How To Patch Roof Membrane

Replace insulation if needed with like material.

How to patch roof membrane.

Remove damaged membrane and insulation. How to repair a flat roof membrane 1. Remove the paper or film backing from the patch apply the patch to the roof membrane and press it down firmly. Unscrew and remove the large metal washers holding down the fiberboard substrate.

If there is evidence that the. Sweep the area free of dirt and debris using a push broom. If the surface of the existing membrane is badly oxidized it may be possible to enlarge the hole insert the new patch underneath and heat weld to the bottom side of the membrane. Look for seam separation if the installer didn t know how to use a torch properly to fuse the seams together then the.

Ensure that it extends 2 inches beyond the. Spider cracks in the surface the entire surface will have these fine cracks but it could be just in the beginning. Trim the rubber patch to extend. Rinse squeegee or wipe with clean rag.

Locate the source of the leak on the roof then use a utility knife to slice through the rubber roof around the suspected trouble spot. Here insulation was used as a kind of underlayment. Clean the membrane where the patch is. Scrub the repair area.

Apply a thick even coat of edpm primer to the area using a paintbrush. Roll the patch in multiple directions with a roller to remove any air bubbles and fully bond the patch. Decide on the part to be cut away. Find the injury in the single ply membrane.

Remove old caulking material with a scraper.