Surface to be coated should be clean, dry and structurally sound. Fasten loose areas with adhesive (contact cement) or pop rivets. Oil or wax must be completely removed with solvent. Remove loose portions of existing coatings and brittle caulk with scraper and wire brush. Whatever still has good adhesion may remain to be re coated. Rusty or pitted metal should be wire brushed to remove loose oxide. Tightly adhering corrosion may be directly coated with Liquid Roof.
Asphalt based aluminum coatings should be removed as much as possible by wire brush or abrasive disc. Roof cements should be removed and replaced with butyl caulk where necessary. Repair torn rubber with adhesive Butyl Tape. A rubber patch may be applied over torn area if desired. Remove chalk from white rubber membrane by brushing with a detergent solution followed by a water rinse or working surface with a stiff brush. Smooth metal or plastic surfaces should be roughed up to improve adhesion of Liquid Roof®. A deglossing solvent may work on some plastics.
Liquid Roof® will cover up to 46 square feet per gallon on a very smooth surface. Normal coverage is 40-42 square feet per gallon on an average substrate. The required 20 mil film thickness will be achieved when the above spreading rate is used. If you are uncertain how to calculate the amount of material you will need, please contact EPDM Coatings at (610-298-1989) M-F 9:00-5:30 EST.
Saturday, March 19, 2011
Tuesday, March 1, 2011
Pressure wash the entire roof surface to remove all dirt, dust, previous paints and roof coatings that are delaminating and achieve a clean and sound substrate. Some roofs may require special detergents. Call us for recommendations.
Prime the roof to ensure good adhesion of all coatings. We have primers suitable for almost all roof types. Even totally rusted roofs.
All seams, penetrations, non-structural gaps and parapet walls should be flashed. All fasteners should be sealed or capped with elastomeric caulk.
Inspect the roof for defects or flaws. Apply the elastomeric roof coatings to the entire roof surface to produce a seamless, watertight membrane.
- Save up to 50% compared to re-roofing with little or no disruption.
- Reflects up to 90% of the heat. Saves money on cooling.
- Solves roof leaks economically and effectively.
- Includes a 10 year manufacturer's warranty when professionally installed.
Elastomeric coatings are best applied by high pressure airless sprayers. We recommend a model that has a pressure rating of 3000 psi and a flow rate of 3 gallons per minute.