How Do I Shingle A Flat Roof

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How do i shingle a flat roof.

Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. Start by overlapping a starter from both sides of the valley at the bottom. Materials and installation 1. Center a minimum 610 mm 24 wide minimum 28 gauge pre finished galvanized metal valley liner in the valley and fasten with only enough nails to hold it in place nailing at the edges only.

Different roofing materials require different slopes or pitches. The minimum pitch required for shingles is 2 12 which means for every 12 inches the roof rises 2 inches. You should not shingle a flat roof. The direct answer to this question is yes.

Then your first shingle goes on the side you are going to cut. How to shingle a flat roof step 1. Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across. Roll out and cut a second.

Weave and cut the valley on the highest side of the roof. Understand that most contractors prefer using a roll out roofing as opposed to shingles when roofing low pitch. Know that there are a number of cities that will allow for composition asphalt roof shingles at a two to 12. Roll out a full length piece of underlay and cut it to length with a utility knife starting near one of the long.

This latest project was in early december in lambeth ontario for a residential home that had an existing sloped or shingled roof that needed to tie into a ne. A very important detail is where the flat roof is connecting the pitch roof. Most cities require a slight pitch for a shingled roof. Starting at the bottom of the roof map out a guideline with chalk.

Multiply the width by the length and divide the result by 100 to determine the number of. Overlap each metal piece by at least 150 mm 6 and use asphalt plastic cement under each section of overlap. You want to lay the shingles from the bottom to the top of the valley. Many pros shingle in a vertical line up the roof because it s much faster.

Adding a pitch to a flat roof requires construction. On top of that many roofers prefer to use a roll out roofing system. Armourfix and armourvalley membranes must be installed and extended 60 90 cm up the main roof underneath the shingles in order to assure a waterproof connection. The next one goes on the low side.

Measure the roof each way.