Remove all loose dirt, oil, rust, chalk, mildew, loose coating or other contaminants, which would prevent maximum adhesion of Dicor Rust Inhibitive Primer. If chalk remains on a previously painted roof, repeated washing may be necessary. Thoroughly rinse with water and allow to dry completely before proceeding. Be sure all surfaces are sound and clean, and all rust has been removed down to bright metal, using mechanical methods such as wire brush, sandpaper or steel wool. Prime clean rust removed areas with Dicor Metal Rust Inhibitive Primer. Seal all fasteners and around all roof protrusions and vent mountings (vents, lander stanchions, etc.) with Dicor Lap Sealant. Seal all joints and roof seams with Dicor Coating Ready Cover Tape, prior to applying the top coat. It is recommended to cover and protect the exterior sidewalls as well as front and rear caps of the RV with plastic sheeting to avoid the coating sticking to surfaces other than the roof. If coating comes in contact with any surface other than the roof, wash it off immediately.
Rust Inhibitive Primer Application: Apply, un-thinned, at the rate of 200 square feet per gallon, per coat. For maximum performance, two coats are required. Apply each coat at right angles to each other by brush or roller. First primer coat must be dry before the second coat of primer is applied. Under normal conditions of 70°F and 50% relative humidity, the second primer coat may be applied within 1 to 2 hours at the same rate as the first coat. In order to prevent any chance of “wash off” of freshly applied primer, do not apply at temperatures below 50°F, or when rainfall, cold, darkness or high humidity are expected within 4 hours after application. During these 4 hours, at least 2 hours should be of direct sunlight. The topcoat may be applied after primer coat is dry.
Clean Up: Clean brushes, tools, and other equipment with soapy water immediately after use. Dried film is difficult to remove from any surface. If the coating is subjected to rain, before it has properly dried, and wash off occurs, it is necessary to immediately wash stained surfaces with soapy water to prevent staining.
