Waterproof decking method and apparatus

Abstract

A waterproof deck includes a deck subflooring supported on joists adjacent a building, a flashing adjacent a building, and a drip edge attached along the edge of a subflooring where the water runs off the deck. An elastomeric waterproofing material covers the subflooring and a strip of T-bar edging is attached along the edge of the subfloor and has a portion extending over the elastomeric waterproofing material and over the drip edge and another portion extending above the subfloor to form a raised edge therealong. Concrete covers the elastomeric waterproofing material and subfloor to the top edge of the T-bar raised edge so that water on the concrete flooring runs off the deck over the T-bar drip edge and drains from beneath the concrete floor over the drip edge to prevent collection of water over the concrete flooring.

1. A waterproof deck comprising:
 a deck subfloor supported on joists adjacent a building;  
 a drip edge having an inverted, generally L- shaped cross - section with a first portion  attached along the an upper surface of an edge of said deck subfloor and a second portion depending from said first portion and overlaying an end of said deck subfloor whereby water runs off of the deck is adapted to run over the drip edge and off the deck;  
 an elastomeric waterproofing material covering said subfloor and overlaying said first portion of said drip edge and extending downward onto said second portion of said drip edge;  
 a strip of T-bar edging attached along the edge of said subfloor and having one portion extending over said elastomeric waterproofing material and over said drip edge and another portion extending above said subfloor to form a raised edge therealong; and  
 a concrete floor covering said elastomeric waterproofing material and subfloor to a level approximately along the top edge of said T-bar raised edge, whereby water drains off said concrete floor over said T-bar edging and drains from beneath said concrete floor over said drip edge to prevent collection of water below said concrete floor; and  
   a plurality of spacers positioned between said T - bar edging portion and said elastomeric material to thereby form a space under said T - bar edging whereby water accumulated under the concrete floor is adapted to run over the elastomeric material and the drip edge.    
 
     
     
       2. A waterproof deck in accordance with  claim 1  in which a plurality of spacers are positioned under said T-bar edging portion extending over said elastomeric material and drip edge to thereby form a space under said T-bar edging. 
     
     
       3. A waterproof deck in accordance with claim  2   1  including flashing covering the corners between a building and said subfloor. 
     
     
       4. A waterproof deck in accordance with  claim 3  in which said T-bar edging has a drip edge lip therealong spaced from and parallel to said drip edge. 
     
     
       5. A method of making a waterproof deck comprising the steps of:
 attaching a deck subfloor to a building;  
 attaching a first portion of a metal drip edge to along an upper surface of one edge of said deck subfloor whereby a second portion of said drip edge extends downward over an end of said deck subfloor;  
 applying an elastomeric waterproofing material over said subfloor;  
 selecting a T-bar strip of material;  
 attaching said T-bar strip of material to the edge of said deck subfloor with one portion extending over said drip edge and a second portion forming a raised edge; and  
 placing a plurality of spacers between said T- bar strip and said elastomer material to create a drainage space whereby water accumulation below said concrete floor is minimized; and   
 pouring concrete over said elastomer waterproofing material covered subfloor to a level approximately with the top edge of said attached T-bar strip raised edge, whereby a deck is provided with a water runoff over a T-bar strip and a water runoff under said concrete floor and over said drip edge beneath said T-bar strip.  
 
     
     
       6. A method of making a waterproof deck in accordance with  claim 5  including the step of placing a plurality of spacers between said T-bar strip and said elastomer covered subfloor to thereby allow drainage from said subfloor below said concrete floor below said attached T-bar strip. 
     
     
       7. A method of making a waterproof deck in accordance with claim  6   5  including the step of cutting said selected T-bar strip to a predetermined length. 
     
     
       8. A method of making a waterproof deck in accordance with  claim 7  including the step of applying corner flashing between said deck subfloor and an adjacent building. 
     
     
       9. A method of making a waterproof deck in accordance with  claim 8  including the step of attaching a subfloor to building joists. 
     
     
       10. A method of making a waterproof deck in accordance with  claim 9  including the step of selecting said T-bar strip having a drip edge formed thereon. 
     
     
       11. A method of making a waterproof deck in accordance with  claim 10  in which the step of attaching said T-bar strip to the edge of said deck subfloor includes nailing said T-bar strip and said metal drip edge to said deck subfloor. 
     
     
       12. A method of making a waterproof deck in accordance with  claim 10  in which the step of attaching a metal drip edge includes nailing said drip edge to said deck subfloor. 
     
     
       13. The waterproof deck of  claim 1 , wherein said plurality of spacers comprises a separate piece of material positioned between said T- bar edging portion and said elastomeric material.   
     
     
       14. The waterproof deck of  claim 13 , wherein said plurality of spacers comprises  4  inch by  4  inch spacers of elastomer material. 
     
     
       15. The method of  claim 5  wherein said plurality of spacers comprises a separate piece of material positioned between said T- bar edging portion and said elastomeric material.   
     
     
       16. The method of  claim 15 , wherein said plurality of spacers comprises  4  inch by  4  inch spacers of elastomer material.