Ever tried finishing a flat roof in frost and damp conditions? Winter roofing in the UK has its challenges. Days are short, decks are wet, and curing times can vary. When winter hits, UK roofers face these issues: short days, wet surfaces, and unpredictable curing times. At Apex, we've tested products that work well in harsh weather. Here are three winter-ready GRP roofing kits. They keep projects on track, even in tough conditions. 1. HPX Hybrid Polymer Roofing System Fast, Flexible, and Built for Damp Conditions When the weather turns, few materials work as smoothly as HPX Hybrid Polymer. It’s designed to go straight from tin to roof – no primers, no mixing, no downtime. That simplicity alone saves valuable time on-site, but HPX goes further. Its hybrid polymer formula bonds to nearly any surface, even if it's slightly damp. This forms a strong, watertight membrane in just hours. The cured finish flexes with temperature changes, so it won't crack or peel when frost arrives. Roofers who use HPX in winter get two main benefits: Strong grip on cold concrete and faster application when the days are short. Overlay repairs and quick maintenance jobs are a win for pros and DIYers alike. Try HPX Hybrid Polymer – quick, easy, and winter-ready. 2. Cure It ONE Roof Kits (Anthracite Grey) True Single-Coat System The Cure It ONE Roof Kit makes flat roofing quick and easy. Unlike multi-coat systems, it provides full waterproof protection in just one layer. One coat means less handling and waiting, speeding up jobs, which is great for cold winter months. The Anthracite Grey finish looks modern. It fits both home extensions and commercial flats. Once cured, it’s UV-resistant and tough. It withstands heavy rain, frost, and temperature changes. The kit comes pre-measured and ready to use–no mixing or guessing required. Add Apex’s winter catalyst, and it cures reliably below 10 °C. Roofers choose Cure It ONE for its dependability. Property owners enjoy the clean look. Plus, everyone saves time. Try Cure It ONE – one coat, fast, and keeps roofs dry. 3. Ultra-Flex GRP Kits No Re-Boarding Needed The Ultra-Flex GRP Kit earns its reputation for versatility. You can apply it directly to asphalt, concrete, or metal surfaces. This saves time on refurbishment or overlay work by eliminating the need for re-boarding. Ultra-Flex forms a flexible, smooth membrane. It easily adapts to surface movement and prevents cracking from temperature changes. That flexibility is especially useful on older roofs where substrate conditions vary. Professional installers trust Ultra-Flex. It offers reliable adhesion and needs little prep work. Plus, it comes with free delivery. These benefits make it a smart choice for anyone juggling multiple winter jobs. You get reliable performance without extra hassle. Try Ultra-Flex GRP – easy to apply, no re-boarding needed. Why Roofers Trust These Kits in Cold Weather In colder months, you need materials that cure properly and stay flexible after setting. All the systems listed above work well in cold and damp conditions. Built-In Winter Catalyst Each Apex roofing kit now comes with a winter catalyst. This catalyst helps ensure full curing in cold or damp conditions. This means fewer weather delays, shorter wait times, and roofs that stay sealed year-round. Reduced Preparation Time HPX and Ultra-Flex stick right to current surfaces. This means less sanding, priming, and cleaning. Cure It ONE makes things easier with its single-coat process. This is perfect for when weather windows are short. Professional Finish Without the Wait The Anthracite Grey Cure It ONE finish, plus HPX and Ultra-Flex seamless membranes, delivers a sleek and durable result. This meets professional standards for all projects. Pro Tips for Cold-Weather Roofing Plan around daylight: Start early, and choose rapid-curing systems like HPX for afternoon work. Check surface temperature: Aim for at least 5°C before application; use warming blankets or heaters if required. Store materials indoors: Cold resin thickens quickly – keep tins at room temperature until use. Use winter catalyst sparingly: Follow mixing ratios precisely to avoid over-acceleration. Keep ventilation steady: Condensation is a silent job-killer; consistent airflow ensures proper bonding. Small changes like these can turn a perfect cure into a failed bond. Winter brings challenges, but the right products help you stay confident all season. These three winter GRP roofing kits have been hand-picked for one reason, they work. Stay warm, stay dry, and keep your projects on schedule. All the best,Paul & the Apex Team
