If the old layer of felt roofing is in good enough condition then a liquid system repair can be applied.
How to repair a flat felt roof.
We had a problem with our shed workshop flat felt roof leaking and needed a quick repair.
Apply some bitumen adhesive to the exposed surface and fold back the segments.
For most small punctures you can repair your roof simply by forcing sealant into them.
A number of these products are available at rawlins paints.
Diy temporary flat roof repair for felt roofs this is often a paint on fixfrom a tin like the repair videos at the top.
Instead of replacing the felt roof we decided to use a product call.
Press down the top layer into the adhesive.
A waste of time if your felt roof has the problem.
Permanent flat roof repair this can either be a patch of torched on roofing felt or a layer on top of your existing.
Cut around the damaged area until the membrane rests flat.
Using a utility knife make a shallow cut until you can remove material around the spot without damaging the layers underneath it.
Sometimes doing that is difficult.
For older felt roofing a patch of torched on roofing with add an additional layer and fix the damage.