Galvanized metal roofs shed very easily than shingles or tiles and Galvanized metal roofs are very useful in places where leaf, accord, pine, and redwood needle buildup is a big problem. Metal roofs are popular since they don’t need much maintenance. Only an occasional cleaning and a fresh coat of paint can help the metal roof to last longer.
Painting Galvanized metal roof is very easy. You just need to make use of right kind of paint and primer to ensure the best results whether you plan to paint an old roof or a new one.
Surface Preparation is Important:
Surface preparation is really important no matter whether you are painting a new roof or an old one. For a new roof, you should allow it for 6 months prior to apply a fresh coat of paint. If you cannot wait, you can wash off the oils and other remnants from the surface with a mild acid such as vinegar. Whether you have a new roof to paint or an old one, you need to power wash the surface at a pressure of 2,500 pounds per square inch. Power washing is important since it helps to remove mold, mildew, and oils. It is time-saving and is considered a great way to scrapping off old paint with a paint scrapper. If you don’t want to use a power washer, scrub the galvanized roof with a solution of water and trisodium phosphate.
What Types of Paint to Use:
Typically, painted galvanized roofs come with a baked-on factory finish, and this is a surface that you can recoat. If you have a bare metal roof to paint, use acrylic latex paint for the best result. Oil-based alkyd paint is also a good option, but you need to first apply an undercoat of galvanized metal primer on the surface. Priming is important as well, and you should prime the metal surface with a good quality primer even if you add a topcoat of acrylic latex paint. The primer helps to inhibit rust and bonds better that paint. On the other hand, paints bond better to the primer that it do to the bare substrate.
How to Apply the Paint:
Use a paintbrush or a roller to paint galvanized roof. The paintbrush should be specifically made for corrugated metal. However, a paint sprayer does a more thorough job than painting with a brush since it allows you to minimize the amount of time spent of the paint job.
For the best result, you can contact the painters in Pinehurst since they offer a cost-effective paint job in a professional manner.