Alternately get more roofing felt and a tube of roofing caulk and glue felt patches over the rips with the caulk.
How to repair a hole in roof felt.
Isolate areas when you run the hose.
Make sure the caulk is rated for the temperatures and apply it liberally so you don t create a water pocket.
Use a caulking gun to apply caulk to seal any holes that appear in the roof.
Repairing felt around the eaves.
Use the putty knife or your finger to spread the caulk around to cover the hole.
To make even minor roof repairs you must have an ordinary ladder and a roof ladder.
Start low soaking the area just above where the leak appears in the house.
For example soak the downhill side of a chimney first then each side then the top on both sides.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
The wheels allow it to be pushed up the roof without dislodging loose tiles.
Screw the batten in place nailing may dislodge tiles.
We had a problem with our shed workshop flat felt roof leaking and needed a quick repair.
The ladder to the roof should have a stand off bracket so it rests against the wall rather than the guttering.
A common problem is when roofing felt on a roof with an enclosed soffit disintegrates around the eaves of a roof.
Wind driven water that would normally flow down the felt and into the gutter instead drips onto the soffit and then back onto the ceiling of the room below through gaps in the felt.