When the two layers are pressed together they form a seal.
Rolled out roofing layers.
Roll out and cut roll roofing to cover the length of the roof.
Position and roll out the roofing carefully because it is not easy to reposition then press it into the cement.
Place the top edge of the roofing along the chalk line.
Owens corning deckseal sa sbs cap 39 375 ft w x 32 833 ft l 100 sq ft shasta white roll roofing.
Then set the first course in the cement so it overhangs by about 1 4 inch.
Roll roofing is made from the same asphalt composition material as shingles and it s easier to install.
Some rolls are self adhesive some are nailed down on the roof and some require heat welding during the installation.
There are three systems including glue down torch down and peel and stick.
As it is rolled out the roofing professional will use a torch to heat the bottom of the cap to the top of the base sheet.
The reason why most people go for rolled roofing over shingles when it comes to low plane roofs is primarily the cost.
In a two layer torch down roof the system is complete at this point.
This should give you a 1 inch overhang on the eaves including the top edge of.
If not a third layer with granules is applied in the same way.