Painting Old Metal Roof

You can also use oil based alkyd paint but.

Painting old metal roof.

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. Some historical homes have terne metal roofs and these need to be. Galvanized roofs require the use of a different paint than what is used on terne metal. Choose a paint that s right for your metal roof.

I used acrymax from preservation products. Terne is best painted with an oil based paint. 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. Choose a color that goes with the.

The first step in painting any metal roof is determining what substrate and existing coatings you are dealing with. Coat the entire metal roof surface with a rust inhibiting primer. I used three coats. Apply the primer with a roller using a paint brush to access.

There are several different types of metals used in roofing applications. 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. 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.

Oil based alkyd paint may also be used with an appropriate galvanized metal primer. Choose a product designed for use on outdoor metal applications. Check with your homeowner s association for any painting regulations.