Do not use felt as a temporary protection against rain.
How to lay roofing felt in a valley.
While laying felt is not an easy job it can be done by anyone who has the patience to deal with it.
Install new flashing metal flashing is often called drip edge along the.
Here are simple steps to get you started.
Start by laying asphalt felt or other underlayment over the roof.
Chalk lines should be snapped 33 5 8 above the eave line.
Step 1 prep work.
The last layer should go over both sides of the roof overlapping both side covered in felt.
Begin to install roof shingles on either roof face.
After this lines should be snapped every 34 as you move up the roof.
Lay the felt paper from the top of the roof valley to the eaves at the roof edge.
When you reach the valley lay the shingles over the valley and trim the edges to the chalk line.
Before laying roof felt all rotten decking must be replaced.
Overlap each row at least 3 to 4 inches.
Felt paper should extend at least 10 inches up each side of the roof valley so use a strip between 20 and 24 inches wide.
Start at the top.
If it gets wet it will wrinkle making it harder to shingle.
Weave and cut the valley on the highest side of the roof.
Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid.
Nail down each valley shingle at least two inches 50 mm back from the chalk line.
You can use a straight edge to achieve a straight cut.
Using your staple gun secure the felt to the roof.
Felt doesn t tear as easily so it s safer to walk on when you re working on steeper pitches.
Use a broad strip of felt paper.
You want to lay the shingles from the bottom to the top of the valley.
Felt works just fine.
How to install felt underlayment for a new roof.
Over driving nails is always a.
Then your first shingle goes on the side you are going to cut.
For most applications 15 lb.
Start by overlapping a starter from both sides of the valley at the bottom.
Installing a roof is much more than just nailing shingles onto some boards.
Felt is laid on a flat roof to help keep the roofing system waterproof.
It starts with installing solid decking usually plywood or oriented.
If you live in an area with inclement weather you should consider using a special ice and water protector.
Most roofing suppliers carry 15 lb.
The next one goes on the low side.
For an apex roof start at the bottom and lay it horizontal the next should overlap as in video so the water runs over the join as it runs off the roof finishing at the apex or top of roof.
If you need to temporarily protect a roof cover it with plastic sheeting or a tarp.
You can center it and align it smoothly with the roof contours as you go down.
