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Best Flat Roof Systems in 2020

Turn back to the clocks by 20 years and traditional felt was the only flat roofing system that most people were familiar with. However, felt always had its drawbacks, from a need for constant repairs to a low life expectancy of between 10-20 years.

Fast forward to 2020 and there are a great range of modern, high-quality roofing systems on the market. This can make the process of finding the best roofing system for your home difficult, if you don’t have an idea of what you need. Each system has a host of benefits and all claim to be the best modern flat roofing system. 

The truth is that no one flat roofing system can ever be called “the best” as each has its own different features, benefits and methods of installation. Consequently, the real question you should be asking, is not which flat roofing system is the best, but rather which is best for you. 

To help you answer this question we have put together a list of key benefits and limitations for some of the most popular flat roofing systems, with some expert advice as to why they may be the best choice for you.

EPDM Rubber Roofing

Best for ease of installation and longevity 


  • 50 Year Life Expectancy
  • Easy & Quick to install
  • Supplied in one sheet
  • Low Maintenance & Long-lasting


  • No suitable for foot traffic 
  • Membrane can puncture with strong impact

EPDM rubber roofing is now one of the UK's leading flat roof systems. Easy to install and a 50-year life expectancy means these single-ply membranes are the ideal choice for domestic and commercial properties. To find out more about EPDM rubber roofing, click here

GRP Fibreglass Roofing 

Best for durability & a seamless contemporary look


  • Tough & impact resistant finish
  • Seamless contemporary look
  • Suitable for foot traffic 


  • Installation is not DIY friendly
  • Rigidity means prone to cracking  

Fibreglass roofs are strong, robust and durable. Supplied in component form, the liquids are applied over a reinforcement layer of chopped strand matting. The resulting seamless and stunning roof is a favourite amongst homeowners and tradesmen alike. 

Find out more about GRP Fibreglass Roofing, and the options we have available here


Polyurethane Liquid Roofing 

Best for overlaying existing felt


  • Single coat application
  • High tensile & tear strength
  • No mixing required 


  • Not the best looking finish
  • Unknown life expectancy 

Polyurethane liquid systems are now becoming more and more popular thanks to their ability to be installed straight over an existing roof surface like felt or GRP. They are a no-nonsense straight out of the tin solution which is also suitable for use during the winter months when the temperatures drop. Find out more about polyurethane liquid roofing and the options we have available here


Liquid Repair Systems 

Best for a cheap quick fix


  • Instant waterproof protection 
  • Can be applied in damp conditions 
  • Laid onto most roof surfaces


  • Only a short term fix 

Supplied in single tin form these are easy and quick to apply and ideal for when you just need to get that leak fixed as quickly as possible and on a budget. These repair liquids are cold applied and fibre reinforced. They can be used in most weather conditions and laid onto many roof surfaces. Find out more about our Liquid Repair Systems that we provide here

Here at RoofDepot we understand that finding the right roofing system for your specific needs can be a daunting and time consuming task. If you’d like to speak to one of our expert team in more detail, give us a call on 024 7670 7700. One of our specialist team members will assess your specific requirements and advise you on the most suitable roofing system for you.