Painting Old Metal Roof

Choose a product designed for use on outdoor metal applications.

Painting old metal roof.

Apply the primer with a roller using a paint brush to access. Terne is best painted with an oil based paint. The first was their basic coating hp 1000 followed by two coats of hp 5000. I used acrymax from preservation products.

Coat the entire metal roof surface with a rust inhibiting primer. One of my neighbors used an oil based paint as a primer since some of the metal was rusted and then covered the roof with one of the specially formulated roofing paints that is sold by calbar for use on old metal roofs for an added layer of protection. Painted metal roofs come with a baked on factory finish and you can re coat these as well as paint bare metal roofing with acrylic latex paint. Check with your homeowner s association for any painting regulations.

The first step in painting any metal roof is determining what substrate and existing coatings you are dealing with. Metal roofs should be coated painted with a specially roof formulated acrylic latex which bonds tightly to metal and becomes a flexible coating 15 20 mils thick. There are several different types of metals used in roofing applications. I used three coats.

Acrylic latex paint is a good choice for bare metal roofs and to go over old paint. Galvanized roofs require the use of a different paint than what is used on terne metal. You can also use oil based alkyd paint but. Some historical homes have terne metal roofs and these need to be.

Choose a color that goes with the. Choose a paint that s right for your metal roof. A topcoat doesn t eliminate the need for a good primer the topcoat seals your paint but the primer makes the paint adhere properly.