Darren Posted May 6, 2012 Report Share Posted May 6, 2012 I'm pretty sure the normal overhang is 3/4 to 1 inch. Does anyone have that on paper? Click to Enlarge 51.44 KB Link to comment Share on other sites More sharing options...
Marc Posted May 6, 2012 Report Share Posted May 6, 2012 Certainteed Shingle Applicator's Manual, 9th edition, page 93, Chapter 10 - Three-Tab Shingles: Make sure there is 1/2" left overhanging both rake and eaves if drip edge is being used. If you are not using drip edge, make the overhand 3/4". Marc Link to comment Share on other sites More sharing options...
John Kogel Posted May 6, 2012 Report Share Posted May 6, 2012 At least it's a straight edge. I wouldn't make a big deal about it. Click to Enlarge 42.16 KB Link to comment Share on other sites More sharing options...
hausdok Posted May 6, 2012 Report Share Posted May 6, 2012 NAHB Residential Construction Performance Guidelines states 3/4-inch. Most manufacturer's instructions I see specify no greater than 3/4 inch beyond support. I think your answer is 3/4 inch. Not to get off-topic, but around here maybe - maybe - one roofer in a thousand installs drip edge at the eaves and it's normal to find the roof extending an inch to an inch and a half at the rake and anything from about an inch to three inches at the eaves. This is a typical "drip edge" here. How would you like to be the poor sap trying to clean that gutter without damaging that bottom course? ONE TEAM - ONE FIGHT!!! Mike Link to comment Share on other sites More sharing options...
Jerry Simon Posted May 6, 2012 Report Share Posted May 6, 2012 At least it's a straight edge. I wouldn't make a big deal about it. Click to Enlarge 42.16?KB I'd at least make it a small deal. Under the weight of ice & snow, those will probably bend over and at least crack. Link to comment Share on other sites More sharing options...
Darren Posted May 7, 2012 Author Report Share Posted May 7, 2012 To be honest, this particular roof was about 3 weeks old. I'm more concerned about wind uplift and tearing the shingles off. Link to comment Share on other sites More sharing options...
John Kogel Posted May 7, 2012 Report Share Posted May 7, 2012 At least it's a straight edge. I wouldn't make a big deal about it. Click to Enlarge 42.16?KB I'd at least make it a small deal. Under the weight of ice & snow, those will probably bend over and at least crack. I did say trim the edge in my pic. I was talking about Darren's overhang. Snap a chalkline. Use an old fine tooth Skilsaw blade, running backwards. Done. Link to comment Share on other sites More sharing options...
hspinnler Posted May 10, 2012 Report Share Posted May 10, 2012 Owens Corning provided me with a letter so I would have a backup: Download Attachment: .pdf"] DRIPEDGE_OVERHANG2[1].pdf 46.74 KB Link to comment Share on other sites More sharing options...
Bill Kibbel Posted May 10, 2012 Report Share Posted May 10, 2012 Mel is the head of Building Science & Technoligy? Link to comment Share on other sites More sharing options...
John Dirks Jr Posted May 10, 2012 Report Share Posted May 10, 2012 I'm pretty sure the normal overhang is 3/4 to 1 inch. Does anyone have that on paper? Click to Enlarge 51.44?KB I sometimes see wind damaged shingles when there's excessive overhang like that. Especially on the gable ends like in that picture. Link to comment Share on other sites More sharing options...
Darren Posted May 10, 2012 Author Report Share Posted May 10, 2012 Thanks Hank! Link to comment Share on other sites More sharing options...
John Kogel Posted May 10, 2012 Report Share Posted May 10, 2012 Mel is the head of Building Science & Technoligy? His assistant is cute but she can't spell. [] Link to comment Share on other sites More sharing options...
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