Roofing plate, installation and method therefor
A plate employed for securing substrate to a roofing structure employs a recessed central hub through which a fastener is driven. A barrier membrane covers the plate and is bonded in position to the plate. A sidewall of the recessed hub includes at least one vent opening to equalize pressure within the recessed hub during installation and post-installation.
1 . A roofing plate comprising:
a central recessed portion defining a central axial opening;
a raised portion surrounding said recessed portion;
a wall connecting said raised portion and central portion and defining a vent opening; and
a peripheral rim surrounding said raised portion.
2 . The roofing plate of claim 1 wherein said recessed portion, said wall, said raised portion and said rim are generally symmetric about said axial opening.
3 . The roofing plate of claim 1 wherein said plate is metal.
4 . The roofing plate of claim 3 further comprising a heat activated adhesive applied to said raised portion.
5 . The roofing plate of claim 1 wherein said plate is a one piece integral member.
6 . A method for installing a roofing system comprising:
(a) driving a fastener through a recessed portion of a roofing plate to secure a substrate to a decking structure;
(b) placing a membrane over said plate and substrate;
(c) bonding said membrane to said substrate to form a cavity between said recessed portion and said membrane; and
(d) venting said cavity through a wall of said plate.
7 . The method of claim 6 wherein step 1 (c) further comprises applying an adhesive to said plate.
8 . The method of claim 6 wherein step (c) further comprises heating a heat activated adhesive applied to the plate.
9 . The method of claim 6 wherein step (a) further comprises driving a fastener through a recessed portion of a roofing plate for a multiplicity of roofing plates, and steps (c) and (d) further comprise forming a cavity for each said plate and venting each said cavity.
10 . A roof installation comprising:
a decking structure;
a substrate covering said decking structure;
a roofing plate having a recessed hub with a fastener driven through said hub and into said structure to secure said substrate to said structure;
a membrane overlying said substrate and bonded to said substrate by adhesive and forming a cavity between said recessed hub and said membrane; and
a vent path communicating through said plate with said cavity.
11 . The roof installation of claim 10 wherein said adhesive is heat activated adhesive applied to said plate.
12 . The roof installation of claim 10 wherein said plate is metal.
13 . The roof installation of claim 10 further comprising a multiplicity of roofing plates and fasteners each of which form a cavity and a vent path communicating through said plate with said cavity.
14 . The roof installation of claim 10 wherein said vent path is located in a sidewall of said recessed hub.