VWFAIB Series Acrylic Vapor Barrier Tape is a high-strength acrylic sealing tape designed for the interior side of window and door openings in low-energy and highly airtight building envelopes. It provides a high vapor-resistance layer to help limit indoor moisture vapor transmission into the wall assembly.
As an internal vapor barrier sealing tape, VWFAIB helps protect insulation layers and structural components from condensation-related damage. It supports airtight detailing around window and door frames and is suitable for European low-energy window installation methods where the interior side requires reliable vapor control and air sealing.
| Product Series | VWFAIB Series |
| Product Type | Acrylic vapor barrier tape / internal window sealing tape |
| Material | Acrylic |
| Typical Application Style | European low-energy window installation |
| Primary Function | Interior vapor control, airtightness, and condensation-risk reduction |
| Model | Specification | Package |
|---|---|---|
| VWFAIB-10023 | 0.10 m × 23 m | 6 rolls / ctn |
| VWFAIB-12023 | 0.12 m × 23 m | 5 rolls / ctn |
| VWFAIB-15023 | 0.15 m × 23 m | 4 rolls / ctn |
| VWFAIB-20023 | 0.20 m × 23 m | 3 rolls / ctn |
High-strength acrylic tape for interior vapor barrier sealing
Helps reduce indoor moisture vapor diffusion into wall cavities
Improves airtightness around window and door frame transitions
Helps protect insulation and structural components from condensation risk
Suitable for European low-energy and highly airtight building designs
| Test Item | Standard / Method | Condition / Requirement | Test Result |
|---|---|---|---|
| Material | - | - | Acrylic |
| Basis Weight | - | - | ≥ 250 g/m² |
| Thickness | GB/T 328.5 (Ref. ASTM D3652) | - | ≥ 0.5 mm |
| Tensile Strength | GB 23441 (Ref. EN 12311-2) | - | MD: ≥ 500 N/50 mm; CD: ≥ 80 N/50 mm |
| 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 ≥ 18 m |
