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Waterproof Roof Coating: It’s time to start the preparation

Summer is over so it's time to start preparing for fall. Waiting for the first rains the thought of ponding water damaging our roof is not that pleasant! So it’s time to waterproof our roof in order to remain in good condition for many years to come and prevent any damage that rain can cause.

The key for waterproofing our roof is by using the right roof coating products and tools.


What is a roof coating?

roof coating is a monolithic, fully adhered, fluid applied roofing membrane. Many roof coatings are elastomeric, that is, they have elastic properties that allow them to stretch and return to their original shape without damage.

This membrane will protect your roof against climate conditions and other outdoor elements. Especially, will seal your roof, protecting it from moisture, ponding water, and ice, preventing leaks and further damages.

Marmoline 13kg Hybrid Membrane Aquata Seal Roof Coating



Roof coatings are seamless and when installed correctly, can solve roof leaks on almost any type of roofing material.

Field-applied reflective roof coatings can extend the useful life of nearly every roof substrate keeping a roof surface cool and providing a level of protection from the sun and weather.

Roof coatings can add 25 years to the service life of a roof and reduce the amount of discarded roofing materials that end up in landfills. The infrared image on the right shows 79 °C (174 °F) on the uncoated (black) section of the modified bitumen roof. The coated (white) section is 26 °C (79 °F). Field studies have shown that cool roof coatings can lower rooftop temperatures and reduce air conditioning bills.


What are the different types of roof coatings:

There are generally three types of roof coatings you can choose from when restoring your roofing system. These include silicone, elastomeric, and acrylic. A roof coating is a cost-effective option that beats out a full roof replacement for many building owners and residents.

When choosing a roof coating, you must understand the difference in each formula. You should do your research concerning your roof, location, slope, exposure to chemicals, heat, and UV rays.

 Here is a breakdown of strengths and weaknesses to determine which roof coating material is best for your current roofing system.

Kraft Total Proof PU Hybrid Damp Proof Paint White 10L

Acrylic Roof Coatings 

Roof coatings formulated with acrylic are a good option for clients in a broad range of climates. Acrylic is a water-based solution that matches most roofs. Its major strength is that it offers an incredible balance of cost and performance. Acrylic roof coatings are also highly reflective, UV-resistant, and easy to work with, making it a popular choice for many.

Unfortunately, acrylic loses thickness under the elements. Therefore, specialists at Unforgettable Coatings recommend acrylic roof coatings in drier climates with average temperatures of 50°F and above. However, the sun also degrades acrylics and speeds up the loss of thickness.

Knauf 12kg Hybrid Elastomeric Roof Coating

Elastomeric Roof Coatings

Elastomeric roof coatings can withstand a range of weather conditions because of their resilient formula. Elastomeric coatings are generally less expensive than other coating types. Though the reflectivity is great this formula is not UV stable for as long as silicone is. For this reason, our specialists usually use elastomeric for positively pitched roof systems or as a base coat.

Combining elastomeric with another coating will make it extremely durable. It will also stay cleaner and more resistant to water and humidity. However, elastomeric roof coatings can have a stronger odor compared to other formulas.

Budget 9L Acrylic Waterproof Roof Coating

Silicone Roof Coatings

A defining feature of silicone roof coatings is that they are moisture-cured. In some applications, the use of silicone can also eliminate the need for a primer. Since silicone formulas advance curing, silicone roof coatings will weather better than others with nearly no erosion issues. Our specialists typically recommend silicone roof coatings for homes and commercial buildings in wet locations.

However, silicone formulas hold on to dirt and dust, but rain and water can easily clean the roof system right up. Unfortunately, this can cause the roof to lose its reflectivity faster. It is also hard to adhere to silicone, so when a roof needs re-coating, you must re-coat with a compatible silicone.

Vivechrom Isotop 10L Hybrid PU Waterproof Roof Coating

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