced stiffness, thus improving ability of the reinforced notched sub-purlin (and a roof or wall panel installed thereon) to resist forces resulting from, for example, wind and snow.

A method includes obtaining a roofing membrane. A first layer of the roofing membrane is applied along a length of a roofing substrate covering a first portion of the roofing substrate. At least a first edge of the first layer is fastened to the roofing substrate. A second layer of the roofing membrane is applied over the first layer along the length of the roofing substrate such that a first edge of the second layer overlies the second edge of the first layer. The first edge of the second layer and the second edge of the first layer are fastened to the roofing substrate using a second fastener in a fastening zone along the length the roofing substrate. The second layer is reoriented such that the second layer overlies the fastening zone and covers a second portion of the roofing substrate adjacent the first portion of the roofing substrate.

A method and system for adhering roofing products to a supporting roof substrate, wherein ballast rock from a pre-existing roof insulation system is removed thereby exposing one or more layers of pre-existing insulation products supported by the roof substrate. In the case of new construction, the method contemplates installation of one or more layers of insulation products supported by the roof substrate. Core holes are formed through the one or more layers of insulation products thereby exposing the roof substrate. An anchor is attached to the roof substrate in each core hole void, and a binding agent is applied to each core hole void until the binding agent fills the core hole void, whereby the one or more layers of insulation products and roof substrate are locked together, preventing shifting of the insulation products without the need for adding ballast rocks thereon

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 releasibly secure the roofing panels to the rafters.

A method includes obtaining a roofing membrane. A first layer of the roofing membrane is applied along a length of a roofing substrate covering a first portion of the roofing substrate. At least a first edge of the first layer is fastened to the roofing substrate. A second layer of the roofing membrane is applied over the first layer along the length of the roofing substrate such that a first edge of the second layer overlies the second edge of the first layer. The first edge of the second layer and the second edge of the first layer are fastened to the roofing substrate using a second fastener in a fastening zone along the length the roofing substrate. The second layer is reoriented such that the second layer overlies the fastening zone and covers a second portion of the roofing substrate adjacent the first portion of the roofing substrate.

Support members for a roof system are provided to allow for positioning panels of a roof apart from building members so that building components, such as insulation may be placed between the roof panels and the building members. The support members may be utilized in new buildings or to retrofit existing buildings. Each of the support members may comprise a single support member that has a base portion operatively coupled to an offset portion that is operatively coupled to an upper portion. One or more channels may be provided in the base portion, offset portion, and/or the upper portion to provide structural support and to allow the support members to be operatively coupled to each other and other building members without the need for additional components.

Support members for a roof system are provided to allow for positioning panels of a roof apart from building members so that building components, such as insulation may be placed between the roof panels and the building members. The support members may be utilized in new buildings or to retrofit existing buildings. Each of the support members may comprise a single support member that has a base portion operatively coupled to an offset portion that is operatively coupled to an upper portion. One or more channels may be provided in the base portion, offset portion, and/or the upper portion to provide structural support and to allow the support members to be operatively coupled to each other and other building members without the need for additional components.

A method includes obtaining a roofing membrane. A first layer of the roofing membrane is applied along a length of a roofing substrate covering a first portion of the roofing substrate. At least a first edge of the first layer is fastened to the roofing substrate. A second layer of the roofing membrane is applied over the first layer along the length of the roofing substrate such that a first edge of the second layer overlies the second edge of the first layer. The first edge of the second layer and the second edge of the first layer are fastened to the roofing substrate using a second fastener in a fastening zone along the length the roofing substrate. The second layer is reoriented such that the second layer overlies the fastening zone and covers a second portion of the roofing substrate adjacent the first portion of the roofing substrate.

A steep slope roofing panel system includes an underlayment and a plurality of roofing panels installed atop the underlayment. The panels may be installed to provide both protection from the environment and watershedding. Alternatively, the panels and the underlayment may share the watershedding functions of the roof, with one as a primary watershedding component and the other as an auxiliary watershedding component. The roofing system may be custom manufactured off-site based upon predetermined measurements and characteristics of a roof and its protrusions. Alternatively, the roofing system may be custom manufactured at the job site based upon such measurements and characteristics. Each panel may be assigned to a location on the roof and may include imprinted instructions regarding cutting and/or bending the panel to form flashing, drip edges, or other features, as well as the panel's location and installation sequence on the roof.

A reinforced notched sub-purlin is formed by a top flange, one or more vertical webs, one or more base flanges, one or more notches, and at least one reinforcement. The top flange extends the entire length of the reinforced notched sub-purlin. The vertical web(s) extend from the top flange, and the one or more notches are formed by removing a portion of the vertical web (where only one vertical web is used) or by separating adjacent vertical webs (where a plurality of vertical webs are used). A base flange extends from the vertical web(s) in a direction opposite the direction in which the top flange extends from the vertical web. The at least one reinforcement is provided on the vertical web(s) and provides enhanced stiffness, thus improving ability of the reinforced notched sub-purlin (and a roof or wall panel installed thereon) to resist forces resulting from, for example, wind and snow.