125mu (500G) Green Vapour Barrier 4m x 50m (200m2/Roll)

Green Vapour Barrier sheeting with a 4m width and 50m length is a polyethylene moisture-blocking membrane designed to prevent the passage of internal water vapour into colder areas of the building fabric. Its 125mu (500-gauge) thickness provides high vapour resistance for protecting insulation, structural layers, and internal finishes. The membrane functions as a complete vapour and air barrier, positioned on the warm side of insulation to stop moisture-laden indoor air from reaching cold surfaces where condensation could occur. By preventing interstitial condensation, it protects against mould growth, damp staining, and deterioration of insulation materials, supporting long-term structural integrity.Its durable polymer construction ensures stable performance across wall, floor, and ceiling applications in both residential and commercial environments.The barrier also contributes to improved thermal performance by maintaining the insulation’s effectiveness and reducing associated heat-loss pathways.