Roof Sealant: When and Why You Should Use It

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brick roof sealant

When and Why You Should Use Roof Sealant

Roof sealant is the final coating on your roof, but not all roofs have it. Sealants serve an important purpose, and even if your roof isn't sealed, it's not too late to do it now. Flat roofs especially need sealant.

What Is Roof Sealant?

Roof sealant is a sealant that comes in different variations which gives your roof an extra protective layer from leaks and damage.

On homes that have flatter roofs, water can pool up and cause leaks. You can also use sealants on sloped roofs, where they'll still help with the prevention of leaks even though there's less chance of water pooling up in areas and causing leaks or damage.

A sealant can extend the life of your roof an extra ten years over its normal life. It's well worth the investment, even for an older roof that's still in good shape.

Many people think that a sealed roof also looks nicer, more manicured. Sealing can help with energy efficiency and increases the curb appeal when you put your home on the market. It gives your roof a newer look.

Types of Roof Sealant and its Uses

orange shingles on green house

Image Source: Pixabay via Pexels

There are different types of roof sealant available on the market. Each has different ingredients, giving them different properties. You need to choose the right one for the job, which can depend on how you want to apply it and what you want the finished product to look like.

There are sealants made from acrylic polymer, asphalt-based ones, silicone roof sealants, and polyurethane sealants, among others. Silicone and polyurethane a couple of the most popular options. Polyurethane is commonly used for patching roofs to stop existing leaks as well.

Use It to Stop Leaks

If your roof is appearing a little worse for wear, and especially if it has sprung a leak, you can use roof sealant to repair and stop the leak. By sealing an older roof, you give it a newer appearance.

There are roof sealants that can be sprayed on and others that you can brush on or put on with a roller. When you buy the sealant, you'll find directions on the container, which should include compatibility with certain roof types.

Use It to Refresh Your Roof or After Roof Replacement

roofer working on roof sealant

Image Source: Mario Ohibsky via Pixabay

Consider the fact that your roof is exposed to the elements 24/7. Rain isn't the only thing affecting your roof.

The sun beats down on your roof, wind storms loosen shingles, ice and snow reek havoc on it. Sealing your roof protects it from the elements. It helps keep your shingles where they belong. It keeps the rain out of the shingles, and out of your home.

Depending on the type you use, you may need to redo it over time because of shrinkage, but silicone and polyurethane are less likely to shrink.

Complete Benefits of Roof Sealant

Saving your roof from leaks isn't the only thing sealant can do for your home. Here are the other added benefits of using roof sealant

1. Prevention of Mold Growth

Roof coatings made from rubber don't hold moisture. This makes it less likely for molds and algae to grow on your roof. It stays drier and safe from this kind of damage.

2. Increased Resistance to Fire

While a house fire will still have the potential of destroying your home (you should always have working smoke detectors throughout your house), roof sealants can add extra resistance to fire, which could come in handy if lightning strikes your home.

3. Added UV Protection

There's no hiding your roof from the elements, and the sun is damaging on all things that it beats down on over an extended period. When you notice your shingles curling, it often has something to do with the damage being caused by the UV rays from the sun.

Some roof coatings can protect your roof, at least somewhat. It will cut down on the damage the sun causes.

4. Lower Cooling Costs

If you coat your roof with a sealant of a lighter color, it can deflect the heat. When your roof is absorbing more heat, it will be warmer inside your home as well. When heat is being deflected, you may find yourself spending less on your cooling bills in the summer.

How to Install Roof Sealant

This is where things get controversial. Professionals suggest that you don't do this yourself. Mistakes can be made, and leaks can happen. However, like with any home improvement projects, you can find instructions online that will walk you through sealing your roof, step by step.

If you fancy yourself a handy person, why not give sealing your roof a shot. Find a video that walks you step-by-step through the instructions and follows the directions on the container.

Is Your Roof Sealed?

clear glass window open from an attic

Photo by hermaion from Pexels

If you don't know the answer to this question, go outside and take a look at your roof. You'll be able to tell the difference between exposed shingles and a sealed roof. If yours isn't sealed, it's time to get it done.


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