Frequently Asked Questions

Frequently Asked Questions

How much will a new roof cost? 

The cost of your new roof will depend on a lot of factors, the type of roof you choose, how large your roof is and if there is any damage that needs to be fixed before installing a new roof on your business. Our professionals can provide you with an estimate on your roofing installation.  

How do I know if my business needs a new roof? 

If there is unexplained mold, ugly water stains, cracked, curled or missing shingles you may need a new roof. We can help you determine the best plan of action to best protect your business.  

What types of commercial roofing systems do you offer? 

We offer a wide variety of roofing systems including BUR roofs EPDM roofs, metal roofing, PVC Roofs, TPO roofs and garden roofs to meet your needs and budget.  

How do I know which type of roof is right for my business? 

Our professional roofing installers can walk you through all of your commercial roofing options and help you determine the perfect roof for your business.  

How long does it take to install a new roof? 

The time it takes to install a roof or repair a roof will depend on many factors. The size of the job, type of roofing, any existing damage and the weather can all effect how long your commercial roofing installation will take. Our expert roofers can give you a time estimate as well and cost estimate with your free consultation.  

What substrates does GacoRoof adhere to? 

GacoRoof adheres to a multitude of roof types. Suitable substrates include silicone, aged asphalt (not for use on 3-tab asphalt or architectural shingles), aged EPDM and TPO/CPA (may require GacoFlex E5320), built-up, cap sheet, composite, concrete, fiberglass, metal, modified bitumen, torch-down and sprayed polyurethane foam. GacoRoof is perfect for Residential and Commercial buildings, as well as flat and low-pitched roofs, mobile homes, RV’s and campers.  

What about EPDM & TPO Roofs? 

GacoRoof may be applied to Aged EPDM and TPO roofs but may require the use of GacoFlex E5320 2-Part Epoxy Primer/Filler. To verify adhesion, use the GacoRoof AdhesionTestKit, which provides results in just 24 hours. If the test reflects poor adhesion, prime all surfaces with GacoFlex E5320 according to label directions.   

Does GacoRoof come in other colors? 

GacoRoof is available in White, Gray, Green, Light Tan, Rustic, Medium Blue, Black, Brown and Red. GacoRoof White may be tinted Gray using GacoRoof Colorant, which can then be applied as the base or top coat.  

Can GacoRoof be applied with a sprayer? 

GacoRoof should not be sprayed because it is too thick for spray equipment. If GacoRoof is thinned with mineral spirits, it no longer meets the regulations for minimum V.O.C.’s (volatile organic compounds).  

What is skinning? What happens if I don’t use the entire pail right away and a skin forms? 

Skinning is when the topmost layer of coating begins to cure in the pail. Silicone is moisture-cured, so high heat and humidity will cause the product to skin. If surface skins, remove skinned material from container. To minimize skinning over several days, pour a thin layer of 100% mineral spirits on top of product until it is completely covered and do not move pail until ready to reuse. When ready, stir thoroughly with a power mixer. Keep container tightly closed between applications to minimize surface skinning.  

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

There is no mildicide in GacoRoof, because mildew does not grow on the surface of GacoRoof. Unlike acrylic coatings, GacoRoof is inert and does not provide a food source for mildew or mold.  

Can my GacoRoof be pressure washed? 

You can pressure wash GacoRoof at a low pressure (below 2,500 psi).  

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

GacoRoof does cover peaked roofs as well as flat roofs. Use extreme caution when on a pitched roof. Follow all safety guidelines to avoid injury. The reason that we emphasize our flat roof coverage is that flat roofs are notorious for having puddles and drainage problems and acrylics degrade rapidly under those conditions. Up until now, the only choice for building owners with flat roofs was smelly hot asphalt or re-coating every 3 years with an acrylic.  

Since both coats are white, how can I see where to apply the second coat? 

Snap chalk lines as needed to see where to apply the second coat. Alternatively, GacoRoof Colorant can be used to tint one coat (base or top) gray, providing greater color contrast between the two coats.