Paintimg Old Metal Roof

To prep metal for paint adhesion you must first clean it with soap and water remove light rust with a wire brush sand it with fine grain sandpaper and then in most cases prime.

Paintimg old metal roof.

Choose a product designed for use on outdoor metal applications. Painted metal roofs come with a baked on factory finish and you can re coat these as well. The roof should be swept clean of debris every few weeks to prevent small pests from finding a home in leaves dead branches or long lost golf balls. There are several different types of metals used in roofing applications.

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. How to paint a galvanized metal roof with sherwin williams roof preparation. We have stunning colors that actually look like real patina d metal. There is no other company in the industry that has an equal color selection or authenticity of paint prints.

The first was their basic coating hp 1000 followed by two coats of hp 5000. Welcome to painted rusted roofing western states metal roofing is the leader in painted metal roofing products that look old and weathered. Oil based alkyd paint may also be used with an appropriate galvanized metal primer. Remove patches of rust if you find them.

Coat the entire metal roof surface with a rust inhibiting primer. A topcoat doesn t eliminate the need for a good primer the topcoat seals your paint but the primer makes the paint adhere properly. Type of paint to use. 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.

As you scrape away old paint you ll get a close look at your entire roof. I used acrymax from preservation products. Galvanized roofs require the use of a different paint than what is used on terne metal. Press the scraper or knife firmly against the paint.

Acrylic latex paint is a good choice for bare metal roofs and to go over old paint. 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. Apply the primer with a roller using a paint brush to access. Terne is best painted with an oil based paint.

In fact even after painting a metal roof it is necessary to perform a cleanup washing down the roof with a mixture of bleach liquid detergents and water at least once every six months. The first step in painting any metal roof is determining what substrate and existing coatings you are dealing with. Removing the old paint 1. I used three coats.