2420 N 3rd St. Suite B Flagstaff, AZ 86004 – Facebook | Houzz

You have a busy schedule, so the thought of dozens of contractors on your property and loud construction noises on top of what you already juggle may feel overwhelming. Luckily, the roof replacement process doesn’t usually take as long as many homeowners realize. So how long does it take to replace a roof?

Below, our experts at Polaris Roofing Systems discuss the time it takes to replace a roof—and all the factors affecting this estimate. We serve clients in and around Flagstaff, Arizona, so call us today at (928) 699-4840 to begin your roof replacement project with Polaris Roofing Systems.

Roof Replacement Time Factors

how long does it take to replace a roof

Many factors affect how long your project will take. We explain some of the complications below to help you understand how your project might compare to the average roof replacement.


Roof replacements must happen during dry, mild days. Poor weather during a replacement will usually decrease the lifespan of your roof and causes many expensive issues in the future. Your roofing company will likely inform you that they can’t install the new system during rain, snow, hail, or extreme temperatures (hot or cold).

Roof Size

large roof replacement apartment building

Larger roofs take more time to replace than smaller ones. If your home requires double the shingles of a smaller one, it will take double the time to lay all those materials down. With larger projects, our team usually comes prepared with a bigger crew so that we can still complete the project promptly.

Design Complexity

Imagine a child’s drawing with a perfectly triangular roof. Now, picture the top of a castle with dozens of sides, unique angles, curves, and crenellations. The latter would require far more time because of the added complexity, material requirements, code adherence rules, and more.

For example, we must install flashing around various structures to divert water from your roof. The more seams your roof has, the more flashing we must install.

Aside from the actual design, the slope of your roof will also affect the timeline. Steep roof pitches are challenging to walk on, so our team must use extra safety devices and caution when building such a roof, which increases the total time.


When considering, “How long does it take to replace a roof?” keep in mind that we need to receive the materials before we can start. More popular roofing materials typically arrive faster than less common ones, like synthetic slate. Average material delivery times are as follows:

  • Asphalt: Between one and three days
  • Wooden shingles: Between six and eight days
  • Slate: Six days to one week
  • Concrete tiles: Eight or nine days

(Keep in mind, since Covid – roofing material supply delivery times are extended by several weeks to months in some cases)


Roof replacements require a lot of equipment. If your home has close neighbors in a busy city or dense vegetation surrounding the perimeter, your contractors may struggle to access the roof. Poor accessibility increases the time it takes roofers to complete each task.


During a roof replacement, we will first remove your existing roof and examine its structural condition. If the roof framing or underlayment has any issues, we’ll need to rebuild and replace them. The added step will increase your timeframe.

Average Roof Replacement Times

Average Roof Replacement Times

The average roof replacement takes one to three days. A simple 3,000-square-foot roof with great accessibility, decent weather conditions, asphalt shingles, and zero existing damages may only take a day. You should expect more complex projects to take 12 days or longer.

We can provide a more exact timeline estimate during your initial assessment so that you’ll know what to prepare for.

Speed Isn’t Everything

While you may want the construction process to end as soon as possible, remember that speed isn’t everything. For example, if your contractor decided not to work in the rain, that’s a sign that your roof is in good hands.

Roofs are expensive investments that should last many years, so you don’t want to compromise the quality of your project by hiring someone who will rush through the critical steps.

Schedule Your Flagstaff Roof Replacement Today

At Polaris Roofing Systems, we can replace your roof quickly while providing the highest quality results. If you’re wondering, “How long does it take to replace a roof?” we can examine your project to provide an exact estimate.

Contact us online or call us at Polaris Roofing Systems in Flagstaff, AZ, at (928) 699-4840 to schedule a free assessment.

Justin Young

Justin Young

Justin young has been in the construction trade for nearly 25 years, focusing on insurance restoration and roofing. While attending Arizona State he worked in new construction custom homes until the opportunity came to get back into restoration and roofing. Roofing came full circle and Justin was promoted to General Manager of a local roofing company. As that progressed he ventured out on his own to start his own company, Polaris Roofing Systems. He prides himself on being on the cutting edge of roofing materials, applications and roof quality. Justin enjoys spending time with his 2 young children and wife. Justin prides himself, his company and continued growth on the people around him and the integrity for which it stands for.

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