How to Patch a Single Ply Membrane Roof

Step-by-Step Guide

1. 1

   Step 1: Identify the problem.

   Find the injury in the single-ply membrane.
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   Step 2: Decide on the part to be cut away.

   Remove damaged membrane and insulation. , Here insulation was used as a kind of underlayment. , Start with a simple, all-purpose cleaner/degreaser, such as 409 or Simple Green. , Rinse and thoroughly dry the area to be patched. , Work across peeling away release film in stages while pressing in place as you go.
   
   One source of this material may be a building supply center or a recreational vehicle supply store. , This requires utilizing a firm roller to assure contact. , Notice on the left where the sealant is beginning to be spread only slightly to be sure it is still thick but well guided into place.
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   Step 3: Replace insulation if needed with like material.

4. 4

   Step 4: Clean the membrane where the patch is to be applied.

5. 5

   Step 5: Remove any soapy film.

6. 6

   Step 6: Line up patch correctly.

7. 7

   Step 7: Roll the butyl backed tape firmly into place.

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   Step 8: Caulk around the edges of the patch with a bead of polyurethane sealant and cover the seam consistently.

Detailed Guide

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