Trim the shingles to these lines and cut a 5 cm triangle off the top corner to direct the water into the valley.
How to waterproof roof valley.
Roll it down and then secure it with roofing nails.
Secure it with roofing nails.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
Lay a shingle on the valley without fixing it and see how the rest of them should be installed.
This video is about how to install peel n stick in valley.
Now roll out the roofing material and make it 18 inches wide from the center of the valley.
Check the entire roof valley carefully to locate the source of these problems.
Step 2 remove the shingles.
Hazlett s process involves using specialized tools such as a utility knife fitted with a hook blade a roofer s pry bar and a metal seamer.
Once the roof valley has begun to leak you will need to cover the valley with flashing in order to prevent a repeat of the problem.
To waterproof it use roofing tar along the edges.
Nail the shingles 5 cm back from the chalk line.
In order to lay the flashing the shingles on the roof will have to be removed.