How to Repair a Leak With a Foam Gap Filler
- 1). Disconnect the flow of water to the leaking pipe. This is usually at a water manifold, individual pipe control valve or the main water supply.
- 2). Allow any heavy leakage to subside now that the water is off. Dry the pipe completely with a cloth to examine the leak source closely. Clean the pipe around the leak with a bowl of warm soapy water. Use a degreaser and sponge if there is any greasy or sticky buildup.
- 3). Position the can of foam gap filler at the point of the leak and spray around the circumference of the pipe with as smooth and steady a stroke as possible. As the filler expands, it should cover the entire leak. Filling the area around the pipe strengthens the bond with the surface to reduce the risk of the leak reoccurring.
- 4). Trim excess filler from the pipe with a sharp utility knife if the material expanded too much or in an unsightly way.
- 5). Leave the filler to dry. Although the material hardens on the exterior in seconds, it takes a few hours to fully solidify and cure.
- 6). Turn the water flow back on. Check the filler for stability and evidence of any further leaking. Inspect the pipe repeatedly for the first few hours and then periodically for a few days. Repeat the process if leaks continue.
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