Low Slope Asphalt Shingle Roof

Asphalt saturated felt along the eaves and lap succeeding courses by 19 inches as shown in figure 2 3.

Low slope asphalt shingle roof.

Guide to roofing underlayment installation on low slope roofs with asphalt shingles. Start with a 19 inch strip of 15 lb. Asphalt shingles continue to be the most widely installed roof covering option in north america. With respect to shingle application roof slopes from 2 12 to less than 4 12 18 5 are called low slope roofs while roof slopes of 4 12 or greater are called normal or standard slopes.

1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products. The usual slope for asphalt shingles is a 4 or greater rise for every horizontal foot of run. Built up roofing is the most popular roofing material used on low sloped roofs. Because of the non absorbent nature of asphalt the shingles themselves provide an element of waterproofing which is why they work well for low slopes.

This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. Self adhesive flashing membrane under the shingles prevents leakage on low slope roofs. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Click to add item white membrane low slope roofing patch corner cover kit to the compare list.

Asphalt shingles can be used on roofs with a slope of 2 12 to 4 12 if double coverage underlayment is used. Some building codes allow as low as a 2 slope with asphalt shingles if additional steps are taken. Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12. When making a selection below to narrow your results down each selection made will reload the page to display the desired results.

This top layer normally is tar over which the gravel is laid. Roof fast 95 base iko roof fast 95 base is a self adhesive product that can easily be cold applied on low slope roofs. The membrane will outlast the shingles and seal around all nail penetrations. Then apply standard asphalt shingles over the membrane.

Iko roof fast low slope roofing components are engineered and manufactured to meet those particular challenges. Minimum roof slope roof pitch r905 2 2. Also if asphalt shingles are installed on a roof slope of 2 12 to 4 12 it shall be provided with a double underlayment application. Low slope roofs present special challenges in terms of preventing unique types of damage.

A 3 per foot slope is considered low but may be acceptable if a double layer of felt is used. Sbs modified asphalt 7 solvent based 3 steel 4 color finish. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. What is the minimum slope for an asphalt shingle roof.

For a low slope residential roof there are two main options.