Galvanized Steel Roofs

A galvanized steel roof  has a number of advantages over other roofing options, although there are some disadvantages as well. To determine whether you should consider a galvanized steel roof for your home or business, learn more about this type of roofing material.

“Galvanized steel is a popular metal roofing materials. This is due to the fact that it is strong, resistant to corrosion, durable and long lasting. It can withstand extreme weather conditions and can be finished in a variety of colors.”

Basics Of A Galvanized Steel Roof

Galvanized steel is an attractive metal roofing option from a cost perspective, due to the fact that galvanized steel costs less than stainless steel. The very same reasons that cars are manufactured from galvanized steel – strength, durability and cost – make a galvanized steel roof a worthwhile option to consider.

Galvanized Steel Roof Cost

There are wide variations in galvanized steel roofing prices. Pricing will depend on factors such as whether you are using galvanized steel roofing shingles or standing seam roofing, the total square footage of the roof, the quality, thickness and weight of the steel, whether the steel roofing is pre-finished or not, and how many extra accessories you need to complete the roofing project. As a very general estimate, you can expect to pay anywhere from $250 – $750 per square or more for just the roofing material. This does not include labor costs.

Advantages Of A Galvanized Steel Roof

Probably the biggest advantage to using galvanized steel roofing on your home or business is its strength and durability. It is strong enough to hold up under almost any type of weather conditions and a galvanized steel roof can last a very long time. In fact, you can expect a roof made out of galvanized steel to last longer than one made from just about any other type of material. When it is time to replace galvanized steel roofs, the steel is recyclable – another worthwhile benefit to considering this roofing material! This type of roof can also be finished in a variety of different colors, offering a wide selection of design options.

Disadvantages A Galvanized Steel Roof

No matter what type of roofing material you choose, you will have to consider some disadvantages. There are two main disadvantages to this type of roofing. The first is that a galvanized steel roof can be heavier than other types of roofs, and even heavier than other types of metal roofs. This can cause a problem with some types of structures, but it is typically not an issue on most homes and buildings. The second disadvantage is that galvanized steel can rust if left untreated. Although this can be a problem if it happens, most roofing made from galvanized steel is first coated with zinc and then sealed to prevent corrosion from occurring. Painting also prevents corrosion and rust, and is recommended with this type of roof.

How To Prevent Rusting

As mentioned, a galvanized steel roof is typically coated in zinc and then sealed to prevent rust and corrosion from occurring. Some galvanized steel roofing is also sold pre-painted, but if not, painting is highly recommended. A good paint job will not only make the roof look more attractive, but will further prevent rust and corrosion as well.
What To Do If It Rusts
If despite coating and painting your roof, you still see signs of rusting, you should address the problem right away. The longer you let it go, the more rust that will form – causing the roof to be an eyesore and also diminishing the roof’s strength. To remove rust from a  galvanized steel roof, mix 1 pound of oxalic acid per 1 gallon of water and spray the solution onto the rusted area using a hose. Once the rust has been treated with the solution, scrape off any loose rust, repair any damaged areas, and paint the steel to protect it from further rusting.

How To Paint

When painting a galvanized steel roof, the first thing you want to do is to make sure it is clean, smooth, free from rust, and dry. Carefully clean the roof using cleaners made to clean steel. A power washer is also a good idea. A roof brush will help to remove caked on dirt, chipping paint and rust. Repair any damage. Then use a quality exterior primer that is applied using a spray painter or rollers. Once that is dry, apply a minimum of two coats of an exterior paint (make sure it will work on steel), allowing each coat to dry thoroughly. A clear sealer can also be applied for added protection, if desired.