By Dez Duran-Lamanilao
If you are planning to install or replace a roof, there are various types of roof surfaces that are available in the market, depending on your budget, design preferences and the environment where the property is located. Coating can also be applied so you can extend the life of your roof and reduce heat energy costs. A roofing system that features a coating designed based on the building’s key attributes will ensure long term assurance that your roof is protected from both natural and man-made elements in the best possible way.
Almost all types of roofs, including metal roofs, modified bitumen and single ply, can be coated. There are some though, such as ballasted and gravel surfaced membranes, that are not recommended to be coated without applying special treatments.
A Reflective Roof Coating, commonly referred to as white roof coatings, is mainly comprised of silicones, acrylics and urethanes, among others.
- Silicone Roof Coating. Silicone coated roofs are generally the most expensive choice in terms of material costs, but this makes up for the roof’s strong and UV resistant properties.
- Acrylic Roof Coating can tolerate stresses caused by external factors and water contact for longer periods of time. An acrylic elastomeric roof coating requires resistance to ponding water, flexibility at low temperature and reflectivity properties.
- Urethane Roof Coating is the ideal choice for almost all commercial roofing substrates. It is one of the most durable roof coatings available on the market, with its flexibility, superior adhesion and excellent UV protection. This type of coating, however, produces a strong odor, has a shorter shelf life and can sometimes be challenging to spray.
While solvent-based roof coatings can last longer, water-based roof coatings generally emit fewer odors and are less expensive. Note, however, that water-based coatings may run during rains before they have even dried. Thus, they should not be applied in colder weather.
Make sure that you get in touch with the right roofing experts when considering coating your roof. It will save you time, energy and money as compared to the possible rework if otherwise.