Despite the intense heat, there’s lots to like about summertime in Phoenix, AZ. But even the best day of swimming at Burro Beach doesn’t change the fact that the extreme weather can have downsides, and your roof is a great example. In this guide, we’ll look at the realities of Phoenix roof heat damage, explain why our climate is especially hard on roofs, and offer suggestions on how to deal with it as a homeowner.
Why Phoenix Heat Is So Damaging to Roofing Systems
Considering the extremes of Arizona heat, roof damage is hardly a surprise. The surface of your roof can get as hot as 120ºF, which causes roofing materials to dry out and crack over time, almost as if they were in an oven. This heat also deteriorates other parts of the roof, causing roof underlayment damage that leaves your home susceptible to water intrusion during rainstorms.
How UV Exposure Breaks Down Roofing Materials
It isn’t just the Phoenix heat you need to worry about. UV levels in Arizona also get quite high, which can accelerate the breakdown of roofing materials of all kinds. Over time, UV exposure causes the molecules to deteriorate in your roof’s exterior, causing them to become dry, brittle, and faded. Roof damage from sun exposure will compromise your roof’s waterproof properties, lead to color fading, and generally force you to pay for extensive roof repairs or replacement prematurely.
Why Roof Underlayment Fails Faster in Arizona
Roof underlayment damage is another common issue in Phoenix. This membrane acts as secondary protection against any moisture that makes it past your roof tiles or shingles. But over time, it can get damaged by high heat and prolonged UV exposure, leading to punctures that allow water to enter your home.
How Extreme Heat Impacts Tile Roofs
Because of the harsh summer heat we experience in Phoenix, many homeowners opt to invest in highly durable tile roofs. But despite their impressive resistance to heat damage, these roofs can still face issues over the years of exposure to intense sunlight and summer heat. Examples of tile roof heat damage include:
- Tiles buckling, cracking, or popping out of place due to thermal expansion.
- Underlayment failures are causing water leaks on otherwise functional tile roofs.
- Loosening fasteners caused by thermal shock (such as during rainstorms after very hot days).
- Increased indoor heat and rising HVAC bills due to improper venting in the attic.
Though these issues can typically be resolved through tile roof repair, it depends on how prompt you are in getting them addressed. Delaying the necessary repairs will only worsen the issue, potentially forcing you to install a new roof prematurely.
Common Signs of Heat Damage on Arizona Roofs
Now that we understand a bit more about how heat affects roofs, how do you spot this issue in your own home? Here are a few signs of heat damage on an Arizona roof:
- Cracked, curling, buckled, or missing shingles or tiles
- Shingle granule loss (for asphalt shingles)
- Splitting shingles
- Bubbling membranes forcing roof tiles or shingles out of position
- Damage to flashing and sealants on the roof
- Rising air conditioning bills despite no change in usage
Why Roof Cracking and Expansion Occur in Phoenix
The principle behind a roof cracking from heat is known as thermal expansion. When materials like asphalt, clay, or concrete get very hot, they tend to expand in size slightly and then contract again at night when the temperatures cool down. This repeated expansion and contraction puts stress on the roofing material, and when combined with the drying effect of constant sunlight, the tile or shingle will begin to crack or move out of position. This is the main cause of shorter roof lifespans in Arizona.
How Monsoon Storms Worsen Existing Roof Damage
If your roof is already affected by the issues above, it means your home is left vulnerable the next time it rains. Damaged roof tiles or shingles allow water to pass through the roof’s exterior, and if there’s any damage to your underlayment, this water can get straight into your home, causing water stains, structural damage, or hazardous mold growth. Monsoons also tend to be accompanied by high winds, which can be strong enough to blow weakened or damaged roofing materials right off of your home, exacerbating the damage even more. This shows why proactive roof leak prevention in Phoenix is so vital.
The Impact of Heat on Roof Lifespan
Roof materials all have varying lifespans, but these are calculated under relatively optimal conditions, far from the punishing heat and intense UV radiation of Phoenix.
Asphalt shingles, for instance, can last up to 30 years normally, but rarely make it longer than 25 in Phoenix. And while tile roofs are well-suited to the harsh climate in Phoenix, the underlayment will likely fail first, meaning you’ll need Phoenix, AZ roof repair within 20 to 30 years, even if the tiles are still within their 50 to 100-year lifespan.
How Proper Ventilation Helps Protect Roofing Systems
One of the best ways to offset the negative effects of Phoenix’s climate on your roof is to look at your home’s ventilation system. This can have a surprisingly significant effect on your home’s roof. Proper ventilation helps expel unwanted moisture rather than sending it into your roof and underlayment, regulates temperatures, and helps reduce the thermal stress your roofing goes through. This can help extend the lifespan of your roof without having to do anything to the roofing itself.
Why Roof Inspections Matter in Arizona
Before you can get repairs for roof tile damage in Phoenix, a new tile roof, or any other roofing service, a professional needs to assess the condition and determine the next steps. In Phoenix, roofing inspections involve a comprehensive examination of the entire roofing system, looking at both the exterior and interior for any signs of water leaks, structural damage, or compromised tiles and shingles. From here, your pro can offer detailed roof maintenance instructions or let you know which repairs you’ll need to rejuvenate your roof.
Roof Maintenance Tips for Phoenix Homeowners
In Phoenix, AZ, roof maintenance is an absolute necessity to ensure the long-term protection of your home. Here are a few tips to get proactive about caring for roofing systems in hot climates:
- Get a roof inspection annually, ideally before monsoon season.
- Clear debris from your roof and clean gutters regularly.
- If you have a flat roof, make sure the coatings are maintained and reapplied every 5 to 10 years.
- Do visual checks on your roof periodically, looking for any damaged or missing shingles or tiles.
- Keep any mesquites, palms, or other trees trimmed back to avoid tree limbs falling on your roof.
How Different Roofing Materials Respond to Heat
As longtime Arizona roofing contractors, we’ve worked on roofs of all kinds. In that time, we’ve learned how various materials respond to the intense heat of a Phoenix summer. Here’s what you need to know:
- Metal: Metal roofs reflect most solar radiation and have low thermal mass, making them a great way to boost home efficiency and comfort in summer.
- Asphalt: Asphalt shingles absorb heat and hold it for a long time, greatly increasing the strain on your air conditioner. They’re very susceptible to damage from UV exposure as well, meaning you’ll likely need to repair the roof more often.
- Wood: Wood shingles can dry out and crack easily under the intense Phoenix sun, making them a less-than-ideal choice for the climate.
- Clay and concrete: Clay or concrete tiles are a great option in Phoenix, acting as a thermal barrier that protects your home from the worst of the summer heat.
- Slate: Slate tiles offer a unique look, but might not be the right choice in Phoenix because of their tendency to hold thermal energy for a long time. This might prevent your home from cooling down properly, even at night.
- Underlayment: Standard underlayment can have a significantly shorter lifespan in Phoenix’s climate. Many homeowners opt for alternatives, such as Sharkskin underlayment, which offers improved heat reflection.
Why Homeowners Choose Legacy Roofing
If you’ve been looking for a roofing team that’s as skilled as they are committed to your comfort, Legacy Roofing is here to help. Our team is made up of experienced, professional, and highly trained roofing experts, each of whom has the knowledge and tools to help you resolve any roofing trouble the right way. With transparent, instant quotes available and an emphasis on quality work and integrity, it’s no surprise that our Phoenix community chooses us time and time again for roofing services.
Schedule a Roof Inspection for Your Phoenix Home
No matter what roofing services you need, the solution begins with an inspection. Whether you’re thinking about replacing your roof, want detailed maintenance instructions to extend your roofing system’s lifespan, or need immediate repairs for a sudden problem, we’re here to help. Contact us today to schedule your initial consultation and start the process.
