GRP roofing guides
Costs, coverage maths, catalyst tables and how-to — the same figures our kit builder uses, written for people actually doing the job.
How Much Does a GRP Fibreglass Roof Cost? (UK Guide)
Real UK costs for a GRP fibreglass flat roof: materials per m², a worked 15 m² garage example, and what pushes the price up — with no marketing fluff.
Read the guide →How Much Resin, Topcoat & Matting Do I Need for a GRP Roof?
The GRP coverage maths, plain and simple: kg of resin, topcoat, matting, catalyst and acetone per m², with worked examples for 10, 15 and 25 m² roofs.
Read the guide →GRP Roofing Kit Guide: What You Actually Need
Every item in a proper GRP roof kit explained — resin, matting, topcoat, catalyst, trims, tools — and what the Essential, Protect and Premier tiers mean.
Read the guide →Fibreglass Roof Catalyst Guide: MEKP % by Temperature
How much MEKP catalyst to add to GRP roofing resin at every temperature — the 1–4% dose table, working times, cold and hot weather tactics, and safety.
Read the guide →GRP Roof Trims Explained: A200, B230, D260, C100, F300
What every GRP roof trim does and where it goes — A200 drip, B230 raised edge, D260 wall fillet, C100 cover flashing, F300 flat flashing and corners.
Read the guide →GRP vs Felt vs EPDM: Which Flat Roof Is Best?
An honest comparison of GRP fibreglass, felt and EPDM flat roofs — cost, lifespan, DIY difficulty, foot traffic, looks — from people who sell one of them.
Read the guide →How to Fibreglass a Flat Roof: Step-by-Step GRP Guide
The full GRP flat-roof process in order — deck prep, trims, bandaging, laminating, topcoat — with a realistic one-day plan, timings and the checks that matter.
Read the guide →Fibreglass Garage Roof Cost & Kit Guide (UK)
What a GRP fibreglass garage roof costs in the UK — single and double garage worked examples, which kit tier to buy, deck advice and honest DIY difficulty.
Read the guide →10 Common GRP Roofing Mistakes (and How to Avoid Them)
The GRP failures we see again and again — catalyst errors, damp decks, skipped bandage, wrong trims, starved laminate — and exactly how to avoid each one.
Read the guide →GRP Roofing Materials Delivery in the UK: How It Works
How GRP roofing materials are delivered in the UK — why resin and catalyst need ADR hazardous-goods couriers, postcode pricing, pallet delivery and collection.
Read the guide →Know what your roof needs already?
Draw your roof in the kit builder and get an exact itemised bill of materials — with the working shown for every line.
Open the kit builder