Expert GRP Fibreglass Roofing
in Swanley, Sevenoaks & Kent
Seamless, highly durable flat roof installations by Kevington Roofing and Building LTD. Over 25 years of trusted local expertise.

A fibreglass roof is only as good as the decking it sits on and the precision of its application. We do not cut corners. Our directly employed roofing technicians follow a strict, systematic process to guarantee a perfect, maintenance-free finish every time.Thorough Structural Assessment: We inspect your existing roof joists to ensure they are structurally sound and capable of supporting the new system.Complete Strip and Deck: We remove the old, failing felt and install high-quality, interlocking OSB3 timber decking boards. This provides a rigid, secure base for the fibreglass.Bespoke Edge Trims: Pre-formed GRP edge trims are securely fixed to the perimeters, directing water exactly where it needs to go and preventing edge ingress.Laying the GRP Membrane: A layer of catalysed resin is applied, followed by chopped strand fibreglass matting. This is consolidated with metal rollers to remove trapped air and create a solid, cold-applied liquid membrane.Protective Topcoat Application: Once the base layer cures, a pigmented, weather-resistant topcoat is applied. This seals the roof completely and provides a highly attractive, durable finish.

Upgrading to a GRP system is an investment in the longevity and security of your property. Traditional roofing felt often relies on heat-welded seams, which are notorious weak points where water ingress usually begins. Because fibreglass is applied as a liquid, it cures to form one continuous, seamless sheet with zero joints to fail.The benefits speak for themselves. Fibreglass is highly resistant to temperature fluctuations, meaning it will not soften in the summer sun or crack during winter freezes. It is completely waterproof, highly durable against foot traffic, and inherently fire-retardant. Furthermore, because it is a cold-applied system, the installation process requires absolutely no hot works or blowtorches, making it a much safer option for residential properties. Whether you are considering a new flat roof installation in Sevenoaks or a garage roof replacement in South London, GRP delivers unmatched kerb appeal and peace of mind.

Navigating UK building regulations can be daunting, but as your trusted local experts, we handle the red tape so you do not have to. When replacing more than 25% of a flat roof, current Building Regulations often require the thermal efficiency of the roof to be upgraded. Our team is fully versed in installing modern warm roof systems alongside your new GRP membrane, incorporating high-performance rigid insulation boards to keep your property warm and compliant.We also pay close attention to ventilation and condensation risks, utilising high-quality breather membranes where necessary to protect your roof timbers from damp. By choosing Kevington Roofing and Building LTD, you are partnering with a compliant, knowledgeable contractor who ensures every aspect of your new flat roof meets rigorous local authority standards safely and effectively.

Based locally, we are proud to serve a 20-mile radius spanning Kent and South East London. We regularly undertake GRP fibreglass roofing projects in Swanley, Sevenoaks, Dartford, and across local villages like Eynsford, Farningham, and Shoreham. Furthermore, our coverage extends extensively throughout the South London corridor, with a strong focus on areas like Croydon, Purley, and Sidcup.From Victorian terraces in Beckenham to modern extensions in Croydon, we understand the specific challenges presented by local housing stock. Wherever you are based in the region, our experienced local roofers are ready to respond promptly. If you require emergency roof repairs to stop a sudden leak, or you are planning a complete flat roof replacement, you can rely on our fast response and expert knowledge.