The roof is the most vulnerable part of a building, as it is always in direct contact with harsh environmental forces. Continuous exposure to dynamic climatic conditions renders the roofing system weak, making it more susceptible to damages that, if ignored, may lead to leakages and other serious problems. In fact, if you live in a rain-blessed area, your property is even more vulnerable to roof leakages. To ensure optimum longevity of your , you need to ensure all possible preventive measures are in place, which brings us to waterproof roof coatings. Let’s take a closer look at the finer lines.
Under the Shingles Waterproofing
Waterproofing under your roof shingles is probably the most sought solution to make a roof waterproof. Many people often think that shingles is the only waterproofing needed, but to get the most out of roofing system, it is important to have a waterproof roof coating layered – either beneath the shingles or over the flat roofs surface. Waterproofing under shingles can be done by using tar paper, roofing felt, or Thermoplastic Polyolefin. These materials are usually rolled out underneath the shingles and add an extra layer of protection against water that might otherwise seep through nail holes or cracks that develop in shingles, over a period of time.
Over the Roof Waterproofing
If your roof is not waterproof and you think it would be premature for a replacement, there are many over the roof waterproofing options. The most common are solvent and water-based compounds that are easy to apply and spread over roofs – the same way paint is sprayed on walls. Roof coatings form a barrier between shingles or any other standard roof surfaces and the rainfall, enhancing the life of the roof. When making your pick, it is important to remember that solvent based compounds typically last longer than water based compounds; however, for specific climatic conditions, water-based compounds are a better choice. Here are some types of solvent and water based coatings that will help you guide your search to the right option.
Silicone Roof Coating
Silicone coating is one among the most widely used available in both solvent and nonsolvent varieties. Silicone coating is especially used to cover and protect spray polyurethane foam (SPF) roofs due to coating permeability. As silicone can resist water even hours after applying it, they are widely used in areas that receive frequent rainfall such as Florida and the Southern half of the Midwest. The downside, however, is that it picks up dirt quickly, because of which it is not advisable for areas where aesthetics are required. In addition, not silicone coat is not suitable for roofs that face high traffic.
Acrylic Roof Coating
Acrylic coating, a staple in southwestern and western states of America, is one of the most cost-effective waterproof coating options used in commercial buildings. It is highly reflective, and therefore, keeps the roof cool in sun-blessed areas. Elastomeric property of the acrylic makes the coating resistant to changing temperatures without damaging the actual roof coating. In short, acrylic coating helps in minimizing cooling cost at a more economical rate, while at the same time enhancing the life expectancy of your roof by protecting it from UV exposure. The downside is that acrylic coating doesn’t have high tensile strength, and therefore, is vulnerable to wear and tear. In addition, do note that acrylic coating must not be applied during winter and monsoon seasons.
Polyurethane coating, a solvent based coating, is offers exceptional resistance to a variety of conditions. The high tensile strength of Urethanes allows the coating to resist expansion and contraction during temperatures changes. This can be highly beneficial in high stress areas, or on wall flashings that are exposed to severe abuse. As far as the options are concerned, there are two types of urethane coating: aromatic and aliphatic urethane formulations. Aromatic urethane coating turns yellow after a while, due to continuous exposure to UV rays, compromising the aesthetics of the building. Aliphatic urethane, on the other hand, will not degrade in UV light, thereby maintaining the property’s appeal.
The Bottom Line
Waterproof roof coating not only protects your property’s roofing system from changes in weather conditions, but also prevents potential leaks, thereby enhancing its overall lifespan. It is, however, important to get the waterproof roof coating done by a professional roofing contractor that can not only deliver high quality work, but also help you choose the best coating option based on the dynamics at play. Should you wish to learn more about waterproof roof coating, feel free to connect with one of our representatives for a no-obligation consultation. Or, request a free estimate today!