How to Patch an EPDM Roof: A Step-by-Step Guide
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EPDM (Ethylene Propylene Diene Monomer) roofs are known for their durability, but even tough materials can develop small leaks or tears over time. If you’re facing minor damage, you might not need a full replacement. Instead, learning how to patch an EPDM roof can help extend its lifespan and save money.
Here’s a simple, step-by-step guide to patching your EPDM roof.
Step 1: Identify the Damage
Start by thoroughly inspecting your roof. Look for visible punctures, rips, or water stains. Damage is often found near seams, flashing, or places where objects have fallen or been dragged.
Use a broom to clear the area and make sure there’s no debris hiding the damaged section.
Step 2: Clean the Surface
Before applying any patch, clean the area with a non-abrasive cleaner made for EPDM roofs. Wipe down with a clean rag or cloth and let it dry completely. Any dirt or moisture left behind can prevent the patch from sticking properly.
For homeowners unsure about proper prep, it's a good idea to connect with professionals who offer detailed residential services like EPDM roof repair, ensuring long-lasting results.
Step 3: Cut the Patch
Using a rubber roofing patch (available at most hardware stores), cut a piece at least 2 inches larger than the damaged area on all sides. Round the corners of the patch to help prevent peeling.
Dry-fit the patch over the damaged spot to make sure it fully covers the area.
Step 4: Apply Adhesive
Apply a primer or bonding adhesive designed specifically for EPDM roofs. Use a brush or roller to coat both the roof surface and the underside of the patch. Let the adhesive become tacky, this usually takes a few minutes.
Then, carefully lay the patch over the damaged section, pressing firmly from the center outwards to eliminate air bubbles.
Step 5: Seal the Edges
For added protection, use a lap sealant around the patch’s edges. This will keep out water and help the patch last longer. Make sure the sealant forms a consistent, watertight border all the way around.
Let the patch sit undisturbed for at least 24 hours. If possible, avoid walking on it during this curing period.
When to Call a Pro
While small patches are manageable for handy homeowners, larger damage or multiple problem areas may require a full inspection. Professionals can assess whether a repair is sufficient or if a larger issue is hiding under the surface.
