Roofing felt is sold in rolls and the product label will give information on the area contained.
How to felt a house roof.
Make sure it stays flat.
Roll your felt out on the roof and cut it to fit with a utility knife.
Pry off old roof shingles with pitch fork.
Nail drip edge flashing to lower edge of roof.
Most pros use this line to begin shingling working left and right toward the rakes.
Afterward roll the felt away from you lengthwise along the lower edge about 10 feet 120 in.
Divide the area of your roof by the area of the felt rolls you plan to use and allow an approximate 10 extra for waste.
Step 2 next move onto adding the actual superfelt to the roof.
Then rolling the felt lengthwise move it across the surface of the roof shed.
You will need to begin at the very bottom of one side of the roof.
The summer house in the picture was 3 5m x 3 5m following the above steps i found that i needed 5 strips of felt in total to recover the roof.
As you roll it out make sure that it remains flat.
Let it stand for about 30 minutes and then using galvanized nails and your hammer nail down the first layer.
It is important to point out that you are rolling the felt lengthwise and not up and down when you install roof felt.
Before you put your new felt on the old stuff needs to come off.
Step 1 with a dunster house log cabin it is best to lay a plastic waterproof membrane not supplied over the roof which is then to be secured down with a staple gun in intervals of around 20mm.
Cut the excess membrane leaving a 5mm 10mm overhang.
How to remove felt from a summer house roof.
Begin at the bottom right or bottom left of the roof.
Cover roof deck with 30 pound felt underlayment.
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Roll the felt so that it overhangs the edge by 2 inches.
Nail down loose roof sheathing to rafters.
Next find the center of the roof at the top and the eave then snap a vertical chalk line.
Start rolling the first layer of felt out from the bottom of one side of the roof.