Manual Application Instructions for Liquid Roof®

Liquid Roof is ONLY for Recreational Vehicles, Mobilehomes and Trailers

Surface Preparation

The 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 a scraper and wire brush. Whatever still has good adhesion may remain to be recoated.  Rusty or pitted metal should be wirebrushed to remove loose oxide. Tightly adhering corrosion may be directly coated with Liquid Roof.

Asphaltbased 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 the torn area if desired.  Remove chalk from the white rubber membrane by brushing it with a detergent solution, followed by a water rinse or a working of the 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.

Coverage

Liquid Roof will cover up to 46 square feet per gallon on a very smooth surface.  Normal coverage is 40 to 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 a.m. - 5:30 p.m. EST. 

Mixing Directions

The container is underfilled to allow for the addition of the pre-measured catalyst that is included.  A drill and a mixer (shown below) will be needed to incorporate the catalyst.  A short mixer will suffice for a 1-gallon can..  For 4 or 5gallon pails you MUST use a longshaft mixer. 

The catalyst will be inside the box for 1 gallon and 1gallon repair kits. The catalyst will be located under the lid in four and 5gallon pails.

Mix the rubber material in a can/pail until uniform. Next, center the mixer shaft in the pail/can and begin mixing until a vortex is formed. Slowly pour all of catalyst into the vortex.  Move the mixer up and down and in a circular motion for two to three minutes until all portions of can/pail are uniformly mixed

Application

By brush, roller or squeegee.  A combination of methods might be most effective.  For example, on a flat roof, pour a serpentine bead of material, distribute with a squeegee, finish with a short nap roller to press air out of cracks, and even out the wet film.  The product will selflevel when sufficient material has been applied.  Working time is four to six hours, depending on temperature. A single application of Liquid Roof is preferable to multiple coats.  Apply with a brush around flashings and edges using long, slow strokes. On flat surfaces, the material can be poured, spread with a squeegee and evened out with a short nap roller. Touch-ups may be applied as desired after initial film has cured and the surface is wiped with solvent.

Temperature and Cure Conditions

Liquid Roof> may be applied at any temperature that permits its being spread over the surface. It will waterproof immediately upon application. The solvent will evaporate at a rate governed by temperature but will not be affected by relative humidity. Exposure to freezing temperatures before cure has taken place will not damage the film. The time necessary to reach cure should not be a concern, as this process will occur automatically. Exposure to sunlight will accelerate the curing process. The final film properties of the cured membrane will be the same regardless of the time required to achieve cure.  Liquid Roof® will provide longterm protection even under extreme exposure conditions.

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