Finished product.
Finished product.
48 - IMG2198761
Applying the second coat of GACO
Finished product.
Sealing the seams with GACO.
Finished product.
Applying the first coat.

Key Benefits

  • Renew weathered and leaking roofs without time-consuming and costly tear-offs
  • Save on labour costs as well
  • Ideal for use on virtually any flat roof (pending inspection)
  • 10 to 20 year labour and material, non pro-rated warranties available
  • Never replace the roof again!

What is GACO?

GacoFlex S20 White Cleanable Solvent-Free Silicone Coating is the first high-solids 100% silicone coating to resist dirt pick-up even after years of exposure, thereby maintaining significantly higher whiteness and solar reflectivity than other silicones. It exhibits self-cleaning properties resulting from local rainfall, and if necessary, can be easily cleaned with GacoWash Concentrated Cleaner. Improved rheology provides better film build on high spots and over granulated or uneven surfaces. GacoFlex S20 develops water sheeting action that allows roofs to dry more quickly, thus reducing dust and dirt interactions with the coating. Like all GacoFlex Silicone Coatings, it withstands permanent ponding water. GacoFlex S20 contains 37% recycled content and does not contain crystalline silica.

How is it Installed?

The surface is first cleaned of all loose dirt, stones, debris and moisture. Then the seams, flashing details and fasteners are sealed. The next step is to roll on the coating system and then clean up. It is that simple!

There is also a spray foam and Gaco coating option. This is a more involved process, but boasts the same benefits as replacement.


GacoFlex S20 Roof Coating System provides a proven, guaranteed solution for renewing your weathered roof. It can be applied to virtually any existing flat roofing surface to create a seamless monolithic, membrane that protects against permanent ponding water, ultraviolet light and severe weather. Call Mr. Roof Repair today to book an assessment of your flat roof and determine whether GacoFlex is the right option for your roof!

Services to Help You Protect Your Home

See All Services