How to Put a Rubber Roof on a Motor Home

Sweep the roof of the motor home with a stiff-bristle brush, removing all debris. Clean any mold from the surface with an all-purpose cleaner, using the brush to scrub the contaminated areas.

Cover the motor home's exterior walls with plastic sheeting, using painter's tape to hold the plastic in place. Run a solid strip of the painter's tape across the top edge of the plastic sheeting, creating a tight seal against the side of the motor home.

Wrap the rooftop air conditioner and any skylights with the plastic sheeting. Secure the plastic sheeting with the painter's tape.

Fill a painter's pan with a rubber roofing primer. The primer helps the rubber roofing material bond to the motor home's existing roof.

Cover the motor home's roof with the rubber roofing primer, spreading the primer with a 3/8-inch-nap paint roller. Work from one end of the motor home toward the other end. Do not skip any areas. Let the primer dry before continuing, following the primer manufacturer's recommended drying instructions. Discard or clean the paint roller, following the manufacturer's directions.

Stir the rubber roofing material with an electric drill equipped with a paint mixer until the material has an even color and texture. Some rubber roofing manufacturers include a catalyst with the rubber roofing material. If the rubber roofing material uses a catalyst, add the catalyst to the rubber roofing material and mix thoroughly with the electric drill.

Fill the painter's pan with the rubber roofing material.

Coat the roof of the motor home with the rubber roofing material, using a 3/8-inch-nap paint roller. Follow the manufacturer's recommended coverage rate -- often one gallon will cover about 40 square feet. Work the roller in the same direction across the entire length of the roof. Let the rubber roofing material dry before continuing.

Apply a second coat of the rubber roofing material to the roof, using the 3/8-inch-nap paint roller, if applicable. Some manufacturers recommend one coat, while others recommend two or more coats. Work the roofing material in a perpendicular direction to the first coat, starting at one end of the roof and working across the motor home. Repeat this procedure for each additional coat, as needed.

Let the rubber roofing material dry completely before removing the plastic sheeting and painter's tape. If the painter's tape covered any small sections of the roof, coat the bare areas with the rubber roofing material, using a 3-inch paintbrush to spread the rubber roofing material.