ThermRite™ PRO Adhesive – 500ml Contact Spray for Bonding EPS UFH Panels

The ThermRite™ PRO Adhesive – 500ml (MPN TRPROAdh-500) is a high-performance contact spray adhesive formulated specifically for bonding ThermRite PRO EPS underfloor heating panels to suitable subfloors.

Product Description

This extremely tacky, fast-grab spray adhesive is free from chlorinated solvents and is tested and approved for securing ThermRite PRO EPS panels to both timber and concrete screed substrates. Supplied in a 500ml aerosol can, it offers quick, clean application with no mixing, making it ideal for rapid installation of low-profile underfloor heating systems.

Key Features

• Purpose-made formulation: Designed specifically for ThermRite PRO EPS overlay panels.
• High tack contact bond: Provides rapid, strong adhesion for stable panel fixing.
• Solvent system: Extremely tacky spray adhesive free from all chlorinated solvents.
• Substrate compatibility: Approved for use on wood and concrete screed floors that are sound, clean, and dry.
• Coverage rate: Approximately 1 x 500ml can per 5m² of ThermRite PRO panels (depending on application and surface porosity).
• Application method: Aerosol spray for even, controlled coverage and minimal waste.

Technical Details

• Product type: Contact spray adhesive for EPS underfloor heating panels.
• Pack size: 500ml aerosol can.
• Colour: Clear or light-coloured adhesive film (non-staining on typical subfloors).
• Open time: Short to medium; panels should be positioned while adhesive remains tacky (follow label instructions).
• Subfloors: Suitable for sound concrete screeds, sand/cement, and fixed floor-grade plywood/OSB (minimum 18mm recommended).

Usage & Applications

• Bonding ThermRite PRO EPS panels to solid screed floors as part of a low-profile wet underfloor heating build-up.
• Fixing ThermRite PRO boards to timber deck floors (plywood/OSB) prior to pipe installation and levelling compounds.
• Use as an alternative to cement-based tile adhesives where a rapid, clean, dry bonding method is preferred.

Installation Notes

• Ensure subfloors are structurally sound, clean, dry, and free from dust, grease, or loose material.
• Shake can thoroughly before use and apply an even spray to both the underside of the ThermRite PRO panels and the subfloor, as per manufacturer instructions.
• Allow the adhesive to become tacky (contact adhesive method), then place and firmly press panels into position.
• Observe all safety guidance regarding ventilation, PPE, and ignition sources when using solvent-based spray adhesives.