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. 

Customer Reviews
Raven Roofing & Repairs Ltd
Based on 39 reviews
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Shawn Bosworth
Chris and his apprentice were brilliant! Came out in the miserable rain and made my roof water tight again. I had several quotes from other roofers, cowboys trying to milk my desperation for silly money. Chris was honest, fair and reasonably priced. Highly recommended, thanks!
mark appleby
Extremely Happy with Job!Chris, Quickly assessed the roof and gave options on what could be done.Once Date Agreed, delivered on time with a very professional looking job. Job was in Feb and Chris and Team went out of their way to get the job done even though weather was bad at end of week. They left Work area very clean. Highly reccomend them!
Bev Barley
Thanks for doing a first class job would highly recommend Chris for a job well done
Robert Meadows
Mike Downs
Fantastic, would recommend to anyone who needs roof work. Polite, helpful and super fast. Thanks so much.
Lisa McMahon
Had a leak from my roof. Chris came out the same day althoughthe weather wasn't good. He surveyed the roof and found the problem immediately (a tile had slipped), took photo's before and after replacing the slipped tile. I asked how much I owed him - he said there was NO charge as it was a quick repair. What a lovely, kind, genuine guy! Would highly recommended him and his company.
Roland Packer
We recently had the roof on our extension replaced by raven roofing. Chris and his young helper couldn't have been more helpful. Work done to a very high standard. Quote honoured to the penny. Genuinely nice people and a real pleasure to do business with. Will definitely call them for the services they offer, when needed.
Michelle Packer
Can’t recommend this company enough. Did a great job on our roof , very friendly team , punctual, good quality work and good value for money . Many thanks
Carol Howden
Very friendly team and carried out a great job. Arrived and just got on with the job. Looks great
andrew engeham
Competitive price and excellent workmanship.Highly recommended.
Keith Brown
Great company great service
John Hornsby
Came on time very Satisfied with wat was done. Will be using them again if needed
Omer Khalifa
renegade jokerrr
Fantastic service! Nice and friendly guys! Very quick work! Great customer service! If I need any repairs in the future i will use Raven again.
Margaret Dabb
After being let down by another firm i rang Chris in desperation. Within an hour he arrived, looked at work, discussed, priced and booked a date. Arrived on time, everything ran like clockwork even in the awful heat they had to work through. Very well organised, very tidy, would have no hesitation in recommending his work. Many thanks
Zoe Gibbons
Can’t recommend Chris and his team more, they were all friendly, polite and efficient and left my patio tidier than it was before! Nothing was too much trouble and good quality work and price. I’d definitely recommend Raven Roofing to all my friends and family.
Alan Grosschmidt
Would Recommend Raven Roofing.We had new gutters and facias fitted all round the house.We were really pleased with the completed job.I did point out a minor oversight, which Chris promptly dealt with.The quote for the job was very competitive and I doubt you could get it done cheaper.So deserves 5 Stars.
Andrea Goforth
Was very happy with the prompt, professional, and friendly service provided by this company . They were so quick to help me out and repair a badly storm damaged roof. It is such a joy to have a service provider come when they say they will! Reasonable price and good quality workmanship too . Thank you, Raven Roofing .
We had the tiles down the gulley re-bedded.Very professional and cleaned up afterwards. Really friendly and very kind guy and we will definitely be using Raven Roofing again in the new year to do our guttering! Thanks Chris 👍🏻
Mike Prior
they repaired a dislodged tile free of charge. Just asked To be remembered for other works and telling my friends
Sally Melton
Had a skylight fitted. Excellent service, fitted my job in even though extremely busy. Was absolutely delighted the attention to detail was perfect. Made sure everything was tidied up and taken away. Thank you again. Would highly recommend.
Ali Wickham
Peter Hogarth
These guys did a great job repointing my roof gulleys
Pamela Blow
Samantha Blow
Excellent service, I would highly recommend :)
Derek Coates
Chris promptly repaired the front guttering which is now ok.
Lee Popham
Rang raven to come and fix my roof after last months storm, came next day and repaired, very happy with service and price, will definitely use again.
Mark Barnard
Very good reliable service all work guaranteed
kevin langley
When we needed urgent roof repairs, Raven Roofing & Repairs came to the rescue. Great quality work undertaken by true professionals.
Steve Nowell
I recently had repairs done to my roof. The response and service were excellent, nothing was too much trouble and the work carried out effectively and efficiently
Kelly Brewer
Excellent service, recently had repairs carried out on my house roof, Chris was really friendly, work carried out to a great standard at a great price 🙂
We have used Raven Roofing several times for small repairs as we didn't want to go to the expense of a new roof, but recent torrential rain forced us to accept we needed a new roof. We were dreading the bill but Raven Roofing were very reasonable (not sure if I'm allowed to say how much).The scaffolding arrived and was put up promptly, Raven Roofing arriving a couple of days later to start work, the only delays were due to bad weather and Raven Roofing contacted us to let us know about any delays which we really liked, usually builders don't bother. Raven roofing were polite, friendly and courteous at all times.Out roof was completely stripped and replaced in a week, all rubbish was removed and the gardens left looking tidy.The roof itself looks fantastic...we are very very pleased and highly recommend Raven Roofing.