Replacing a roof can be a difficult, expensive, and time consuming process. Metal roofs provide an economical solution since they are more durable than traditional shingled roofs and can be repaired fairly easily. Leaking metal roofs can be coated with a sealant that will stop the leak and prevent future drips.
One disadvantage to metal roofs is the fact that they expand and contract with the changing temperatures. Metal expands during extreme cold temperatures and retracts during the warmer temperatures. In addition, the holes around the roofing nails tend to change in size and often become the source of leaks for metal roofs. The best coatings for metal roofs need to be able to work for the continual expansion and contraction of the roof.
Elasomerics are one of the most effective coatings for metal roofs. They are coatings characterized as a liquid rubber. The liquid rubber can be spread out over a metal roof and provide an effective sealant, while at the same time protecting the surface of the roof from environmental elements. It allows for the expansion and contraction of the metal roof, while providing a buffer against falling objects, such as hail.
Reflective asphalt is another reliable covering for a metal roof also used to repair a leaky roof. However, asphalt works best if you are going to cover the entire roof. Reflective asphalt deflects the sun’s rays, keeping the home from heating up quickly. It also provides an effective seal and protective coating in the same way the elasomerics coatings do.
Latex and Polyurethane
Latex and polyurethane are also used to repair a leaky roof. Polyurethane is used more often when industrial oils or chemicals are present. Latex is not as durable as asphalt or elasomerics but it provides the added benefit of being pigmented to change the color of the roof, if desired.