Low Pitch Roofs Architectural Shingles

Then apply standard asphalt shingles over the membrane.

Low pitch roofs architectural shingles.

These shingles often cost 200 400 per square. For a low slope residential roof there are two main options. These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.

However those naysayers would be wrong. If you have a low slope roof but would love to have a shingled look rather than other solutions like rolled sheet roofing you are in luck. 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. Gaf asphalt shingles combined with the proper underlayment make ideal low slope roof shingles that do an excellent job of preventing water build up and leaking.

However roofing over old shingles should be done only when the existing shingles and the roof underneath are in good shape. According to the asphalt roofing manufacturers association 301 348 2002 asphalt shingles can be applied to a roof with a pitch as shallow as 2 in 12. The membrane will outlast the shingles and seal around all nail penetrations. I have to say having a low roof slope sure makes it more comfortable to install the shingles.

Cedar or wood shake. Former senior editor roe a. Some will argue that shingles shouldn t be used for low pitch roofs at all. Architectural shingles are available in 30 or 50 year varieties.

Also roofing over old shingles adds a lot of extra weight to a roof which can be especially problematic in high snow load areas. The roofing materials most often used for these pitches include asphalt composite shingles. In combination with iko roof fast cap sheets it provides waterproofing properties and durability for low slope roofs. Most manufacturer and industry recommendations require or at the very least recommend special underlayment or other considerations on roofs between 2 12 and 4 12.

Asphalt shingles should never be applied to roof slopes below 2 12 2 of vertical rise for every 12 of horizontal run or 9 5. Traditional 3 tab shingles made with asphalt composite are the most popular type of shingle and are the most flexible in terms of adapting to many roof pitches. So given your location and the fact that. Iko roof fast base ma is a fiberglass reinforced nailable base with a special film surface designed to be used as one of iko s roof fast low slope roofing components.

As well a slope of 4 12 is most commonly considered the lowest slope for standard shingle installations.