Best Waterproofing Materials for Roofs

March 30, 2021 5:39 am Published by Leave your thoughts

If you’re making repairs to your roof or installing one from scratch in New Bern, NC, you need to be sure that the roof is waterproofed correctly. This is arguably the most important step in the roof installation process. It protects the structure itself and the things you keep inside. Waterproofing a roof can take many different forms, since there are many different materials to choose from, each with their own benefits. Read on to learn more about the best waterproofing materials for roofs.


Polyurethane is often cited as one of the best waterproofing materials because it creates a seamless membrane for your roof. It can be applied to a roof and will fill all capillary cracks, creating a completely watertight seal. Only a trained roofing professional should apply this type of waterproofing, because it’s a dangerous material if it contacts skin or is inhaled.

Cementitious coating

One of the best waterproofing materials for structures in New Bern, NC is a cementitious coating. This waterproofing product is made of sand, organic and inorganic chemicals and silica-based substances. These ingredients are combined with lime to create a hydration reaction, forming a waterproof seal for your roof. It’s simple to apply to any structure, which is why it’s one of the most common ways of waterproofing a roof.

Rubberized asphalt

Rubberized asphalt can be used to waterproof the roof of a home or business. 790-11 hot rubberized asphalt in particular is a great option if you’re dealing with a vegetative or “green” roof or other forms of intensive roofing assemblies. In other words, this form of waterproofing is very tough and durable, and can easily withstand the elements of nature. It’s also a very flexible material, making it ideal for roofing assemblies of irregular sizes and shapes.

Bituminous membrane

Both commercial and residential buildings can benefit from bituminous waterproofing. Bitumen, which is essentially asphalt or coal tar, is combined with a mixture of sticky organic liquids to form this membrane, which is a very effective form of waterproofing for roofs. You’ll also find it as roll roofing materials and roofing felt. Since this product is made from crude oil, it’s not the most sustainable waterproofing option on the market. It also doesn’t do well in areas that see a lot of direct UV radiation and extreme temperatures. It’s very affordable, though, and holds up well in the right situations.

PVC membrane

PVC, or polyvinylchloride, is a very common material that’s used to waterproof roofs. It’s very water resistant and vapor permeable. It’s placed on top of a reinforcing base of glass fiber or polyester mesh for extra durability. As an added benefit, it’s one of the easiest waterproofing materials to install, and it requires little maintenance.

Whether you’re repairing a roof or installing a completely new one at your property in New Bern, NC, you need to be aware of the best waterproofing materials to protect the building and its contents. Contact Dallas Cherry Roofing today to learn more about the right way to waterproof a residential or commercial roof.

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