How the Sun Hurts Your Roof and Whether to Repair or Replace It

Many of us treat roofs as a set-it-and-forget-it type of solution. While that would be the cause, this doesn't mean you should forget about it forever. Roofs do not last forever, and sooner rather than later, they'll need to be inspected and maintained to ensure they perform as expected!

That said, one of the biggest threats to your roof's integrity is heat. The blazing summer sun can damage your roof in many ways, and today, we'll share with you the ways how it does so, along with knowing whether to repair or replace it:

How Sun Can Damage Your Roof

1. Thermal Expansions

During summer, the sun heats your roof's surface beyond its regular range of temperatures. The way your roof reacts to this is by expanding. As a result, the roof can start to crack and split, especially as the years go by.

So, if you notice that your roof shows signs of cracks and splits, get it repaired or replaced soon!

2. UV Rays

Unfortunately, heat is not the only problem. Ultraviolet rays from the sun can also damage your roof, considerably accelerating the aging process. As these rays break down the materials that make up your roof, a layer of dust and grime will cover it. This will then absorb more heat and give your home a warm feeling.

3. Humidity

Your roof is essentially a layer of heat-absorbing material, which makes it the perfect breeding ground for the growth of molds, mildew, and moisture. When left unattended, mold and mildew can infiltrate the other parts of your home, which can be very unhealthy and hazardous to your family's health.

4. Leaks and Rot

Eventually, all that moisture and condensation you see on your roof will make its way to your attic, where it will cause it to either leak or rot. Because your attic is the one storing your home's precious belongings, this can sometimes be a pretty serious matter!

Should You Repair Or Replace The Roof?

If you have a roof that has been exposed to extreme weather conditions, it's possible to repair it instead of going for a complete replacement. For instance, if your roof is showing wear and tear from the extreme heat conditions, repairing it can help extend its life significantly. 

On the other hand, if you find that the roof is so badly damaged that repairing it may not make sense, replacing it is also a good idea.

While the initial cost of repairing a roof may be less than that of replacing it, keep in mind that roof repairs will only keep you in the game for so long. Sooner or later, a replacement may be needed. Fortunately, if you do decide to replace the roof, you'll have to do much fewer repairs early on, helping you save money!


As you can see, the sun alone can cause so many problems to your roof, especially if it is already old and damaged. As such, we highly recommend that you hire professional inspectors to come and check your roof out. From their opinions, you can understand whether a repair or a replacement is your best option and take appropriate actions to ensure your home continues to be a safe and sound place to be!

Three Mountain Roofing offers roofing services to residential and business owners. If you are looking for the best roofers in Vermont to fix your roof and more, reach out to us today!

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