3 layers if the roof slope is 5 15.
How to install rolled roofing on a flat roof.
Unlike shingles which apply one by one you can roll out a square of mineral surface rolled roof within minutes.
Prepare the roof by tearing off the old shingles or by preparing for a reroof.
Roll roofing is different.
Roll roofing a small flat roof with greg zanis weatherwatch this quality gaf leak barrier helps keep water out of the most vulnerable areas of your roof inc.
Working with a helper expect to spend half a day installing flashings and roll roofing for a 700 square foot roof with modest complications.
You can t use the rolled roofing materials if the roof slope is more than 25.
Measure 35 inches up from the eaves at several intervals along the roof and mark them.
Do not use the eaves as a guide instead because they can be uneven.
Snap a chalk line as a guide for the first layer roofing.
Technology of laying the roll roofing on a flat roof.
To apply rolled roofing you ll need your roof measurements a broom chalk to mark lines a razor blade to cut the material roofing cement nails and a hammer to hold down the material.
This product is the best way of covering low incline roofs.
How to install roll roofing on low slope roofs.
It has just one layer so it goes.
A typical roof has three layers a felt layer and two layers of overlapping shingles.
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Visit your local hardware store and ask for enough rolled roofing to fit the area of your roof.
Get an instant vendor neutral estimate of roll roof options and costs in your zip code our cost guide has been updated for 2020 to reflect current fair wages and material option costs for roll roofing.
Hammered down rolled roofing should not be used on flat roofs though as this will lead to leaks.
Roll out the underlay and tack it down making sure that it is flat and smooth not buckled or wrinkled anywhere.
For a flat or nearly flat roof use double coverage although a torch down modified bitumen or epdm roof is a better solution.