If this rise is 4 then your roof slope is 4 in 12.
Owens corning roofing for 0 5 12 pitch.
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Owens corning provides estimating guidelines to estimate the amount of shingles nails and underlayment you will need for your roofing project as well as tips for determining your roof slope.
Lay shingle bundles flat.
The deckseal self adhered roofing system is an excellent solution for low slope applications 1 4 12 to 2 12 on residential re roofing jobs.
Owens corning impact resistant hip ridge shingles must be used.
The owens corning deckseal roofing system offers numerous advantages over competitive low slope products.
Roof slopes are always expressed with the vertical rise mentioned first and the horizontal run 12 mentioned second.
Determine your roof pitch.
Roof slopes are always expressed with the vertical rise mentioned first and the horizontal run.
Roof top loading.
If this rise is 4 then your roof slope is 4 in 12.
Minimum 6 inch roof deck boards minimum 3 8 inch plywood minimum 7 16 inch osb sheathing spaced minimum 1 8 inch and maximum 1 4 inch.
Regardless of deck type used the roofing.