Low Pitch Roofs Architectural Shingles

Former senior editor roe a.

Low pitch roofs architectural shingles.

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. 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 membrane will outlast the shingles and seal around all nail penetrations. That way water flows from the shingles onto the flange and continuing to flow down slope it flows back on the shingles.

Cedar or wood shake. I have to say having a low roof slope sure makes it more comfortable to install the shingles. In combination with iko roof fast cap sheets it provides waterproofing properties and durability for low slope roofs. For a low slope residential roof there are two main options.

As well a slope of 4 12 is most commonly considered the lowest slope for standard shingle installations. Architectural shingles are available in 30 or 50 year varieties. 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. Architectural shingles are a different style of asphalt shingle that are thicker than a 3 tab shingle and layered for an upscale look.

These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch. The roofing materials most often used for these pitches include asphalt composite shingles. 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. 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.

However roofing over old shingles should be done only when the existing shingles and the roof underneath are in good shape. So given your location and the fact that. Some will argue that shingles shouldn t be used for low pitch roofs at all. But other than that a higher roof slope is much better for the shingles.

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. These shingles often cost 200 400 per square. 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. However those naysayers would be wrong.

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.