How to fix a leak in a valley of shingle roof with Utility Knife only - Warning! do not use Tar
Channel: Flat Roof Doctor
Date: 2022-03-22

This is a common leak in valleys of shingle roofs. Just a utility knife and the leak is fixed. Most people would use tar and caulking to make this roof repair, but that creates more problems.
#shingles
#roof 
#leaks