Verso VCL100 Vapour Barrier (1.5m x 50m / 75m²) is a high-performance vapour control layer and airtightness membrane imported and supplied throughout New Zealand exclusively by EBuilt Ltd (EProducts NZ Ltd).

Engineered and manufactured in Bielsko-Biała, Poland, by mdm NT—one of Europe’s leading producers of technical building wraps and membranes—Verso VCL100 is specifically designed for the internal lining of high-performance buildings and Passive Houses. Produced under a sustainable zero-waste philosophy that recycles post-production waste to eliminate atmospheric factory emissions, Verso VCL100 provides superior internal moisture management, protecting wall and roof cavity insulation from internal humidity across all New Zealand climate conditions.

Advanced Technical Quality & Material Construction

Verso VCL100 combines high mechanical strength with non-permeable membrane performance:

• Non-Permeable Vapour Control Membrane: Formulated as a non-absorbent, non-permeable barrier that efficiently restricts internal water vapour transmission behind interior wall and roof linings.

• Continuous Airtightness Layer: Functions as an active interior air barrier layer, preventing moisture-laden air leakage into wall and roof cavities to maintain thermal efficiency and structural integrity.

• Physical Profile: Supplied in unfolded 1.5m x 50m rolls covering 75m², engineered for clean and efficient installation across interior timber and steel framing.

Core Performance Benefits

• Passive House & High-Performance Airtightness: Specially designed as an internal airtightness membrane for Passive Homes and energy-efficient builds, stopping unwanted air exfiltration and keeping cavity insulation dry and fully performing.

• Controlled Vapour Diffusion: Prevents internal moisture generated by daily living from diffusing into exterior wall and roof assemblies, eliminating interstitial condensation, structural timber decay, and mould growth behind interior linings.

• Framing & Timber Treatment Compatibility: Suitable for both timber and light steel-framed constructions. Completely unaffected by LOSP-treated timber once solvent chemicals have flashed off (minimum 7 days flash-off period recommended).

• System Sealing Integration: Designed for seamless lap and junction sealing using ViBest Super Pro flashing tape to maintain a 100% airtight and continuous vapour control seal around service penetrations, joins, and framing junctions.

• Building Code Compliance & Safety: Complies with European fire classification EN 13501-1 Class E, and is not subject to any warnings or bans under Section 26 of the New Zealand Building Act 2004 when used within its intended scope.