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VWFAHP Series - Acrylic Breathable Tape

A vapor-permeable acrylic tape for exterior openings, seams and transitions.

Product Overview

VWFAHP Series Acrylic Breathable Tape is an exterior airtight sealing tape designed for window and door openings in low-energy and high-performance building envelopes. It helps seal structural gaps and joints while allowing essential outward vapor diffusion from the wall assembly.

As an external breathable sealing tape, VWFAHP helps maintain airtightness and weather protection without trapping interstitial moisture. It is suitable for European low-energy window installation methods where the exterior side needs to be water-resistant, vapor-open, and durable.

Product Information

Product SeriesVWFAHP Series
Product TypeAcrylic breathable tape / external window sealing tape
MaterialAcrylic
Typical Application StyleEuropean low-energy window installation
Primary FunctionExterior airtightness, water resistance, and outward vapor diffusion

Available Sizes

ModelSpecificationPackage
VWFAHP-100230.10 m × 23 m6 rolls / ctn
VWFAHP-120230.12 m × 23 m5 rolls / ctn
VWFAHP-150230.15 m × 23 m4 rolls / ctn
VWFAHP-200230.20 m × 23 m3 rolls / ctn

Key Benefits

  • Designed for exterior-side sealing around windows and doors

  • Allows outward vapor diffusion while maintaining airtightness

  • Helps reduce moisture accumulation around opening details

  • Supports European low-energy window installation methods

  • Improves durability of high-performance building envelope joints

Technical Data

Test ItemStandard / MethodCondition / RequirementTest Result
Material--Acrylic
Basis Weight--≥ 200 g/m²
ThicknessGB/T 328.5 (Ref. ASTM D3652)-≥ 0.5 mm
Tensile StrengthGB 23441 (Ref. EN 12311-2)-MD: ≥ 450 N/50 mm; CD: ≥ 130 N/50 mm
Elongation at BreakGB 23441 (Ref. EN 12311-2)-MD: ≥ 20%; CD: ≥ 80%
180° Peel Adhesion to Aluminum PlateGB/T 2792-2014Room temperature / 80°C / -40°C≥ 0.4 / ≥ 0.4 / ≥ 0.4 N/mm
180° Peel Adhesion to OSB BoardGB/T 2792-2014Room temperature / 80°C / -40°C≥ 0.4 / ≥ 0.4 / ≥ 0.4 N/mm
180° Peel Adhesion to MgO BoardGB/T 2792-2014Room temperature / 80°C / -40°C≥ 0.4 / ≥ 0.4 / ≥ 0.4 N/mm
Water ResistanceGB/T 328.10100 cm hydrostatic head, 2 hNo leakage
Water Vapor Resistance / Sd ValueGB/T 17146 (Ref. EN 1931)-Sd ≤ 0.25 m
System Note: For best long-term performance, this product should be used as part of a complete Vantell building envelope moisture management system.

Key Applications

  • Exterior-side sealing around windows and doors
  • European low-energy window installation
  • Exterior breathable window flashing
  • Airtight and vapor-open sealing for building envelope joints
  • Moisture-safe sealing around high-performance window openings