TriRoof HPX & MultiFlex Paste Tube Catalyst 50g

Prepare your substrate for maximum performance with TriRoof HPX Primer – the essential companion to the TriRoof HPX Hybrid Polymer Waterproof Membrane.

Specially formulated for use when overlaying existing flat roofs or preparing new substrates, this high-performance primer seals problematic surfaces and creates the ideal base for a long-lasting HPX system. Simply mix with the included BPO catalyst and apply for reliable adhesion and protection.

Why Choose TriRoof HPX Primer?

• Seals problematic substrates – Ideal for bitumen, asphalt, concrete and other challenging surfaces before applying HPX.
• No need to strip back – Suitable for both existing roofs and new roofs.
• Excellent low-temperature cure – Performs reliably even in cooler conditions.
• Fast curing – Tack-free in 40–60 minutes; walk-on time of approximately 60 minutes.
• Fire tested – Rated to BS 476-3 (F.AA) and EN 13501-5.
• Long-term protection – Helps maximise the durability and guarantee potential of your HPX system (required for full 20-year options on certain substrates).
• Easy application – Mix with the supplied catalyst and apply by roller or brush.
• Coverage – Approximately 8–12 m² per 5 kg tin (depending on substrate porosity).

Important: Must be applied to a clean, dry surface. Catalyst cure is required – follow the dosage guidelines on the tin (typically 2–4% depending on temperature).

Whether you’re a professional contractor or experienced DIYer, TriRoof HPX Primer ensures optimal adhesion and system performance, especially on asphalt, bitumen or untested substrates. Pair it with TriRoof HPX membrane for a complete, high-performance waterproofing solution.

Always follow the manufacturer’s installation instructions and technical data for best results and guarantee validity.