If your commercial metal roofing system is coated with rust or looks old and unattractive, contact a contractor and have it painted to improve its appearance. Keeping your clients happy doesn't always involve meeting strict deadlines or providing awesome products and services. Sometimes, clients judge companies on how their buildings look inside and out. Here are three steps contractors may take when they paint your metal roof.
Remove Rust From the Roof
Although metal roofing systems are some of the strongest and most reliable systems available today, they can rust over time when exposed to heavy snow, rain and ice. Painting your roof adds a layer of protection you need against these powerful natural elements.
Rust develops when air, water and other elements mix together and create a chemical reaction. Rust can develop in one place and spread or oxidize to other areas on the roof if the contractors don't remove it before applying the paint.
The contractors can use special chemicals to remove the rust, or you can hire a roofing contractor to replace the damaged metal panels before the contractors paint it. However, you need to consider several things before you make a decision about this step.
If you allow the painters to remove the rust with chemicals, it may be more cost-effective for you in the long run. The painting contractors don't need to remove the panels from the roof to do the job.
But if you hire a roofing contractor to replace the rusted panels, they may need to remove more panels than necessary in order to install the new panels properly. In addition, most metal roofing systems use strong bolts to install and connect them together on foundations.
Removing just a few panels may damage the foundation beneath them and panels connected to them. It'll cost more to repair the damage to the roof if these problems occur. In this case, having the painting contractor remove the rust chemically is the best option for you.
Prime and Paint the Roof
After the contractors remove the rust, they begin the painting process. The first step of the process takes some time to do because your contractors need to apply primer to the roof. Primer helps the paint adhere better to the metal roof, as well as protect it from peeling, water damage and rust.
The type of primer your contractors use may depend on several factors, including the type of metal roofing system you have and the weather conditions in your area. For example, if you have a traditional or regular steel roofing system installed over your building, the contractors may use primer with rust-inhibitor properties.
Untreated steel roofs can rust faster than treated materials, such as stainless steel or steel made with nickel, zinc and copper, when exposed to moisture and other problems. Placing primer on the roof may increase its lifetime because it reduces the presence of rust.
Placing a base coat over the primer helps seal out moisture on the roof. Because base coat is thick, it provides a smoother surface for the paint to adhere to after the contractors apply it.
Once the primer and base coat dry, the contractors paint your metal roof. At this stage, you want to choose a color that protects your building from heat and other weather problems.
Although steel roofs protect buildings from heat loss in the winter and cold loss in the summer, they can lose these benefits if you use the wrong paint. Darker colors, such as black and dark blues may attract or absorb heat faster than lighter colors, such a beige, white and yellow. So keep this in mind when you select your paint.
To learn more about painting your metal roof, contact your contractors today.