FG35 Primer

Fast-drying solvent-based surface primer from Carlisle, specially formulated for use with self-adhesive Resitrix EPDM waterproofing membranes (including SK W Full Bond) and Alutrix vapour barrier membranes. Based on synthetic rubber and resins, FG 35 prepares a wide range of substrates to ensure strong, reliable adhesion of the self-adhesive membrane.

With a typical drying time of around 35 minutes, it is significantly quicker than many alternative primers, helping to speed up installation while delivering a consistent, high-quality bond.

Key Benefits

• Rapid drying – Ready for membrane application in approximately 35 minutes under normal conditions.
• Excellent adhesion promotion – Ensures a durable bond between the substrate and Resitrix self-adhesive membranes.
• Wide substrate compatibility – Suitable for metals, bituminous materials, timber, concrete/masonry, many plastics and most insulation boards (excluding unfaced EPS).
• Easy to apply – Can be applied by sheepskin roller, brush or spray for even coverage.
• Ready to use – No dilution required; simply stir well before application.
• Black colour – Provides clear visual confirmation of coverage.
• Professional performance – Designed specifically for the Resitrix and Alutrix systems.

Typical Specifications

• Base: Synthetic rubber and resins (solvent-containing)
• Colour: Black
• Consistency: Liquid, easy to apply
• Typical consumption: Approx. 200–300 g/m² depending on substrate and application method
• Application temperature: +5 °C to +35 °C
• Available sizes: Common pack sizes include 4 kg / 4.5 L and 12.5 kg containers

Suitable Substrates

• Uncoated metals
• Bituminous surfaces
• Timber and timber-based boards
• Concrete, blockwork and masonry
• Compatible insulation boards
• Many plastics (excluding soft PVC)

Ideal for use prior to installing Resitrix SK W Full Bond and other self-adhesive Resitrix membranes. A essential system component for achieving reliable, long-term adhesion on flat roof and green roof projects.

Always ensure the substrate is dry, clean, frost-free, dust-free and grease-free before application. Stir thoroughly and apply thinly and evenly. Allow the primer to become touch-dry before installing the membrane. Follow Carlisle Resitrix installation guidelines and observe all Health & Safety precautions when using solvent-based products.