Before adding the second layer though spread a thin layer of adhesive on the first layer using your trowel.
Refelting a flat shed roof.
We would recommend a different covering such as grp fibre glass.
Simply multiply length x width and you will find the area of one side.
The real beauty of installing a professional quality roofing felt to a shed roof is the utter lack of specialist tools required unlike other high performance roof coverings.
Afterward roll the felt away from you lengthwise along the lower edge about 10 feet 120 in.
Some poor soul had lost the felt from their shed roof that poor soul turned out to be me in the wind a temporary fix with a tarpaulin took three.
This will help the two layers adhere to each other.
Add the second layer.
You can do this by calculating the length and width of each side of your roof.
Our step by step guide will help you get it done quickly and easily.
Thus you will repeat the earlier steps.
The key to weatherproofing your flat roof is adding a total of 3 layers.
Re felt your shed roof.
Start rolling the first layer of felt out from the bottom of one side of the roof.
As you roll it out make sure that it remains flat.
A hammer a craft knife preferably with a hooked blade but not essential an old 2 brush and a flat pry bar as seen in my roofing tools section will help.
Replacing the felt on a shed roof is vital to protect your shed from the elements.
To form the welted drip see edge detail above right cut suitable lengths check but usually about 200mm 8 inch of top sheet nail each length to the timber batten along the edge of the roof with the felt underside facing out and with the sheet hanging down away from the roof ensure that the clean area along the edge of the top sheet line up with the edge of the adjacent sheet.
Begin at the bottom right or bottom left of the roof.
Continue to step by step instructions.
The flat roof is torch on bitumen with torch on flashing this roof has been patched repaired previously torch on felt roofs have an approximate life span of 10 12 years merely as a covering.
During a recent period of very windy weather i noticed chunks of roofing felt blowing down the street.