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Is TremPro 644 Silicone Sealant # 0160297 Suitable for Repairing Leaking Trailer Roof

Question:

my trailer roof leak at the metal joint. Can I use your Trempro 644 to repair it? Do I have to clean the other stuff before applying it? Any suggestion how to remove the old sealer? thanks.

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Expert Reply:

The TremPro 644 Silicone Sealant # 0160297 that you referenced is an ideal product for repairing leaks in a trailer roof. This silicone product remains flexible after it cures and will stick to almost any material likely to be found on a trailer roof. Do note it cannot be painted.

You definitely want to remove the old sealer and thoroughly clean the surface to be sealed. A putty knife works for large bits and steel wool can be used to remove the small residue. The cleaner the surface is the better the adhesion of the sealer. It will also be best to apply the sealer when temperatures are not extremely cold or extremely hot. Silicone requires about 24 hours to cure fully but this can vary with temperature.

You will need a standard cartridge-type caulk gun to apply the sealer. These are available at all hardware and home improvement stores.

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