Moisture Cure Liquid EPDM Rubber
Moisture Cure Liquid Rubber is specially formulated for customers in areas where temperatures are not reaching 55 degrees. Moisture cure is a product above others in that it will dry in temperatures as low as 33 degrees. The temperature can actually fall below 32 ( it will stop the curing process but will NOT harm the product and curing will continue when the temperature is above 32F). The product will also cure in as little as 1-3 hours. In fact Moisture Cure has been a lifesaver for many of our customers who otherwise would need to find a solution other than a liquid coating.
Product Description
- Coating cures in 1-3 hours by absorbing moisture from the air
- Moisture cure is elastic meaning it is capable of stretching 160%
- Product needs to be applied within 45 minutes to an hour after mixing
- Can be applied to a damp surface
- Withstands ponding water and total immersion
- Easily recoatable
- Cures at low temperature
- Ultra Violet stable
- Tolerates low temperatures to minus 50°F
- Can be sprayed without diluting
- 5 Year Shelf Life
- Will adhere to a fully cured film of Pro Flex Primer
- Coating is oil resistant so it can be used on restaurant roofs
Acceptable Substrates
- EPDM Rubber
- Fiberglass
- Glass
- TPO-MUST use ProFlex Primer
- Aluminum-MUST use ProFlex Primer
Application
Add the premeasured catalyst and apply by brush, roller or spray. surface you are coatings may be damp but cannot have water droplets on it. The Moisture Cure coatings have a gel-link structure when at rest. This breaks down quickly under agitation. Moisture Cure will have good adhesion to most substrates except TPO, PVC and aluminum. RV’s customer’s should add 2 cups of bleach to kill any surface mold/mildew along with a standard detergent such as dawn
Begin mechanical agitation to form a vortex. Pour catalyst into vortex and move mixer shaft around container in a descending followed by an ascending motion while making contact with sides and bottom of container so all parts of the liquid are mixed with catalyst. The usability time (pot life) will now be approximately 60 minutes depending on the humidity. To spray Moisture Cure without diluting you need a sprayer minimum of 3000 psi with a minimum fluid flow of 2 gallons per minute
What You Will Need
| GALLON CONTAINERS | 4 & 5 GALLON PAILS |
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BUTYL TAPE AND POLYESTER FABRIC
To strengthen a damaged roof skin or for reinforcing any worn seams.
TOOLS, EQUIPMENT & MIXING INSTRUCTIONS
(Electric drill, mixer shaft, wire brush, sandpaper (60 grits), spatula, paintbrush). The container is under filled to allow for the addition of the premeasured catalyst that is included. An electric drill and a mixer will be needed to incorporate the catalyst. For a 1-gallon can, a short mixer will suffice. For 4- or 5-gallon pails, you MUST use a long shaft mixer. The catalyst will be inside the box for the gallon size boxes and under the lid in 4- and 5- gallon pails.
Comparative Moisture Vapor Transmission (gr/24Hr/sq. meter)
| Liquid EPDM | Acrylic Elastomeric | Silicone | Moisture Cure |
| 1.12 | 216.5 | 79.32 | 66.17 |
EPDM Liquid Rubber vs. Moisture Cure Liquid Rubber
| EPDM | Moisture Cure | |
| Cure rate | 24-36 Hrs. | 1-3 Hrs. |
| Is it hydrophobic? | YES | YES |
| Tolerates damp sufaces | NO | YES |
| Lowest cure temp | 55F | 33F |
| Oil resistant | NO | YES |
| Re-coatable | YES | YES |
| Sprayable without dilution | YES | YES |
| Adheres to cured Proflex | NO | YES |
| UV stable | YES | YES |
| Volume Solids | 64% | 75.6% |
| Transmission ASTM D1653 | 1.12 | 66.17 |
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