Originally Posted By: gbell This post was automatically imported from our archived forum.
I did a house a few weeks ago that had a 2 1/2:12 pitch. Just had new shingles installed due to the hurricanes last year. There was a new bundle of shingles in the garage with instructions on how to install on a 2-4:12 pitch roof. Glad I read the bundle before calling it out.
Originally Posted By: gbell This post was automatically imported from our archived forum.
It gave instructions on how to install the shingles on a 2:12 to 4:12 pitch roof. Of course the changes needed were not visible at the time of the inspection. I could just report that the manufacture allows installation on a 2 1/2:12 pitch roof.
Originally Posted By: ckratzer This post was automatically imported from our archived forum.
James
I’ve installed many a roof in my 25 years of construction experience.
Any good roofer will tell you two layers of felt should be installed under the shingles of a 2:12 to 4:12 pitch.15# felt is acceptable but I always use 30#.Also no fewer than 4 nails should be used in a full shingle and the nails should penetrate the shingle and the sheathing 3/4 of an inch.In newer homes with 7/16 roof sheathing you should be able to see the nails sticking through the under side of the sheathing.In older homes with solid 1x sheathing you may not be able to tell as that sheathing is 3/4 inch thick.
Hope this is helpful,
Cheremie
Kratzer Construction
Kratzer Home Inspections
Originally Posted By: jquinn This post was automatically imported from our archived forum.
thanx Cheremie,
What you're saying makes sense. I was just curious what the manufacturer was calling for. Personally, I still think the old low slope shingles (taller and more overlap) with mopping between layers is the best. But, they're gone now. Not sure if you guys had those down there but I suspect you did.
Only a few snow flurries today, spring must be near.
