Low Slope Roof Shingles

Cover the entire low sloped roof area with a self adhered modified bituminous membrane that will act as an ice and water.

Low slope roof shingles.

Some will argue that shingles shouldn t be used for low pitch roofs at all. However those naysayers would be wrong. A 3 per foot slope is considered low but may be acceptable if a double layer of felt is used. 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.

Low slope roofs present a challenge where water is concerned. Some building codes allow as low as a 2 slope with asphalt shingles if additional steps are taken. And by the way the manufacturers instructions i reviewed for the shingles i was interested in buying described installations down to a 2 12 pitch. The usual slope for asphalt shingles is a 4 or greater rise for every horizontal foot of run.

This low slope application requires a double layer of 15 felt underlayment cemented together for a distance extending from the eaves up to a point 24 inches inside the interior wall line of the building. As well a slope of 4 12 is most commonly considered the lowest slope for standard shingle installations. They typically had different underlayment recommendations for low slope roofs 2 12 to 4 12 pitches but that was about it. 3 tab shingles versus laminated shingles for low slope roof.

Low slope roofing shingles.