Drip edge with compliant fastener strip and method

Abstract

A drip edge and related method for building roofs includes an elongate, substantially rigid edge strip having a generally L-shape defined by an upper flange with a forward portion protruding outwardly from the bottom edge of the roof and a generally flat rearward portion, and a lower flange disposed at an angle to the upper flange and extending vertically downwardly to cover the bottom edge of the roof and an adjacent portion of the fascia. A compliant fastener strip is connected with the rearward portion of the upper flange and extends rearwardly therefrom. The fastener strip has a flexible construction, which conforms with the underlying surface of the roof, and is configured to receive fasteners therethrough which extend into the roof to anchor the drip edge in place, whereby deformation of the fastener strip during installation of the fasteners does not alter the flat shape of the upper flange, thereby alleviating leakage around the drip edge.

1 . In a building roof construction of the type having shingles overlying an upper surface of an associated roof, and a fascia extending along a bottom edge of said roof, the improvement of a drip edge, comprising: 
 an elongate, substantially rigid edge strip having a generally L-shaped lateral cross-sectional configuration defined by an upper flange having a forward portion thereof protruding outwardly from the bottom edge of said roof and a generally flat rearward portion thereof extending along and covering at least a portion of the upper surface of said roof adjacent the bottom edge thereof, and a lower flange disposed at a predetermined angle relative to said upper flange, extending vertically downwardly from said forward portion of said upper flange and covering the bottom edge of said roof and an adjacent portion of said fascia; and    a compliant fastener strip operably connected with said rearward portion of said upper flange and extending rearwardly away from said upper flange; said fastener strip having a flexible construction which conforms with the underlying portion of the upper surface of said roof, and being adapted to receive fasteners therethrough which extend into said roof to anchor said drip edge in place, whereby deformation of said fastener strip during installation of the fasteners does not alter the flat shape of said upper flange, thereby alleviating leakage around said drip edge.    
   
   
       2 . A building roof construction as set forth in  claim 1 , wherein: 
 said rearward portion of said upper flange is configured to be received directly under and abut a first course of said shingles, such that the weight of said shingles prevents said edge strip from shifting out of its installed position along said roof.    
   
   
       3 . A building roof construction as set forth in  claim 2 , wherein: 
 said fastener strip is constructed from a flexible sheet containing a glass fiber material.    
   
   
       4 . A building roof construction as set forth in  claim 3 , including: 
 an adhesive attaching said fastener strip to said edge strip.    
   
   
       5 . A building roof construction as set forth in  claim 4 , wherein: 
 said edge strip has a one-piece construction.    
   
   
       6 . A building roof construction as set forth in  claim 5 , wherein: 
 said edge strip is constructed from formed sheet metal.    
   
   
       7 . A building roof construction as set forth in  claim 6 , wherein: 
 said edge strip includes a doubled over lip at said forward portion of said upper flange which overhangs said fascia to divert rainwater away from said roof.    
   
   
       8 . A building roof construction as set forth in  claim 7 , wherein: 
 said lower flange includes a lower edge which protrudes outwardly away from the bottom edge of the roof.    
   
   
       9 . A building roof construction as set forth in  claim 8 , wherein: 
 said lower edge of said lower flange is doubled over.    
   
   
       10 . A building roof construction as set forth in  claim 9 , wherein: 
 said upper flange has a width in the range of 0.5-1.50 inches.    
   
   
       11 . A building roof construction as set forth in  claim 10 , wherein: 
 said upper flange has a width of around 1.0 inches.    
   
   
       12 . A building roof construction as set forth in  claim 11 , wherein: 
 said predetermined angle between said upper flange and said lower flange is obtuse.    
   
   
       13 . A building roof construction as set forth in  claim 11 , wherein: 
 said predetermined angle between said upper flange and said lower flange is in the range of 90 degrees-120 degrees.    
   
   
       14 . A building roof construction as set forth in  claim 13 , wherein: 
 said fastener strip is constructed from a woven fiberglass scrim.    
   
   
       15 . A building roof construction as set forth in  claim 14 , wherein: 
 said adhesive comprises a polyurethane adhesive.    
   
   
       16 . A building roof construction as set forth in  claim 14 , wherein: 
 said adhesive comprises a polyvinyl acetate adhesive.    
   
   
       17 . A building roof construction as set forth in  claim 14 , wherein: 
 said edge strip is constructed from roll formed aluminum.    
   
   
       18 . A drip edge for building roof constructions of the type having shingles overlying an upper surface of an associated roof, and a fascia extending along a bottom edge of the roof, comprising: 
 an elongate, substantially rigid edge strip having a generally L-shaped lateral cross-sectional configuration defined by an upper flange having a forward portion thereof shaped to protrude outwardly from the bottom edge of the roof, a generally flat rearward portion thereof shaped to extend along and cover at least a portion of the upper surface of the roof adjacent the bottom edge thereof, and a lower flange disposed at a predetermined angle to said upper flange and shaped to extend vertically downwardly from said forward portion of said upper flange and cover the bottom edge of the roof and an adjacent portion of the fascia; and    a compliant fastener strip operably connected with said rearward portion of said upper flange and extending rearwardly away from said upper flange; said fastener strip having a flexible construction adapted to conform with the underlying portion of the upper surface of the roof, and configured to receive fasteners therethrough which extend into the roof to anchor said drip edge in place, whereby deformation of said fastener strip during installation of the fasteners does not alter the flat shape of said upper flange, thereby alleviating leakage around said drip edge.    
   
   
       19 . A drip edge as set forth in  claim 18 , wherein: 
 said rearward portion of said upper flange is configured to be received directly under and abut a first course of the shingles, such that the weight of the shingles prevents said edge strip from shifting out of its installed position along the roof.    
   
   
       20 . A drip edge as set forth in  claim 19 , wherein: 
 said fastener strip is constructed from a flexible sheet containing a glass fiber material.    
   
   
       21 . A drip edge as set forth in  claim 20 , including: 
 an adhesive attaching said fastener strip to said edge strip.    
   
   
       22 . A drip edge as set forth in  claim 21 , wherein: 
 said edge strip has a one-piece construction.    
   
   
       23 . A drip edge as set forth in  claim 22 , wherein: 
 said edge strip is constructed from formed sheet metal.    
   
   
       24 . A drip edge as set forth in  claim 23 , wherein: 
 said edge strip includes a doubled over lip at said forward portion of said upper flange which is shaped to overhang the fascia to divert rainwater away from the roof.    
   
   
       25 . A drip edge as set forth in  claim 24 , wherein: 
 said upper flange has a width in the range of 0.5-1.50 inches.    
   
   
       26 . A drip edge as set forth in  claim 25 , wherein: 
 said upper flange has a width of around 1.0 inches.    
   
   
       27 . A drip edge as set forth in  claim 26 , wherein: 
 said predetermined angle between said upper flange and said lower flange is obtuse.    
   
   
       28 . A drip edge as set forth in  claim 27 , wherein: 
 said predetermined angle between said upper flange and said lower flange is in the range of 90 degrees-120 degrees.    
   
   
       29 . A drip edge as set forth in  claim 28 , wherein: 
 said fastener strip is constructed from a woven fiberglass scrim.    
   
   
       30 . A drip edge as set forth in  claim 29 , wherein: 
 said adhesive comprises a polyurethane adhesive.    
   
   
       31 . A drip edge as set forth in  claim 29 , wherein: 
 said adhesive comprises a polyvinyl acetate adhesive.    
   
   
       32 . A drip edge as set forth in  claim 29 , wherein: 
 said edge strip is constructed from roll formed aluminum.    
   
   
       33 . In a method for roofing a building of the type having shingles overlying an upper surface of an associated roof, and a fascia extending along a bottom edge of the roof, the improvement comprising: 
 forming an elongate, substantially rigid edge strip having a generally L-shaped lateral cross-sectional configuration defined by an upper flange having a forward portion thereof and a generally flat rearward portion thereof, and a lower flange disposed at a predetermined angle to the upper flange and shaped to extend vertically downwardly from the forward portion of the upper flange;    forming a compliant fastener strip having a flexible construction, which conforms with the underlying portion of the upper surface of the roof, and is adapted to receive fasteners therethrough;    operably connecting the fastener strip with the rearward portion of the upper flange, such that the fastener strip extends away from the upper flange;    positioning the drip edge over the bottom edge of the roof, such that the forward portion of the upper flange protrudes outwardly from the bottom edge of the roof, the flat rearward portion of the upper flange extends along and covers at least a portion of the upper surface of the roof adjacent the bottom edge thereof, and the lower flange extends vertically downwardly from the forward portion of the upper flange and covers the bottom edge of the roof and an adjacent portion of the fascia; and    driving fasteners through the fastener strip and into the roof to anchor the drip edge in place, whereby deformation of the fastener strip during installation of the fasteners does not alter the flat shape of the upper flange, thereby alleviating leakage around the drip edge.    
   
   
       34 . A method as set forth in  claim 33 , including: 
 positioning a first course of shingles abuttingly on top of the rearward portion of the upper flange, such that the weight of the shingles prevents the edge strip from shifting out of its installed position along the roof.    
   
   
       35 . A method as set forth in  claim 34 , wherein: 
 said fastener strip forming step comprises cutting the fastener strip from a sheet of flexible material containing glass fibers.    
   
   
       36 . A method as set forth in  claim 35 , wherein: 
 said connecting step comprises continuously adhering the fastener strip to a lower surface of the upper flange along the rearward portion thereof to form a seal therebetween.    
   
   
       37 . A method as set forth in  claim 36 , wherein: 
 said edge strip forming step comprises roll forming the edge strip from aluminum sheet metal.    
   
   
       38 . A method as set forth in  claim 37 , wherein: 
 said edge strip forming step includes roll forming a doubled over lip at the forward portion of the upper flange which overhangs the fascia to divert rainwater away from the roof.    
   
   
       39 . A method as set forth in  claim 38 , wherein: 
 said fastener strip forming step comprises cutting the fastener strip from a sheet of woven fiberglass scrim.    
   
   
       40 . A method for making a drip edge for building roofs of the type having shingles overlying an upper surface of an associated roof, and a fascia extending along a bottom edge of the roof, comprising: 
 forming an elongate, substantially rigid edge strip having a generally L-shaped lateral cross-sectional configuration defined by an upper flange having a forward portion thereof and a generally flat rearward portion thereof, and a lower flange disposed at a predetermined angle to the upper flange and shaped to extend vertically downwardly from the forward portion of the upper flange;    forming a compliant fastener strip having a flexible construction, which conforms with the underlying portion of the upper surface of the roof, and is adapted to receive fasteners therethrough; and    operably connecting the fastener strip with the rearward portion of the upper flange, such that the fastener strip extends away from the upper flange and covers at least a portion of the upper surface of the roof adjacent the bottom edge thereof, with the lower flange extending vertically downwardly from the forward portion of said upper flange and covering the bottom edge of the roof and an adjacent portion of the fascia, whereby deformation of the fastener strip during installation of the fasteners does not alter the flat shape of the upper flange, thereby alleviating leakage around the drip edge.    
   
   
       41 . A method as set forth in  claim 40 , wherein: 
 said fastener strip forming step comprises cutting the fastener strip from a sheet of flexible material containing glass fibers.    
   
   
       42 . A method as set forth in  claim 41 , wherein: 
 said connecting step comprises continuously adhering the fastener strip to a lower surface of the upper flange along the rearward portion thereof to form a seal therebetween.    
   
   
       43 . A method as set forth in  claim 42 , wherein: 
 said edge strip forming step comprises forming the edge strip from sheet metal.    
   
   
       44 . A method as set forth in  claim 43 , wherein: 
 said edge strip forming step comprises roll forming the edge strip from an elongate strip of aluminum sheet metal.    
   
   
       45 . A method as set forth in  claim 44 , wherein: 
 said edge strip forming step includes roll forming a doubled over lip at the forward portion of the upper flange which overhangs the fascia to divert rainwater away from the roof.    
   
   
       46 . A method as set forth in  claim 45 , wherein: 
 said fastener strip forming step comprises cutting the fastener strip from a sheet of woven fiberglass scrim.