Home Improvement

RAYS ON ROOF: 5 Negative Effects of the Sun’s Heat on Your Roof

The sun’s heat, especially during summer, is surely even more striking and blinding! What’s more, it’s even more humid and hot! While many might love the warmth, many also do not because they get really sweaty, haggard and easily irritable. 

Definitely, there are both positive and negative reactions of people to the sun’s heat. Do you know that it’s the same case with roofs? Yes! 

In the list below, you will know how the sun’s heat negatively affects roofs.


1.  Thermal expansion

The harsh Ultraviolet rays of the sun that come in contact with the roof, causing an immense build up of heat, causes what you call thermal expansion. Depending on the material chosen for the roof, it will expand resulting in intense damage to the structural integrity of your roof.


2. Bleaching

This is more of an aesthetic problem than an architectural one. Darker roofs are more prone to bleaching causing their colors to fade away leaving your roof with an unsightly look.


3. Asphalt Damage

The asphalt coating of shingles is especially prone to the effects of radiation. This coating is unfortunately susceptible to the effects of the Ultraviolet rays of the sun. The asphalt will wear out leading to significant exposure of the shingles, making them deteriorate more quickly under the scorching heat of the sun.


4. Damage to Coating

Roof coatings like bitumen are especially weak to direct contact of the sun’s rays. The heat from the sun causes the coating to be fragile and greatly decreases the roof’s durability. Some portions can either crack or completely break off. With the damaged coating, the vulnerable roof will be further exposed from the elements, thus, decreasing its life span.


5. Warping and Being Malleable

If you see that a bit of the shingles on your roof are starting to bend upwards, it may be because of the extreme heat given off by the sun’s rays. Deteriorated shingles that are easily damaged by prolonged exposure to heat or sunshine can show these effects.




Certainly, while roofs can get pros from the sun rays, they can acquire cons too. Damages are the most common, so regular roof checking, mostly during hot seasons, is important. In that way, you will know what roof repairs to pay attention to. 

For soon-to-be house owners, before house construction, you can also decide on a roofing material or type that would be more ideal for hot atmospheres. With that, you can also lessen the stress and costs of roof problems and roof repairs to do. Be wiser and make your house roof a better cover for all!



Nicole Ann Pore is a writer, an events host and a voice over artist. Travel, health, shopping, lifestyle and business are among the many subjects she writes about. She also writes for Young & Co Roofing Manchester, an excellent roofing and cladding company in Greater Manchester. She graduated Cum Laude from De La Salle University Manila, Philippines with a Bachelor’s Degree in Communication Arts.


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