How Long Does It Take to Replace a Roof on Average?

House with new roof

We know it might be rude to ask about age, but do you know how old your roof is?

Depending on the materials it’s made from, an average roof can last between 20 and 50 years. Some factors may adversely affect this average lifespan.

But how do you know when it’s time to replace your roof? How long does it take to replace a roof? Continue reading to learn the answers to these questions and many more.

Why Should You Replace Your Roof?

Although many homeowners don’t think about it, all roofs require replacement at some point. The older a roof gets, the more likely it is that water and other things (like bugs) will get into your attic. From the attic, water damage and bug infestations can spread to the rest of your home.

How often your roof needs replacement depends on varying factors. The best way to determine whether your roof needs replacement is through an inspection by yourself or a professional.

If you plan on doing the visual inspection yourself, look for the following:

  • Portions of roof sagging
  • Sunlight filtering into the attic
  • Shingles that are covered with algae, moss, or any mold-type substance
  • Shingles that are cracked, missing, curling, or split


You’ll want to check your roof at least once a year. Besides an annual check, roofs need inspection after every major storm. Storms like hurricanes, tornadoes, and blizzards can cause significant damage to your roof.

How Long Does It Take to Replace a Roof on Average?

There isn’t a one-size-fits-all answer when it comes to determining the length of time it’ll take professionals to replace your roof. The average project time can range from one day to two weeks. Many factors determine replacement time.

Factors Determining Replacement Time

A variety of factors need to be taken into consideration when determining roof replacement time. The primary concerns are looked at below.


If the roofing is being replaced during cold weather, additional steps are necessary. These extra steps require additional time. It’s also highly recommended not to replace roofing during rain or snow, so these weather phenomena can prolong the duration of the project.

Roofing Materials and Design

Shingles come in different materials. Each material requires a different method and time frame for replacement. The most common shingle types and their average replacement times are:

  • Asphalt Shingles – one to two days
  • Wooden Shingles – three to four days
  • Slate Tiles – six to seven days
  • Concrete Tiles – eight to nine days

The design you want the shingles laid in will also affect how long it takes to replace your roof. Designs that are complex or intricate will require longer than a traditional horizontal formation.

Total House Size

The larger your home, the longer it will take to replace your roof. Replacing the roof of a small one-room cabin will be significantly faster than replacing the roof of a sprawling estate.

The Steepness of the Roof

A roof that is too steep to walk across or one that materials and tools will slide off of, will require the installation of additional safety equipment. A roof whose pitch is shallow enough to slow the run off of water will require special underlayment so that water backups can’t penetrate the housing envelope. Either of these conditions will increase the length of time that the roof takes to install.

Historical Significance of Home

Some older homes are listed as historical landmarks. These homes require additional time and care to ensure they maintain both their historical and structural integrity. They may also require other permits, depending on local regulations.

Structural Damage

If only the shingles need to be replaced, a roof replacement will be reasonably quick. However, if there’s structural damage beneath the shingles, this can significantly prolong the total project duration.

The Process of Roof Replacement

  • The first part of a roof replacement project is to tear off the old shingles, while protecting the landscaping and exterior of the home. Once the shingles are gone, the materials beneath are assessed for damage. The roofer will be looking for rot and cracked flashing or boards.
  • If any structural damage is found, it’ll have to be fixed. This may increase the amount of time a roofing project takes. Once that is finished, deck protection and vapor barriers will then be installed.
  • The next part of the roof replacement process is also the most time-consuming. All the shingles that were torn off will now need to be replaced. This takes considerable time because the roofers need to make sure the shingles lay straight and even, so they work together correctly to prevent leaks.
  • The last part of the project is to clean up. A roof replacement will create a lot of construction debris that the roofing company should take care of. Once all the old parts of your roof have been hauled away, the project is done.

How to Choose the Right Roofing Company

Replacing the roof on your home or business is a significant home renovation project. You want to ensure you choose the best company available in your area. If something goes wrong, the effects could be disastrous to the overall health of your home.

One of the best ways to choose the right roofing company for your project is to check online review sites. These are sites that allow previous customers to rate their experience with a specific company. The experience of past customers is an excellent indicator of how your own experience will go.

You can also ask people you trust if they’ve used a roofing company. If they have, ask if they’d recommend the company they used. Be sure to ask why they would or wouldn’t work with that company again.

The last thing you need to do is ensure the roofing company you hire is licensed and insured. Working with a licensed company means you’ll hire professionals who’ve gone through the requirements to work in your area legally. Insurance protects you and the company in case anything goes wrong or someone becomes injured on the job.

Do You Have More Questions About Roof Replacement?

A roof replacement project can vary between a single day and two weeks. Many different considerations will factor into the total project time.

Do you have more questions about how long does it take to replace a roof? Or, would you like to schedule a roof replacement for your home?

Contact us today.  Our friendly office staff would be happy to schedule a free roof inspection. We look forward to answering your questions! Call us at 616-663-7662.

Related Posts

skylight fitted

8 Reasons Why You Should Install a Skylight

A light source can change how your home feels and functions. One of the easiest ways to brighten up a living space is by getting a skylight fitted and installed on your roof. You might think skylights are only useful to look at, but you’d be wrong. They’re much more than meets the eye. The addition

Read More »