How To Shingle A Low Slope Roof

That way water flows from the shingles onto the flange and continuing to flow down slope it flows back.

How to shingle a low slope roof.

Attach drip edge along the edge of the roof with roofing cement. Low slope roofs present a challenge where water is concerned. If you don t place the drip edge properly. To install the flange one shingles to about the level of the pipe then nails the flange on and then continues by putting the shingles over the flange.

Roofs at the lower end of the range about 4 12 to 6 12 are relatively easy to walk and work on. A 3 per foot slope is considered low but may be acceptable if a double layer of felt is used. The acceptable underlayment installation options for low slopes are described in the canadian standards association asphalt shingle application standard csa a123 51 as follows. For anything less than that you should use a roofing material specifically made for low slope roofs.

The usual slope for asphalt shingles is a 4 or greater rise for every horizontal foot of run. Some will argue that shingles shouldn t be used for low pitch roofs at all. A handy roof slope estimator can help you determine if your roof slope is likely too low for shingles. Some building codes allow as low as a 2 slope with asphalt shingles if additional steps are taken.

For a low slope residential roof there are two main options. Cover the entire low sloped roof area with a self adhered modified bituminous membrane that will act as an ice and water. 2 where the roof is not visible consider upgrading to a single ply roofing intended for low slope roofs. The arma s residential manual for asphalt roofing recommends that asphalt shingles on low slope roofs be applied over a nonperforated single layer of adhesive backed bituminous membrane installed to the manufacturer s specifications or over a double layer of asphalt impregnated felt paper.

However those naysayers would be wrong. Extend the front edge of the drip edge so it runs off the roof and into the guttering. 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.