Depending on how the roofs join you may have to cut a slot to work it in far enough.
How to patch repair a felt roof.
Cut a piece of new felt to use as a patch big enough to give above a 50mm 2 inch overlap beyond the repaired blister.
Apply some bitumen adhesive over the repair and beyond to suit the patch and apply it.
You should now be able to see an area of the wooden roof under the felt.
There are a few small rips in the felt about 5cm or 10cm long.
Allow it to dry for the time.
How to patch a tear in roof felt.
I rather not have to get all the tiles removed to repair them.
Begin by removing the shingles down to the wood sheathing and slip a strip of adhesive ice and water barrier available where roofing repair products are sold under the soffit main roof joint.
To replace a small section of roofing felt involves stripping the tiles from the roof and replacing felt between two joists.
I have a normal uk type cold roof with interlocking tiles over the roofing felt.
This will cost around 460 510 made up of.
Lift the torn edge of felt and spray roof and gutter sealant underneath as well as on the area next to it.
Where wind driven rain is working under the roof and causing leaks then the felt will need to be replaced.
Press the patch firmly into place and make sure that the edges are well sealed.
Cut a patch of matching felt that s large enough to fit under the torn portion and cover the area around it.
As the tiles are in a good state i don t have any leaks at present but i rather fix the problem before it becomes an issue.