Professional roofers from Kevington Roofing and Building LTD performing a new roof installation on a house in Bromley

Expert GRP Fibreglass Roofing in Brentwood


Call Your Local Brentwood Expert
01689 663319
Serving Brentwood & Essex

Our Seamless Flat Roof Installation Process

Installing a waterproof flat roof requires precision, high-quality materials, and expert craftsmanship. We never cut corners, ensuring every stage of our process is carried out to the highest standard.Initial Structural Assessment: We begin with a thorough inspection, often utilising our advanced drone roof surveys to safely assess the condition of your existing roof decking and joists.Safe Removal and Disposal: Our team carefully strips away the old failing felt or membrane, ensuring the underlying timber structure is sound, dry, and free from rot.Installing High-Quality Decking: A successful GRP roof requires a perfect substrate. We install brand-new, interlocking OSB3 timber decking boards to create a rigid, stable base that allows the resin to bond correctly.Laying the Seamless Membrane: We apply a layer of cold liquid resin, embedding high-strength fibreglass matting into it. This liquid-applied roofing process eliminates the fire risks associated with traditional hot-torch methods.Applying the UV-Resistant Topcoat: Once the laminate layer cures, we finish the roof with a protective, UV-resistant topcoat, giving your flat roof a sleek, aesthetic, and fully weatherproof seal.Our meticulous approach ensures your new flat roof installation in Brentwood will withstand decades of heavy rain, foot traffic, and temperature fluctuations.

Croydon & South London

01689 663319

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Roofer working on a flat roof installation or repair
Trusted Flat Roofing Experts

Why Choose Kevington for GRP Fibreglass Roofing in Swanley & Kent?

Why Choose Glass Reinforced Plastic for Your Property?

Choosing the right material for a flat roof replacement is a big decision for any homeowner. GRP fibreglass stands out as one of the most reliable and cost-effective solutions on the market today.Exceptional Longevity: Unlike traditional felt roofs that can blister and crack in the sun, a properly installed GRP roof will easily last for several decades without needing replacement.Completely Seamless: Because the liquid-applied roofing cures into a single, continuous sheet, there are no weak joints or welded seams where water can penetrate.High Structural Strength: Glass Reinforced Plastic is incredibly tough. It easily tolerates regular foot traffic, making it the perfect choice for roof terraces, balconies, and flat roofs that require occasional access for window cleaning.Fire-Retardant Properties: Our top-tier GRP systems offer excellent fire resistance, adding a vital layer of safety to your home.Zero Maintenance: Once the topcoat is applied, the roof requires virtually no maintenance, easily resisting moss growth and debris accumulation.If you are tired of patching up an old, leaking garage or extension roof, a seamless roofing system is the ultimate long-term investment.

Navigating Local Building Regulations Safely

As a responsible local roofing contractor, we take compliance with UK Building Regulations very seriously. Upgrading or replacing more than 25% of a flat roof means the thermal efficiency of that roof must meet current Part L building regulations. We handle all the technical details so you do not have to worry about the red tape.During your structural assessment, we will advise whether a warm roof or cold roof insulation setup is best for your property. By integrating high-performance rigid insulation beneath your new GRP membrane, we ensure your home retains heat, reducing your energy bills and preventing internal condensation issues.Importantly, fibreglass roofing is a cold-applied system. This means absolutely no hot works or blowtorches are used during the installation process, making it a much safer option for your property. Every installation by Kevington Roofing and Building LTD is fully insured with robust public liability cover, giving you complete peace of mind.

Dedicated Roofing Specialists Serving Essex

While our company is rooted in the South East, we are proud to serve homeowners across Brentwood and the wider M25 corridor. Whether you live in a modern home near Brentwood High Street or a more traditional property in the surrounding Essex villages, our local knowledge ensures we recommend the perfect roofing system for your specific architecture.We regularly provide flat roof installations, emergency call-outs, and structural repairs in areas covering the whole Brentwood district. Because we understand the local climate and housing stock, we know exactly what it takes to protect your property from driving rain and harsh winter weather.If you are looking for trusted roofing experts to inspect your flat roof, we are always just a phone call away at 01689 663319.

What Makes Our Directly Employed Team Different?

With so many options available, choosing a roofing company can feel overwhelming. Kevington Roofing and Building LTD stands out because we are built on a foundation of transparency, skill, and trust. We bring 25 years of hands-on experience to every project, ensuring that your home is treated with the utmost respect.We are a fully registered UK company (No: 12676001), and we strictly employ our own dedicated staff. This means we never pass your job off to unknown subcontractors. From the initial drone survey to the final sweep-up, the team working on your home is accountable, highly trained, and fully insured.We believe in honest pricing. When you request a flat roof replacement quote from us, you receive a detailed, itemised breakdown with absolutely no hidden fees or pushy sales tactics. You deal directly with the experts who will be fitting your roof.

Why Choose Kevington Roofing and Building LTD?

Your trusted, fully insured roofing specialists delivering durable GRP fibreglass flat roofs across Swanley, Sevenoaks, Croydon, and Kent.

Local Kent & London Experts

Based in Orpington, we have a deep understanding of local building requirements, proudly serving a 20-mile radius including Swanley and Sevenoaks.

25 Years of Expertise

With over two decades of hands-on experience, our directly employed team ensures flawless GRP installations. We never use unknown subcontractors.

Premium GRP Fibreglass

We install high-grade, cold-applied liquid membranes engineered to withstand the harshest UK weather, providing a seamless, waterproof finish.

Transparent, Itemised Quotes

As a fully insured, registered UK company (No: 12676001), we provide detailed, no-obligation quotes with absolutely no hidden fees.

Newly installed flat felt roof with guttering

Frequently Asked Questions About GRP Systems

How long will a GRP flat roof last?When installed correctly using high-grade materials and OSB3 decking, a GRP fibreglass roof can easily last upwards of 30 years. The seamless, UV-resistant finish means it will not degrade under sunlight or crack during freezing winters.Can you install fibreglass over my existing felt roof?We do not recommend this. For the liquid resin to bond properly and form a waterproof seal, it must be applied to dry, newly laid OSB3 timber decking. We will strip away your old failing roof to ensure the underlying joists are secure before installing the new system.Is GRP better than EPDM rubber roofing?Both are excellent modern alternatives to felt. GRP is highly rigid and brilliant for roofs that experience foot traffic or incorporate complex shapes. EPDM is highly flexible and great for large, simple flat roof expanses. During our initial survey, we will recommend the best solution for your specific property.What happens if I have an emergency leak?If your current flat roof has failed and water is coming in, call our emergency repair team immediately at 01689 663319. We provide fast response call-outs to secure your property and prevent further internal damage before quoting for a permanent fix.

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Roofing Services Across Croydon & South London: 01689 663319

What Our Clients Say About Kevington Roofing and Building LTD

"Fantastic service from the team at Kevington Roofing and Building today. They were recommended by a friend and I was very impressed. I’ll be using them again."

Celia Bennett

"Reliable and prompt - the Kevington team was able to view the property and provide options and transparent, itemised quotes on the same day I called. After deciding what level of work I wanted done, they returned soon after to carry out the roof repairs to a high standard without me even needing to be there."

Philip Day

"Highly recommended! Great price! First class job. Nothing was too much for these lads, very polite, got the job done and more. When they had finished they cleaned up that well, even took some of my own rubbish away for me. Well done lads! Not often you get a good, honest local roofer anymore! Thanks again."

Nick Mangnall

GRP Fibreglass FAQs

Frequently Asked Questions About GRP Flat Roofing

Got questions about upgrading or repairing your flat roof? Kevington Roofing and Building LTD provides expert answers on our durable, cold-applied liquid membrane systems for homes across Croydon & South London, Swanley, Sevenoaks, and Kent.

How much does a new GRP fibreglass roof cost in Swanley?

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The cost of a fibreglass roof replacement in Kent depends on the size of the area and the condition of the underlying timbers. Generally, while the initial cost is slightly higher than felt, the fact that it lasts twice as long makes it the most cost-effective flat roof installation in the long run. We provide free, itemised quotes so you can see exactly where your money is going.

Can a GRP roof be installed in any weather?

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Fibreglass needs dry conditions to cure correctly. While we can work throughout the year in Swanley, we carefully monitor the weather. We will never start a resin application if rain is forecast, as this would compromise the waterproof seal. Our team uses temporary coverings to keep your home dry at all times during the process.

Is GRP roofing noisy when it rains?

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This is a common myth. When installed correctly with high-quality OSB3 decking and proper insulation, a GRP roof is no noisier than any other roofing material. In fact, many homeowners find it quieter than old thin felt roofs because of the solid timber base we install underneath the laminate.

How long will the installation take?

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Most domestic flat roofs in Swanley, such as a standard garage or kitchen extension, can be completed in one to two days. We aim to work efficiently to minimise disruption to your daily routine, and we always make sure the site is safe and secure at the end of each day.

Still have questions? Contact our Croydon & South London Roofing experts today!

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Proudly Serving Orpington, Bromley, Kent & South East London

Kevington Roofing and Building LTD are your trusted local roofing experts, bringing over 25 years of hands-on experience to properties across South East London and Kent. Based in Orpington, we cover a 20-mile radius, providing fully insured, compliant, and reliable roofing solutions. Explore our primary service areas below.

Our Key Service Areas

Bromley & Bexley

  • Bromley: Orpington, Beckenham, Chislehurst, West Wickham, Biggin Hill
  • Bexley: Bexleyheath, Sidcup, Welling, Erith, Crayford
  • Emergency roof repairs across both boroughs

Kent, Croydon & Beyond

  • Kent: Sevenoaks, Dartford, Westerham, Swanley, Longfield
  • Croydon: Purley, Coulsdon, Sanderstead
  • Greenwich & Lewisham: Eltham, Blackheath, Catford
  • Covering a 20-mile radius from Orpington

Your Trusted Local Experts

  • Expertise with 1930s semis & Victorian terraces
  • Compliant with UK building control & local rules
  • Directly employed staff—no unknown subcontractors
  • Over 25 years of proven industry experience

Need Roofing Services?

Contact Kevington Roofing and Building LTD today for a transparent, no-obligation quote or fast response call-out across Kent and South London.

Call Us Today

If your specific location in South East London or Kent isn't listed, please don't hesitate to get in touch! We cover a wide 20-mile radius from our Orpington base.

Our South East London & Kent Coverage

Map shows our primary service areas across Orpington, Bromley, Kent, and South London.

Get a Free Quote for Your GRP Fibreglass Flat Roof Today!
Call Croydon & South London's Trusted Roofing Specialists on 01689 663319