Choosing and Applying Tin Roof Coating

When you need to apply coating to your tin roof, you need to know which product is best for your needs and how to apply. Most tin coating will help maintain your roof and keep it from rusting and becoming worn out by the elements.

Choose the Coating – Elastomeric Coating

Tin roof coating will provide resistance to natural corrosion and weather by protecting the steel from air and water. Though the product is very durable in protection, it can wear a way over time, so you must occasionally reapply—at least every other year in harsher climates and every 5 to 10 years in gentler climates. This will prevent water and air from reaching the steel and causing rust. 

Even if your roof currently has erosion and rust on it, you can still potentially fix the damage by applying the elastometric coating. The coat is made with a type of acrylic that makes sure that there are no cracks or errors in the application of the coat, making a seamless finish.

If you have spaces on your roof with extreme corrosion or tar patches, you can add a reinforcing polyester fabric to the elastomeric coating. Several common colors are available so that you have the option of choosing the color of your roof.

Purchase Your Coating

When you purchase the product, make sure that you get enough to cover your roof twice. Check to see if there are any warranties available with the coating. Also make sure you find out the estimated amount of time the coating will last in your climate and conditions. Make sure that you get a quality coating to ensure that it fully protects your roof.

Clean Your Roof

Before you begin the process of coating your roof, you must make sure that you have enough daylight hours during the day to complete the job. Check the weather report to ensure that there will be no harsh conditions while you are working.

Thoroughly clean your roof with a broom or brush. Once all debris is removed, use sandpaper or a putty knife to scrape off any remaining residue of the old coating of your roof. Check for any visible leaks while you are on the roof, and get rid of the buildup of mildew in cracks, vents and seams.

Use a pressure washer to wash away any other dust or dirt still on the roof. This will also allow you to see where the water goes and if there are any water buildup areas that you need to fix. After you have sprayed the roof, let the surface completely dry, and then cover the problem water areas with a primer. This process will help ensure that the new coating will stay on tight and not be damaged by anything underneath the coating.

Apply the Coating

After your roof and the primer are completely dry, you may apply the roof coating. Applying the product is as easy as painting your roof. Make sure you look at the directions on your coating container, as methods could vary.

Apply a thin layer evenly over small sections of your roof with a soft roof-rolling brush. You may want to purchase a long-handled brush for your comfort and protection. You will move from section to section of your roof from one end to another. Make sure that the coating is even and that you do not overcoat or undercoat any of the sections.

After you are completed with the first coat, let it dry for 4 to 6 hours before you apply your last coat. This will ensure that the coating is strong and secure and will protect your roof for years.