As well a slope of 4 12 is most commonly considered the lowest slope for standard shingle installations.
Low pitched shingle roof installation.
The acceptable underlayment installation options for low slopes are described in the canadian standards association asphalt shingle application standard csa a123 51 as follows.
Cover the entire low sloped roof area with a self adhered modified bituminous membrane that will act as an ice and water.
However low slope installation means we take everything from job site safety and panel seaming to water and ice shield into consideration.
Drip edge or drip cap is either plastic or sheet metal.
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.
I have to say having a low roof slope sure makes it more comfortable to install the shingles.
Install peel and stick roofing in a similar manner.
These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch.
It not only protects the roof but it also protects the fascia.
The roofing materials most often used for these pitches include asphalt composite shingles.
A corresponding editor paul fisette replies.
But other than that a higher roof slope is much better for the shingles.
Then apply standard asphalt shingles over the membrane.
That way water flows from the shingles onto the flange and continuing to flow down slope it flows back on the shingles.
What are gaf asphalt shingles.
Install roll roofing when the temperature is at least 50 degrees fahrenheit to keep the material from cracking.
At nelson contracting we proudly offer and install gaf asphalt shingles for both high and low pitch roofs.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
Shingles that are not self sealing must be hand sealed with asphalt roofing cement.
The cabo one and two family dwelling code permits the installation of asphalt shingles on roofs with a slope as low as 2 12 if the shingles are double coverage self sealing versions.
The main consideration when installing a low slope roof is leak prevention.