San Jose Minimum Roof Slope

Minimum roof covering classification page 4 city of san diego information bulletin 123 january 2020 documents referenced in this information bulletin.

San jose minimum roof slope.

Regardless of the complying energy method selected above a cf 2r must be completed and provided to the inspector. Asphalt shingles continue to be the most widely installed roof covering option in north america. The roof has a steep slope where rise to run ratio is greater than 2 12. Show and specify that the finish grade around the structure shall slope away from the foundation at a minimum of 5 for at least 10 feet from the structure.

What is the minimum slope for an asphalt shingle roof. The underlayment shall be installed over the drip edge along the eaves and under the drip edge at gables rake edges. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Building has a complying radiant barrier installed throughout the roof attic area.

The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. Lap sealants shall be applied in accordance with the approved manufacturer s installation instructions. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Determine the minimum slope of the roof based on the roofing material.

The drip edge shall extend inch below the roof sheathing and a minimum of 2 inches up the roof deck. The minimum slope for standing seam roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. Provide a drip edge at eaves and gables of asphalt shingle roofs. Minimum 1 air space is added between the roof deck and roofing material over the attic area.

In april amanda tobler took a risk. The drip edge shall be mechanically fastened to the roof deck at a maximum of 12 inches with approved fasteners. Adjacent pieces of the drip edge shall be overlapped a minimum of 2 inches. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope.

That works out to about nine degrees if that works better for you. The minimum slope for lapped nonsoldered seam metal roofs with applied lap sealant shall be one half unit vertical in 12 units horizontal 4 percent slope. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.