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Setting The Standard Since 1980.

Coating Systems

At Summers Roofing we mainly use two types of coating systems. GacoRoof – Which is used more for repairs, and Hydro-Stop – Which is used more for entire decking or roof systems. However, GacoRoof can be used as an entire roof system and vice versa, Hydro-Stop can be used for repairs, depending on the situations.

First let’s have a look at Gaco…


What is GacoRoof?

GacoRoof 100% Silicone Roof Coating creates a seamless membrane to seal and repair existing roofs and permanently protect against leaks, permanent ponding water and the damaging effects of severe weather. GacoRoof is available in several colors to enhance the aesthetics of any roof. Ideal for use on flat and sloped roofs including, but not limited to, large and small buildings, homes, garages and patio covers, sheds and barns, mobile homes, RVs and more.


100% SILICONE. The unique chemistry of GacoRoof offers peace of mind for a lifetime! It outperforms and outlasts acrylic, urethane, asphalt and Hypalon® coatings.

NO PRIMER REQUIRED. GacoRoof will adhere to most surfaces without a primer including built up roofs, cap sheet, metal, modified bitumen and sprayed polyurethane foam.

REMAINS PERMANENTLY FLEXIBLE. GacoRoof will stay flexible and maintain adhesion, even under permanent ponding water or snow pack. Other coatings become brittle and begin to degrade over time.

WITHSTANDS PERMANENT PONDING WATER. GacoRoof is an excellent choice for flat or sloped roofs. Extremely durable, GacoRoof will not soften, bubble or degrade under permanent ponding water.

NON-SACRIFICIAL. GacoRoof is unaffected by harsh UV rays and temperature extremes.

PREVENTS COSTLY TEAR OFFS. By recoating your weathered roof with GacoRoof, you not only extend the life of your roof, you avoid the need for a time-consuming and costly tear off.

50-YEAR LIMITED MATERIAL WARRANTY. All GacoFlex Coatings Carry a 50 Year Limited Material Warranty.

All Saints Church


Are you sure my roof does not need a primer coat? Do I need to prime metal flashing or other metal surfaces?

OK, so how does GacoRoof compare to acrylic roof coatings?

What substrates does GacoRoof adhere to?

What about EPDM & TPO Roofs?

Does GacoRoof come in other colors?

Does GacoRoof have a UL (Underwriters Laboratory) Approval Rating?

Is there a mildicide in GacoRoof? Does GacoRoof mold or mildew?

Can my GacoRoof be pressure washed?

I know that GacoRoof is perfect for flat roofs. Can I use GacoRoof on my peaked roof?

Can GacoRoof be applied to roof decks or walkways?


Now let’s have a look at Hydro-Stop…


What is HydroStop?

The HydroStop® PremiumCoat® Foundation Coat is a water-based acrylic base coat. Used in conjunction with the HydroStop® PremiumCoat® Finish Coat and the HydroStop® PremiumCoat® Fabric to create the HydroStop® PremiumCoat® System. It provides a fully-adhered, adhesively attached, breathable acrylic membrane and a complete roof cover for existing roofs.


  • Seamless and self-flashing
  • No heavy equipment and minimal tools required
  • No tearing off old, worn-out roof (Some patching may be required)


HydroStop® PremiumCoat® System can be used for re-cover and reroof applications. It can be applied to built-up, EPDM, insulation board, structural concrete, metal, and single- ply.PremiumCoat® Foundation Coat. It can also be used on flashings of all types.