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Putting a new roof on a residential or commercial property is a big investment. When you spend a lot of money on a new roof, you want the roofing materials to last as long as possible. Fortunately, there are several types of protective roof coatings on the market. Whether you have a metal roof or a roof made of asphalt shingles, elastomeric roof coating can extend the lifespan of your roof and save you a lot of money.
Repair vs. Replace
If your roof sustains minor damage, it is more cost-effective to repair the damage with a protective coating than it is to remove the damaged materials and replace them with new ones. Elastomeric roof coatings are ideal for emergency repairs when a roof develops a leak due to old age or exposure to inclement weather.
In some cases, elastomeric coatings work so well that property owners are able to put off replacing their roofs for several years. Whether you are able to avoid replacing your roof depends on the extent of the damage, but using elastomeric coating can buy you some time to plan for your new roof.
Types of Elastomeric Coatings
Elastomeric roof coatings are classified as either solvent-based or water-based. The best type of coating for your roof depends on what type of roof you have. Some coatings are more suitable for low-slope or flat roofs than they are for roofs with steep pitches.
Elastomeric coatings made with silicone are ideal for use in damp areas. This type of coating prevents mold and mildew growth, protecting the integrity of your roof and preventing dry rot. Silicone coatings may also be used as a top coat for other types of elastomeric coatings.
Butyl elastomeric coatings are ideal for fixing metal roofs that have developed rust. These solvent-based coatings are also used to protect the polyurethane foam used in cold-storage buildings.
In some cases, it is difficult to get a protective coating to adhere to a roofing material. This applies to EPDM and PVC, among other types of materials. If you have a roof made of one of these materials, a polyurethane elastomeric coating is the best choice.
One of the most affordable elastomeric coatings is the acrylic coating. Acrylic coatings are very inexpensive and easy to apply, making them an ideal choice for many roofs. This type of coating is best for roofs that do not have a problem with standing water.
How to Apply Elastomeric Roof Coatings
Following a few simple steps while applying an elastomeric coating helps ensure good results. Using the right products and techniques extends the life of the coating, making it possible to protect your roof against leaks for several years.
Once you choose a coating that makes sense for your roof specifications, clean the roof thoroughly. Some people use trisodium phosphate (TSP), but it is a lot easier if you use a power washer. Be sure to remove as much dirt and debris as possible. Allow the roof to dry thoroughly before moving to the next step. Once the roof dries, make any necessary repairs, such as removing damaged roofing materials or sealing the seams of the roof.
Now you’re ready to apply the elastomeric coating. You need to apply a primer and then a topcoat that resists dirt and debris. One gallon of primer covers approximately 120 square feet of roof, while one gallon of the topcoat covers approximately 100 square feet. Be sure to coat the roof evenly, taking special care when working with the seams and flashing.
After you apply the elastomeric coating, inspect the roof for any areas you might have missed. If the coating looks thin, add more topcoat until the entire roof has been covered evenly. It takes about 48 hours for an elastomeric coating to dry completely.
Hiring a Professional
Elastomeric coating can protect your roof from costly damage and ensure water does not leak into your home. If you don’t have any experience working on roofs, it is best to have a professional select and apply the coating for you.
An experienced roofer can explain the pros and cons of different elastomeric coatings to help you choose the best one for your roof. Once you choose a coating, a roofer can also ensure it is applied correctly, saving you time and helping you avoid expensive repairs in the future.
Contact a professional roofing company now to learn more about durable roofing coatings.