IZOtite One Way Tape – External Window & Door Sealing Seal window and door openings from the external face with confidence. IZOtite One Way Tape creates a reliable moisture barrier that keeps water out while allowing vapour to escape — suitable for ICF, timber frame, and block-built projects across Ireland. Why contractors choose IZOtite One Way Tape: One-way moisture control: Blocks liquid water ingress while remaining vapour-open — critical for airtight builds. UV resistant: Maintains performance for up to 12 months of UV exposure during construction. EPS-compatible: Bonds directly to EPS insulation for a seamless, gap-free seal. 20/80 split backing: Controlled, clean application with no misalignment — saves time on site. Versatile substrate adhesion: Adheres to timber, concrete, PVC, and EPS surfaces. Typical applications: External face sealing of window and door reveals ICF window sealing Timber frame window installation — external membrane lap Block-built reveals prior to window fitting PRODUCT DETAILS Roll width: 100 mm Roll length: 20 m Backing division: 20/80 UV resistance: 12 months Coverage: approx. 20 linear metres per roll
