Choosing Roof Sealants for Your Building

You may have the most attractive roof in your area, but it will soon lose its splendor if you do not take good care of it. One of the many ways of caring for your roof is to cover it with a roof sealant. The main benefit of applying the sealant to your roof is that it prolongs its lifespan and prevents leakage. However, you have to choose the right roof sealant for your needs.

With so many brands out there, it is straightforward to make the wrong choice. This article discusses the different types of roof sealants available in the market and their benefits.

Common Types of Roof Sealants

Liquid Rubber Sealants

Liquid rubber roof sealants have shown to be strong and completely adherent to the surface. They are waterproof, vapor tight, gas-tight, and their roof protection is sustainable. They contain no VOCs and other toxic substances and are highly resistant to temperature fluctuations. Liquid rubber sealants offer high elasticity of up to 900 percent.

Polysulfide Roof Sealants

These roof sealants are naturally elastomeric and have unparalleled resistance to elements. Therefore, they will remain effective for many years, keeping your roof safe and resilient for decades. They also have a more extended curing period than other roof sealants. However, they are a bit expensive compared to other coatings and are generally suitable for primed surfaces.

Silicone Roofing Sealants

Silicone roofing sealants possess an array of formulations, including acetoxy-cure, which is quite affordable, and oxime-cure, which is more expensive. If you have a metal roof, you should use oxime-cure formulations because they offer better adhesion and are resistant to corrosion. However, oxime-cure formulations can’t resist discoloring after constant exposure to UV-rays. On the other hand, acetoxy-cure formulations can resist discoloration caused by UV-rays but can’t resist corrosion. Generally, silicone roof sealants can’t be used in areas with substrates that produce heat and oil because they can quickly weaken adhesion.

Polyether Roof Sealants

Compared to other roof sealants, polyether coatings are more resilient and moisture-cure. Besides, they have better adhesion and can be used in cold weather conditions without destroying their grip and resilience. These roof sealants are easy to apply and fast to cure. If adequately applied, polyether roof sealants can last for more than 30 years.

Polyurethane Roof Sealants

These sealants are solvent-based. They are available in two forms: aliphatic and aromatic. Aliphatic sealants are more resistant to UV-rays than aromatic. But both of them are highly resistant to abrasion. So, they are perfect for areas that experience hailstorms.