R400 Rubber Application for Cement Tile, Barrel Tile and Bermuda Roofs
Thoroughly clean the surface with high pressure water cleaning and/or detergent to remove any film, scale, loose material, oils or foreign material that will inhibit bonding. Take special care to remove any plastic roof cement or “bull” as it is an unstable surface to bond to.
Coat the entire surface with the Cement Catalyst/Slurry mixture. The slurry mix consists of 94lbs of white Portland Cement, 1 1/4 gallons of Cement Catalyst and enough water to make a pancake batter consistency. Apply the mix with a brush or squeegee. Take special care to fill all cracks, holes, and voids with the slurry. The finished surface should be smooth and free of defects that will prevent the R400 Rubber from forming a continuous film.
Apply Pro Bond 200 to the entire substrate by brush, roller or spray.
Fill all pitch pans and coat all flashing and parapet wall junctions, plumbing stacks, penetrations and protrusions with R400 Rubber Fiber.
Apply R400 Rubber to the prepared surface by brush, roller or spray. Apply 2 complete coats, allowing the first to dry completely. Drying time is 1-4 hours depending on the temperature and humidity.
No top coat is needed with R400.
Installation Notes
Do not thin or dilute the R400 Rubber for any reason
The R400 Rubber product must be allowed to form a continuous, unbroken film.
For every 250 square feet of roof, one 5 gallon bucket of R400 must be used in order to obtain the 22 mil thickness required.
