Adhesion is critical when applying roof coatings to your existing roof membrane. Without proper adhesion, the coating system will not work correctly and could cause leaks or damage to the roof substrate and building below.
This article will cover what adhesion is and what factors contribute to the proper adhesion of roof coatings.
What Is Adhesion When Applying Elastomeric Roof Coatings?
Adhesion is the force that keeps two surfaces bonded together. The surface must be clean, dry, and free of contaminants for roof coatings to adhere correctly to an existing roof membrane.
Any dirt, debris, or other contaminants on the surface will prevent the coating from bonding correctly and could cause the coating to fail prematurely.
Many factors can affect roof coating adhesion, so it is essential to follow the manufacturer’s instructions carefully and test the coating on a small area before applying it to the entire roof.
Factors to a Proper Adhesion for Elastomeric Coatings
Compatible Coating
There are many elastomeric roof coatings designed to be applied over different materials. There are some for asphalt, BURs, Mod Bit, and Capsheet roofs; others Single-Ply Membranes – TPOs, EPDMs, Hypalons, and PVCs; others SPFs, metals, and concrete substrates. Each coating contains a unique formula that provides maximum adhesion to its specific substrate.
For example, Single-Ply membranes are often more challenging to adhere to because they break down physically and leave a residue. Therefore, most roof coatings need a caustic primer or etching rinse before an elastomeric coating can be applied. Although this takes extra money and time, it allows for better adhesion.
The AcryShield A502 elastomeric roof coating from Everlast Coatings is an easy solution for Single-Ply. This product doesn’t require a primer or etching rinse, allowing it to directly and firmly adhere to the membrane. Finding a roof coating that works with your particular roof membrane while also being affordable and fast is essential.
The Surface of the Existing Roof Membrane
The rough surface texture gives the coating more area to grab and adhere to the substrate. The contact between the coating and substrate can be improved with a slightly rougher surface as the coatings are sprayed over the roof, filling in any gaps or depressions in the membrane.
This provides extra stability for adhesion. However, if the texture is too harsh, it will create air pockets between the coating and the roof. Therefore, before beginning any application of the silicone roof coating, pressure washing and cleaning the substrate are vital to ensuring that no dirt or film could prevent the coating from directly adhering.
Additionally, double-check for areas on the existing roof that are not 100% adherent – these must be removed before applying the roof coating system or other elastomeric coatings, as they can cause air pockets and defects.
Cohesion
Lastly, we will discuss cohesion – the term for a coating’s ability to hold together and remain durable. Weather conditions, thicknesses, and cure times can all affect cohesion adversely or positively. To achieve perfect cohesion in your product, follow the manufacturer’s recommendations closely, as each has different requirements.
Cohesions will differ for every roofing system, like flat roofs, metal roofs, and more. So it is essential to ask your manufacturer what they recommend. For example, the AcryShield A502 elastomeric roof coating from Everlast Coatings has an excellent cohesion rating and can withstand extreme weather conditions without breaking down or losing its shape.
The Benefits of a Silicone Roof Coating
Energy Efficiency
Elastomeric roof coatings have recently gained popularity due to their many benefits, including energy efficiency. An elastomeric roof coating is a seamless, waterproof membrane applied to a roof to protect it from the elements.
One of the main benefits of elastomeric roof coatings is that they can help to improve energy efficiency. By reflecting sunlight, elastomeric roof coatings can help to reduce the amount of heat transferred into a building. This can lead to lower energy costs and reduced wear and tear on cooling systems.
In addition, an elastomeric roof coating can also help to reduce noise pollution by absorbing sound waves. As a result, elastomeric roof coatings can provide numerous benefits, including energy efficiency, thus letting you save on your energy bills.
Waterproof
Elastomeric roof coatings have a lot of benefits, but one of the best in their resistance to standing water. This is because elastomeric coatings are waterproof and provide a seamless barrier that ponding water can’t penetrate. This is important because standing water is one of the leading causes of roof leaks.
When your roof is protected from standing water, you can rest assured that your home is better protected from the elements. An elastomeric roof coating is an excellent investment for any home, and it can help you keep your home in top condition for years to come.
Impact Resistance
An elastomeric roof coating is a type of protective coating commonly used on commercial and industrial rooftops. It is known for its elastomeric properties, allowing it to stretch and rebound without cracking or breaking. This makes it an ideal choice for roofs that are subjected to impact from hail, wind-blown debris, or other objects.
In addition, an elastomeric roof coating is also highly resistant to weathering. As a result, it can help extend a roof’s life by protecting it from the sun’s ultraviolet rays, wind, and rain. They are also low maintenance, needing only reapplied every few years to maintain their effectiveness.
For these reasons, an elastomeric roof coating is an excellent choice for any business or facility that needs reliable protection against the elements.
Let Us Help You
If you need to install an elastomeric roof coating, then Everlast Coatings can provide you with a high-quality product that will adhere well and provide long-lasting protection. We can also provide you with the necessary tools and equipment to ensure a successful application.
Aside from that, we can also do a one-time site visit to assess your roof and recommend the best course of action. Contact us today to learn more about our services!