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