Apply an epdm primer and when touch dry add self adhesive rubber tape 3 around malleable flashing covering the hole.
Seal a leaking flat roof.
For a gap of 1 inch or less caulking or sealant is the best method of repair.
Clean and dry the area you wish to apply flex seal.
This will help the new coating seal where it overlays the old roof coating edges and will reduce the chances of leaks at those locations.
Feathering or tapering the edges of thick but sound roof coating.
Leaks in wooden roofs are commonly caused by a gap between the panels which move during expansion and contraction.
The patch should be adhered from the centre over the hole outwards with a firm hard roller.
A small patch can act as a permanent epdm roof repair for leaks and cracks.
If you take that step be sure to cover the nail heads with tar roof sealant or peel and stick flashing patch.
Be sure to check any areas where the roof comes to a juncture or where there are any added items such as exhaust pipes.
When the membrane is completely dry apply the appropriate roof repair material such as roof cement tar or peel and stick patch.
Step 2 fill a caulking gun with a watertight polyurethane or oil based sealant and hold it at an angle to insert the product directly into the gap.