
£62.41
Roofer’s No.1 VCL is a self-adhesive bituminous vapour control layer that provides a strong, reliable barrier against vapour and gases in flat roofing systems. Reinforced with a composite aluminium foil and glass-fibre mat, this premium-grade membrane offers exceptional durability, puncture resistance, and vapour tightness — ideal for both commercial and residential applications.
The Roofer’s No.1 VCL is a high-performance, cold-applied vapour control layer designed to prevent the passage of moisture vapour into the roofing system. Manufactured from a self-adhesive bituminous compound, reinforced with composite aluminium foil and glass-fibre mat, it delivers outstanding tear and puncture resistance while maintaining flexibility for easy installation.
The polyester-coated upper surface provides a secure bonding surface for most polyurethane liquid waterproofing systems and adhesives. Its exceptionally high vapour resistance makes it suitable for buildings with high humidity and demanding internal environments such as swimming pools, sports halls, kitchens, and wet industrial areas.
Installation is quick and flame-free, with no need for hot works — ideal for projects requiring safe and efficient application on substrates such as concrete, plywood/OSB, and metal decking. When used on profiled metal decks, the integral strength of the membrane resists foot traffic and mechanical stress.
Suitable for:
Flat roofs in new build and refurbishment projects
High humidity environments such as pools, kitchens, and industrial buildings
Compatible with:
Concrete, plywood/OSB, and metal decks
Recommended for use with Roofer’s No.1 VCL Primer to enhance adhesion
Product Name: Roofer’s No.1 VCL
Type: Self-adhesive bituminous vapour control membrane
Reinforcement: Composite aluminium foil with glass-fibre mat
Top Surface: Polyester-coated foil
Application Method: Cold-applied, self-adhesive
Vapour Resistance: Exceptionally high
Puncture Resistance: Excellent
Tear Resistance: High
Temperature Range: +5 °C and above
Compatible Primer: Roofer’s No.1 VCL Primer
Available Size: 11 m x 915 mm

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.
