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Frequently Asked Questions

Can Flexible Seal be used indoors?

Flexible Seal is not recommended for indoor use due to the solvent odor. Flexible Seal is a solvent-based product that cures by solvent evaporation and due to the solvent odor, should not be used indoors. 

Before applying Flexible Seal do I need to do any preparation to my roof?

Yes, for best results Flexible Seal should be applied over sound clean, dry surfaces. Clean the area by sweeping all the loose dust and debris off or by rinsing the area and allowing it to thoroughly dry. Do not scrape the old material off. When the old material is scraped off, the felt underneath the roofing material is often damaged, causing a larger leak. After cleaning/preparing the area, apply Flexible Seal over the previously repaired area making sure to overlap the area by a couple of inches all the way around for a good seal.

My roof was repaired in a couple of spots less than a year ago with a roof repair product, and I noticed it has cracked, why?

Most likely the repair product was a product that cracked over a period of several months due to fluctuations in temperature. The cracking is caused by the sealant expanding in the hot months and contracting in the cooler months. The repair product was not flexible enough to recover from the temperature changes.  Flexible Seal is an elastomeric rubber-based product that will expand and contract with temperature fluctuations and not crack. Flexible Seal can easily handle temperature changes of 70ºF without cracking, providing an excellent seal against moisture and the weather elements.

Can Flexible Seal be painted?

Yes, Flexible Seal (cartridge grade and brush grade) can be painted. We recommend painting with latex paint after 24 hours and waiting one week for applying oil-based paint over Flexible Seal. Depending on the weather (rain, high humidity/size of bead), a longer period may be necessary.

Can Flexible Seal be applied over black asphalt roof patch or white roof coatings?

Yes, Flexible Seal will adhere and seal over the old cracked material for a long lasting seal. However Flexible Seal may be slightly discolored when applied over a black asphalt roofing sealer.

An area on the roof has an old application of an asphalt repair product that has cracked. Do I need to scrape off the old material before applying Flexible Seal?

It’s a good idea to clean the area either by sweeping all the loose dust and debris off or by rinsing the area and allowing it to thoroughly dry. Do not scrape the old material off. When the old material is scraped off, the felt underneath the roofing material is often damaged, causing a larger leak. After cleaning/preparing the area, apply Flexible Seal over the previously repaired area making sure to overlap the area by a couple of inches all the way around for a good seal.

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