Roofing plate, installation and method therefor

Abstract

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.