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  • Writer's pictureJoshua Stannard

How Often Should a Flat Roof Be Redone? - A Comprehensive Guide for Flat Roofing Doncaster

Flat roofs are a popular choice for many homeowners and commercial property owners in Doncaster, thanks to their cost-effectiveness, space efficiency, and modern aesthetic appeal. However, like any other roof type, flat roofs require regular maintenance and occasional replacement to ensure they continue to provide optimal protection against the elements. So, how often should a flat roof be redone? This article will delve into this topic and provide some valuable insights for those considering flat roofing in Doncaster.

Understanding the Lifespan of Flat Roofs

Before we discuss how often a flat roof should be redone, it's essential to understand its typical lifespan. The longevity of your flat roof largely depends on the material used. For instance, built-up roofs (BUR) can last between 15-30 years, while modified bitumen roofs have an average lifespan of 10-20 years. PVC and TPO roofing systems can last up to 20-30 years with proper maintenance.

However, these are just averages; several factors can influence your flat roof's lifespan. These include weather conditions (especially harsh winters and hot summers), the quality of installation work done by your roofing contractor, and how well you maintain your roof.

Signs Your Flat Roof Needs Redoing

Knowing when to redo your flat roof is crucial in preventing extensive damage that could lead to costly repairs or even a complete replacement. Here are some signs that indicate it might be time for a redo:

1. Leaks: This is one of the most common signs that your flat roof needs attention. If you notice water stains on your ceilings or walls or puddles forming on your floor after rainfall, it’s likely that your roof has leaks.

2. Blisters: These are raised areas where water has become trapped under the roofing material. They can lead to leaks if not addressed promptly.

3. Cracks or splits: Over time, the materials used in flat roofs can shrink and crack. These cracks can allow water to seep into your property, causing further damage.

4. Age: If your roof is nearing the end of its expected lifespan and showing signs of wear and tear, it might be time to consider redoing it.

How Often Should a Flat Roof Be Redone?

Generally speaking, a flat roof should be redone every 15-20 years. However, this timeframe can vary based on the factors mentioned earlier. For instance, if you live in an area with harsh weather conditions or if your roof was not installed properly initially, you may need to redo your flat roof sooner.

It's also worth noting that regular maintenance can significantly extend the life of your flat roof. This includes routine inspections (at least twice a year), prompt repairs of any damage, and keeping the roof clean and free from debris.

Choosing the Right Contractor for Flat Roofing Doncaster

When it comes time to redo your flat roof, choosing the right contractor is crucial. You want a company that specializes in flat roofing in Doncaster and has a proven track record of delivering high-quality work.

Look for contractors who are licensed and insured, offer warranties on their work, have positive customer reviews, and are willing to provide references. Remember that while cost is an important factor when choosing a contractor, it shouldn't be the only one. The quality of workmanship will directly impact how long your new flat roof will last.


Redoing a flat roof is an investment in your property's longevity and value. While there's no definitive answer to how often this should be done due to varying factors like material type and weather conditions, generally speaking, every 15-20 years is a good rule of thumb for most properties in Doncaster.

Regular maintenance and inspections can help extend the life of your flat roof and prevent minor issues from becoming major problems. And when it's time for a redo, choosing a reputable contractor specializing in flat roofing in Doncaster is key to ensuring your new roof will stand the test of time.

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