Tricel HPX

Innovative Hybrid Roof Solution for New & Existing Flat Roof Systems

Need a fast, reliable waterproofing solution for failing flat roofs without the disruption, mess, and expense of a full strip-up? We stock the high-performance Triroof HPX Overlay Roofing System on the shelf, ready for immediate collection or dispatch. Designed for direct application over existing substrates, it provides a seamless, heavy-duty finish with zero project delays.

TriRoof HPX from Tricel creates a damp-tolerant membrane which ensures year-round application, allowing roofers to stay productive in all seasons, even during wet weather. This system will adhere to almost all building substrates including rubber, concrete, metal and flooring. It is available in a light or dark grey finish. As part of the TriRoof line of flat roofing products, HPX can be applied quickly and easily, making it an ideal choice for flat roofing fibreglass and GRP roofing applications.

Why Buy Triroof HPX From Gordon H Richards?

No Lead Times, Zero Delay: Every component of the Triroof HPX system is held in physical stock at our trade counter. Grab what you need today and keep your project on schedule.

  • Trade & DIY Stockists: Whether you’re overlaying a small domestic garage roof or tackling a large commercial refurbishment, we supply single kits to bulk trade quantities.

  • Expert Technical Guidance: Unsure about primer requirements for your specific existing substrate? Our team provides accurate coverage calculations and technical advice on the spot.

TriRoof HPX Hybrid Polymer Liquid 14 kg

Engineered with an advanced flexible polymer, the TriRoof HPX Overlay System's superior formula provides an incredible 300% elasticity, allowing the continuous, seamless membrane to flex and expand naturally without cracking or tearing over time. Because it forms a single unbroken layer with no joints or seams, it eliminates the most common failure points where leaks typically start. Designed for convenience, it applies straight from the tub onto damp surfaces with zero mixing required. It adheres brilliantly to most roofing substrates (requiring primer only on bitumen and metal) in temperatures from +5°C to +35°C. Once cured, it resists extreme weather from -20°C to +80°C. Plus, its solvent-free, low-VOC formula makes installation safer for both you and the environment.


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HPX Repair Kits Light Grey

The HPX Repair Kit provides a light grey HPX foil and glass to provide an instant patch repair on a flat roof. The patch will be watertight until a full HPX overlay repair can be completed.

Triroof HPX Technical Documents

Get all the product performance data, application guidelines, and safety specs before you start your project

TriRoof Hybrid Polymer HPX

Why Choose Triroof HPX Overlay?

Direct-to-Substrate Application

Eliminate the time, labour, and skip costs of stripping old, failing roofs. Triroof HPX is specifically engineered to bond directly over existing weathered surfaces—including felt, asphalt, concrete, and timber—saving days on-site.

Cold-Applied Safety & Simplicity

  • Zero Hot Works: Completely flame-free application means no gas torches, hot bitumen, or fire permits required.

  • Safe for Occupied Buildings: Low-odour options and cold-applied liquid resin make it ideal for schools, hospitals, offices, and residential properties where disruption must be kept to an absolute minimum.

Monolithic, Seamless Waterproofing

  • Joint-Free Protection: Unlike traditional sheet materials that rely on vulnerable taped or heat-welded joints, HPX cures into a single, continuous, elastomeric membrane.

  • Standing Water Resistant: Excellent resistance to ponding water, making it a dependable choice for low-pitch and complex flat roof details.

  • Reinforced Strength: Used alongside high-grade chopped strand matting for exceptional tear resistance and structural durability.

Complete System In Stock

We carry the full product lineup on our shelves so you can pick up everything required for the job in one visit:

  • Triroof HPX Resins and Topcoats

  • Catalysts and Hardeners

  • Chopped Strand Mat (CSM) Reinforcement

  • Specialized Primers and Substrate Cleaners

  • GRP Trims and Edge Details

Get in touch

Our team are here to help. Get in touch to find out which flat roofing system best suits your project.