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 Series | VWFAHP Series |
| Product Type | Acrylic breathable tape / external window sealing tape |
| Material | Acrylic |
| Typical Application Style | European low-energy window installation |
| Primary Function | Exterior airtightness, water resistance, and outward vapor diffusion |
| Model | Specification | Package |
|---|---|---|
| VWFAHP-10023 | 0.10 m × 23 m | 6 rolls / ctn |
| VWFAHP-12023 | 0.12 m × 23 m | 5 rolls / ctn |
| VWFAHP-15023 | 0.15 m × 23 m | 4 rolls / ctn |
| VWFAHP-20023 | 0.20 m × 23 m | 3 rolls / ctn |
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
| Test Item | Standard / Method | Condition / Requirement | Test Result |
|---|---|---|---|
| Material | - | - | Acrylic |
| Basis Weight | - | - | ≥ 200 g/m² |
| Thickness | GB/T 328.5 (Ref. ASTM D3652) | - | ≥ 0.5 mm |
| Tensile Strength | GB 23441 (Ref. EN 12311-2) | - | MD: ≥ 450 N/50 mm; CD: ≥ 130 N/50 mm |
| Elongation at Break | GB 23441 (Ref. EN 12311-2) | - | MD: ≥ 20%; CD: ≥ 80% |
| 180° Peel Adhesion to Aluminum Plate | GB/T 2792-2014 | Room temperature / 80°C / -40°C | ≥ 0.4 / ≥ 0.4 / ≥ 0.4 N/mm |
| 180° Peel Adhesion to OSB Board | GB/T 2792-2014 | Room temperature / 80°C / -40°C | ≥ 0.4 / ≥ 0.4 / ≥ 0.4 N/mm |
| 180° Peel Adhesion to MgO Board | GB/T 2792-2014 | Room temperature / 80°C / -40°C | ≥ 0.4 / ≥ 0.4 / ≥ 0.4 N/mm |
| Water Resistance | GB/T 328.10 | 100 cm hydrostatic head, 2 h | No leakage |
| Water Vapor Resistance / Sd Value | GB/T 17146 (Ref. EN 1931) | - | Sd ≤ 0.25 m |
