How Do I Shingle A Flat Roof

You should not shingle a flat roof.

How do i shingle a flat roof.

How to shingle a flat roof step 1. Weave and cut the valley on the highest side of the roof. Different roofing materials require different slopes or pitches. Keep in mind that.

Installing flat roof shingles is a process that is complicated and should only be done by professionals. The minimum pitch required for shingles is 2 12 which means for every 12 inches the roof rises 2 inches. Multiply the width by the length and divide the result by 100 to determine the number of. 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.

Adding a pitch to a flat roof requires construction. Roll out a full length piece of underlay and cut it to length with a utility knife starting near one of the long. Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. Known in the trade as vertical racking or staggering this how to lay shingles method enables the roofer to install a single column of shingles all the way to the peak without the wasted back and forth motion necessary to fill several rows of stair steps.

Measure the roof each way. Starting at the bottom of the roof map out a guideline with chalk. The starter strip and first row of shingles must be applied 25 cm from the bottom of the slope roof or main roof above the slope transition. Roll out and cut a second.

A very important detail is where the flat roof is connecting the pitch roof. On top of that many roofers prefer to use a roll out roofing system. Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across. Overlap each metal piece by at least 150 mm 6 and use asphalt plastic cement under each section of overlap.

Know that there are a number of cities that will allow for composition asphalt roof shingles at a two to 12. Many pros shingle in a vertical line up the roof because it s much faster. Then your first shingle goes on the side you are going to cut. The next one goes on the low side.

Understand that most contractors prefer using a roll out roofing as opposed to shingles when roofing low pitch. You want to lay the shingles from the bottom to the top of the valley. Most cities require a slight pitch for a shingled roof. 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.

Start by overlapping a starter from both sides of the valley at the bottom.