
£12.95
Roofer’s No.1 VCL Spray Primer is a fast-drying, non-flammable SBS resin primer designed to enhance the adhesion of Roofer’s No.1 VCL and other bituminous membranes to porous substrates such as concrete, timber, and OSB. Supplied in a convenient spray format, it allows for quick, even application and excellent bond strength — even in cooler conditions.
The Roofer’s No.1 VCL Spray Primer is formulated using SBS resins and a non-flammable solvent, ensuring superior adhesion and safer on-site handling. It is specifically engineered to prepare porous or dusty substrates prior to the installation of self-adhesive vapour control layers and bituminous roofing membranes, ensuring long-term performance and adhesion integrity.
This spray-applied primer provides even, controlled coverage and is ideal for both small-scale detailing and large flat roof areas. Its rapid drying time enables faster project turnaround while maintaining high bond strength. Effective even at low application temperatures (+5 °C and above), it ensures consistent results year-round.
Designed for use with:
Roofer’s No.1 VCL
Other modified bitumen roofing membranes
Suitable substrates include:
Concrete, timber, OSB, plywood, and metal decks
Product Name: Roofer’s No.1 VCL Spray Primer
Type: SBS resin-based primer
Formulation: Non-flammable solvent
Application Method: Spray-applied
Application Temperature: +5 °C and above
Drying Time: Typically within 20–30 minutes
Coverage (750ml): Approx. 8 m²
Colour: Red
Pack Size: 750 ml aerosol can
Compatibility: Roofer’s No.1 VCL and modified bitumen membranes

Roofer's No.1 offers a growing range of flat roofing essentials designed for practical use and dependable performance. From VCL systems and primers to all-in-one kits, these products are made to deliver results on-site without compromise.
