How To Repair Flat Leaky Roof

This will plug it and will also provide an adhesive for the flaps of the membrane to stick to.

How to repair flat leaky roof.

Press the membrane flaps to the cement to reseal the cut. Using a utility knife make a shallow cut until you can remove material around the spot without damaging the layers underneath it. Cut around the damaged area until the membrane rests flat. In most cases the leak is directly below the damaged spot and the damage to the roofing felt is easy to see.

Leaks usually occur at low spots or where the roofing felt has been damaged. Apply roofing cement peel back the layers of the membrane you cut and apply roofing cement to the leak and to the entire section of the roof underneath the membranes you cut away. Make sure to remove all silicone residues. Sometimes doing that is difficult.

If there s still water pooled in the leak area mop it up or soak. A small patch can act as a permanent epdm roof repair for leaks and cracks. Some roofers also suggest using 6d roofing nails to secure the blister flaps. The patch should be adhered from the centre over the hole outwards with a firm hard roller.

For most small punctures you can repair your roof simply by forcing sealant into them. When the membrane is completely dry apply the appropriate roof repair material such as roof cement tar or peel and stick patch. Flat roofs are built up of layers of roofing felt and tar.