Painting Old Metal Roof

Terne is best painted with an oil based paint.

Painting old metal roof.

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. Some historical homes have terne metal roofs and these need to be. 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. Apply the primer with a roller using a paint brush to access.

I used three coats. A topcoat doesn t eliminate the need for a good primer the topcoat seals your paint but the primer makes the paint adhere properly. Acrylic latex paint is a good choice for bare metal roofs and to go over old paint. I used acrymax from preservation products.

Choose a product designed for use on outdoor metal applications. The first was their basic coating hp 1000 followed by two coats of hp 5000. There are several different types of metals used in roofing applications. You can also use oil based alkyd paint but.

Galvanized roofs require the use of a different paint than what is used on terne metal. 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. Oil based alkyd paint may also be used with an appropriate galvanized metal primer. Check with your homeowner s association for any painting regulations.

Choose a paint that s right for your metal roof. Some homeowner s associations have rules about. This is a huge factor in what coating system you ll want to use and is critical to determining how to prepare the existing surface.