Shingling A 2 12 Pitch Roof

She used to have a torchdown roof.

Shingling a 2 12 pitch roof.

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. Nails must be 11 or 12 gauge roofing nails corrosion. Asphalt shingles continue to be the most widely installed roof covering option in north america. Shingle roof deck crookedo ver driven under driven proper nailing figure 12 2.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. What is the minimum slope for an asphalt shingle roof. Understand the physics of how a sloped shingle roof works. To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof.

Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12. Some have said it is even against washington state code and should only be on 3 12. The contractor put shingles on which some are telling us is not a good idea as it is a 2 12. A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely.

The calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares. Here s a spot that looked questionable although that spot wasn t actually leaky. The best roofs for a 2 12 pitch roof pitch basics. Current as of august 2020.

A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal. Proper and improper nailing. On thinner decks nails must go at least 1 8 3 2 mm through the deck. For decks 3 4 19 mm thick or thicker nails must go at least 3 4 19 mm into the deck.

Asphalt roofing shingles simply rely on the force of gravity to shed water from rain or snow melt. In the dictionary to shingle is. With roughly a 2 12 slope on this roof it doesn t take much of a ripple on the roof to reverse the slope and cause water to flow back into the shingles. I need some advice for my mom s roof after a poorly installed roofing job by a contractor we had to get estimates from several roofing companies but are getting different answers.