flat roof replacement

The Ultimate Guide to Flat Roof Replacement in Phoenix

In the scorching desert heat of Phoenix, Arizona, your flat roof endures relentless challenges.

Sweltering summers, monsoon rains, and unforgiving UV rays take a toll. Ignoring your roof’s needs is not an option.

If it’s time for a flat roof replacement, we’ll walk you through the process right here in this article.

We’ll also share some tips on choosing the best materials.

Read on to find out more about preparing to replace the flat roof on your Phoenix home.

Is It Time to Replace Your Flat Roof?

Flat roofs in the Phoenix, AZ, area have a tough job.

There are clear reasons to consider replacing them.

One of the most common reasons is weather damage.

The relentless sun and occasional monsoon rains can cause your roof to crack and deteriorate.

Plus, flat roofs don’t last forever, so age becomes a factor if you’re nearing the end of the roof’s service life.

The average roof lifespan of a flat roof is 20-25 years.

Not all roofs reach the end of their lifespan.

That’s why routine maintenance and inspections are important.

Postponing a roof replacement can lead to serious problems.

Water damage is one of the most immediate concerns.

Leaks can lead to mold, ceiling damage, and even structural issues.

Any of these issues can put a dent in your bank account if you need to make repairs.

Choose the Right Roofing Material

You might think that a flat roof doesn’t allow for many options when choosing roofing materials.

That’s not true because you can choose from several roof styles, including asphalt shingles, tile, metal, and even eco-friendly green roofs.

Selecting the appropriate roofing material goes a long way toward the longevity and energy efficiency of your flat roof.

Here are some options for materials suited for the climate here in Phoenix:

Built-Up Roofing (BUR)

Built-up roofing is a durable and time-tested choice.

It’s made by layering multiple plies of roofing felt and asphalt. BUR roofing holds up well under harsh sun and temperature extremes.

BUR is heavier than other options and may require extra structural support.

It’s also important to note that the installation process can be more labor-intensive.

Modified Bitumen

Modified bitumen roofing is durable, flexible, and relatively lightweight.

It’s well-suited for flat roofs in Phoenix, as it can withstand high temperatures and has excellent waterproofing properties.


Due to its outstanding insulation properties, foam roofing is an excellent choice for homes in hot climates.

Foam roofing can help reduce indoor cooling costs.

It’s seamless and waterproof, which is a plus during monsoon season.


PVC roofing is another smart choice for flat roofs.

This material features exceptional heat resistance, durability, and resistance to weathering. PVC is well-suited for the harsh desert climate.

Choosing the right roofing material is a key decision when replacing a flat roof.

Each material has its pros and cons, so it’s essential to weigh them carefully.

How to Prepare for Your Flat Roof Replacement

If you work with a professional roofing company, there’s not much you need to do to prepare for your roof replacement.

Your contractor will do most of the heavy lifting as far as planning goes.

Roofing contractors prepare for roof replacements by making sure they’ve secured the required permits.

Your contractor will bring the necessary paperwork and payment to the building department.

On the morning of your project, expect the roofing installers to remove old roofing and inspect the roof deck.

If you have solar panels these will need to be removed prior to any roof work. It’s ideal if your roofing company includes solar panel service that includes removal and replacement as part of their roof replacement service.

They may install insulation if needed.

In desert climates, there’s an additional consideration.

Working on a roof during peak temperatures can be challenging.

Many contractors prefer to plan roof replacements during the fall and winter months when the weather is milder.

The Flat Roof Replacement Process

Unless you plan to DIY, you won’t be directly involved with the roof replacement.

That doesn’t mean you shouldn’t know what to expect when the roofing installers arrive.

Another aspect to consider beyond the removal of old materials, etc., is drainage.

Proper drainage systems are vital for preventing water pooling, which can cause damage to the roof and its structure.

You should have an inspection of the roof drainage system.

Most homeowners wonder how long the replacement will take.

Depending on the size of the roof, the complexity of the replacement, and the weather, a full roof replacement can take between 1 and 3 days.

Your contractor should include a timeline in your estimate.

You’ll still want to keep extenuating circumstances like weather in mind when anticipating the completion of your project.

Post-Installation Maintenance and Tips

Maintaining your newly replaced flat roof is key to its long-term performance.

Regular inspections will catch most issues early.

For safety reasons, we don’t recommend you climb a ladder; you can often see the roof’s condition from ground level.

You should schedule an annual professional roof inspection.

Noting signs of wear, such as cracks or punctures, and addressing them promptly helps prevent more extensive damage.

What you can do between inspections is keep the roof clean and free from debris.

It helps to avoid clogs in the drainage system, which can lead to water pooling.

Regular inspections and cleaning can help extend the life of your roof.

During monsoon season and in extreme heat events, your roof may need a little extra attention.

Before the monsoon season hits, check your roof for any loose or damaged roofing materials and make sure drainage systems are clear.

Ensure your roof has adequate ventilation to release trapped heat and maintain the roofing material’s integrity.

By being proactive and maintaining your flat roof, you can protect your investment and enjoy a trouble-free roof for years to come.

Don’t Wait to Schedule Roofing Replacements or Repairs

Your roof plays a vital role in protecting your home.

If you’re considering a flat roof replacement, make sure to work with a trusted, reliable contractor who understands the nuances of roof replacements in a desert climate.

Experts at AZ Roofing Works have helped hundreds of Phoenix-area homeowners with their roofing needs.

We’re your partner in replacing and repairing your roof.

We’re happy to provide a free estimate.

Reach out today.

Your home’s protection is our top priority.

Looking for a Scottsdale roof installation contractor? AZ Roofing Works is ready to help you! Contact us today, either online or call our office directly, our friendly staff members are standing by at (602) 283-3383.