Minimum Slope Shingle Roof In Orange County

Underlayment shall be applied shingle fashion parallel to and starting from the eave and lapped 4 inches 51 mm end laps shall be 6 inches and shall be offset by 6 feet.

Minimum slope shingle roof in orange county.

If 4 12 and above is normal and 2 12 is minimum what about properties with roofs in between the two such as a 3 12 pitched roof. Roof slopes of four units vertical in 12 units horizontal 33 percent slope or greater. Asphalt shingles continue to be the most widely installed roof covering option in north america. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units.

Roof pitch multiplier table. There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12. Where the roof sheathing is less than 3 4 inch 19 mm thick the. Normal roof slope for typical installation.

The asphalt shingle manufactures recommend that you install asphalt shingles on a recommended minimum of 4 in 12 or greater however most manufactures will warrant their shingles down to a 2 in 12 pitch if the recommended installation method is used. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing.

Degrees to pitch rise in run table. Asphalt shingles minimum roof slope roof pitch r905 2 2. Low sloped roof shingle installation. So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum.

To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. The minimum roof slope for metal roofs is dependent upon the roof profile. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. You could also opt for a pvc flat roofing membrane.

Complete list of roofing types. Installation on roof slopes below a 2 in 12 pitch is not recommended at all. Run in degrees and as percentage the minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 10 mm head astm f 1667 of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 mm into the roof sheathing.

Asphalt shingles can only be installed on roof slopes of 2 12 or greater. We do install shingles on these in between.