What are the pros and cons of a flat roof?

Posted on 21 October 2021

Do you need to choose roofing for your property? If so, you may be wondering “What are the pros and cons of a flat roof?” This is a common question we get asked here at Raven Roofing and Repairs. Read on to find out more about this popular roofing type. 

What is a flat roof? Flat Roofing Grimsby

Before we consider the pros and cons, let’s think about what exactly a flat roof is. Flat roofs are those that are almost level. Whilst they’re labelled as ‘flat’, these roofs tend to be somewhat sloped so that rainwater can run off them. The slope normally measures around 10”, which is much less than a pitched roof. Flat roofs haven’t always been common in the UK. In fact, they only really became prevalent after World War II due to their low cost in comparison to pitched roofs. Flat roofs have long been common in warmer countries that have less rainfall to contend with. 

The benefits of flat roofs

There are many benefits of flat roofs that make them a good choice for both residential and commercial properties. Here are the pros of opting for a flat roof: 

  • Lower price. If you’re looking for a low-cost roof, look no further. Not only does a flat roof require fewer materials for its construction but these materials are also cheaper than tiles and rafters. As such, flat roofs are usually cheaper to install. They take far less time to fit too, which means that labour costs are also lower. You can make significant savings by opting for a flat roof.
  • Quick installation. Since flat roofs are easier to install than many other roofing types, installation can be very quick. So, if you’re in a hurry to fit your new roof, a flat roof may be a good choice. Maintenance of flat roofs is also quick and easy, requiring minimal upkeep to keep it looking and performing its best. 
  • Versatile. Many people don’t take into account the versatility of flat roofs when choosing roofing for their properties. Unlike pitched roofs, flat roofs can be used for a variety of purposes. For example, some people opt to turn theirs in a rooftop garden where they sit and relax during the summer months.
  • Energy-efficient. Flat roofs are more energy-efficient than traditional pitched roofs. This energy efficiency is largely a result of differences in insulation. The rigid insulation used in flat roofs doesn’t have gaps in it like a cavity system does, with no overhead space where air can stagnate. This helps to keep homes warmer, meaning lower energy consumption and costs.

The drawbacks of flat roofsflat roofing in Louth

Whilst there are several benefits of flat roofs, there are also drawbacks to think about. Consider these disadvantages carefully before you opt for a flat roof:


  • Lack of Drainage. By far the biggest drawback of a flat roof is the lack of drainage. Even though flat roofs are usually slightly sloped to allow water to drain, it can still build up after periods of heavy rainfall, or snow. You’ll need to clean out the drains inspect the roof for water damage regularly. If flat roofs don’t drain properly, leaks can occur, causing damage to the interior of your property. 
  • Dirt and debris build-up. Water isn’t the only thing that can cause issues on a flat roof. Dirt and debris such as leaves and twigs can build up over time, particularly if the property is located near to trees. This debris can clog up the drain, making it more likely that water and snow won’t drain properly.
  • Shorter lifespan. Flat roofs are widely thought to have a shorter lifespan than other types of roofs. Conventional pitched roofs may last up to 10-20 years longer in some cases. Having said this, when they’re constructed by a reputable roofing company with high-quality materials, a flat roof is still likely to last for decades. Keep in mind that proper maintenance is key when ensuring the longevity of your flat roof. 


Flat roofing in Grimsby and Louth 

When considering what are the pros and cons of a flat roof, you should also take into account your needs and budget. If you’re looking for roofing that can be quickly installed at a very low price, it could be the ideal choice. Flat roofing is also likely to be the best option if energy efficiency is important to you or you want to turn your rooftop into a garden perfect for relaxing all year round.  

For flat roofing in Grimsby or Louth, look no further than Raven Roofing and Repairs. We’ve been installing this popular type of roofing for many years, providing a high-quality service our customers can depend on. As well as installing flat roofing to the highest standard, we can also carry out regular inspections and maintenance to ensure that it stays looking and performing its best long into the future. We’re always on hand to offer expert advice regarding choosing roofing for your property, so don’t hesitate to contact us if you do require any assistance. We can guide you every step of the way.

Contact us 

Now that you know what are the pros and cons of a flat roof, you may be looking for a local roofing company to install it for you. For flat roofing in Louth or Grimsby, get in touch with Raven Roofing and Repairs today. Call us on 01472 565 084 or Louth 01507 640 072 to discuss your roofing needs with one of the team. Alternatively, send us a message via our website and we’ll get back to you. We can answer all your questions about flat roofs or provide you with a competitive quotation. 

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