1. Do I just use it right out of the can? No it comes as a two-part system which you mix just before use. Use a mixer attached to an electric drill. NOTE: Follow mixing instructions carefully. The mixed product cures slowly, you have time to apply it. See # 11 below.

 

2. How do I apply it? After mixing, apply with a brush or roller.

 

3. What additives are there in Liquid Roof/Rubber? There are no additives in the products, it comes in two parts, part one pure liquid rubber in solvent and part 2 the catalyst. When the two parts are mixed, a chemical reaction takes place and the solvent evaporates forming a pure 100% EPDM rubber membrane.

 

4. Can I apply it over silicone products? No, the cured rubber will not adhere correctly to these products and thereby voids the Warranty. Remove all silicone caulks and sealers and re-caulk with butyl rubber caulk. When cured, the Liquid Roof can be applied.

 

5. What if I spill some on my car? If spilled on cars, it can be easily removed with Mineral Spirits within 24 hours. Thereafter, stronger solvents such as Xylene will be effective in removing the rubber but may dull some finishes.

 

6. What about clean-up? Clean up can be accomplished with paint thinner if the material is still liquid. Dispose of unused material according to local government regulations. To remove solid material, use Xylene.

 

7. What if it rains right after I apply it? Unexpected rain showers after application may affect the surface appearance but will not wash material off roof.The roof becomes waterproof as soon as it is applied. Temperature drops below freezing will stop the cure but will not damage Liquid Roof. The cure reaction will resume again whenever adequate temperature returns.

 

8. Can I fill cracks with the liquid rubber? Cracks larger than 1/16 inch should be filled with butyl rubber caulk. Larger openings should use a polyester cloth-butyl rubber tape combination (available).

 

9. How long will it take the rubber to cure? Cure time is controlled by temperature. At 70ºF. and above it will take approximately 14 hours for the rubber to feel solid to the touch. Heavier films may take longer. The lowest temperature at which any cure takes place is 55ºF. At that temperature it would take 3-4 days for the rubber to feel solid to the touch if the wet film was not more than 35 mils. Thick films take longer to cure.

 

10. Must the air/ surface temperature be above 55ºF before Liquid Roof can be applied? No, but temperatures above freezing are preferred for physical comfort. Liquid Roof will waterproof as soon as it is applied but no cure will take place until the temperature exceeds 55ºF.

 

11. How much time is available to work with Liquid Roof after the catalyst has been mixed in? On a hot day (above 80ºF. the working time will be approximately four hours until the rubber becomes noticeably thicker and more difficult to apply. Working time is considerably longer at lower temperatures. The rubber will thicken faster in direct sunlight and when liquid level is low in the container scrape liquid from sides. Put container in a cool place when longer working time is needed. If material is refrigerated (below 50ºF.) after catalyst was added it can be saved and used even weeks later.

 

12. How soon can I use my RV after applying Liquid Roof? As soon as the rubber has solidified and surface is not tacky to the touch.(Usually 24 hr. but check to make sure.)

 

13. Where can Liquid Roof be used? On RV roofs made of metal, aluminum, fiberglass, foam or sheet rubber; to repair leaks on seams and flashing; as rust protection on steel frames and bumpers, on concrete and brick, to waterproof ply wood, masonite and fiberboard; to waterproof canvas and repair old vinyl awnings.

 

14. What about asphalt roofs?. On flat asphalt roofs, the asphalt needs to be primed first with an elastomeric primer. For elastomeric primer Click here. Liquid Rubber is not recommended for asphalt shingles. A primer and several coats of rubber are needed and the cost becomes prohibitive. Also since Liquid Rubber is an elastomeric and asphalt is a thermoplastic, with temperature changes and ageing, shingles will tend to curl.Asphalt is considered an unstable material and there is no warranty on rubber applied over asphalt.