TargoVARIVAP S is a reinforced, variable high-performance vapor barrier membrane
For controlled vapor diffusion in roof and wall constructions. Thanks to the VARIVAP effect, the membrane adapts its diffusion resistance to ambient humidity.
- Winter: higher Sd value reduces moisture penetration into the construction
- Summer: lower Sd value allows stored moisture to dry out quickly and safely
The TargoVARIVAP S version is the reinforced design and is therefore also suitable for blown-in insulation materials.
Installation Notes
For a permanently functional construction, airtight installation is essential. The membrane should be laid without wrinkles and mechanically fixed, for example by stapling.
Basic installation rules (interior):
- Install parallel to the eaves or rafters, with overlaps on the rafter when installed along rafters
- Smooth side facing inward, minimum overlap 10 cm
- Seal overlaps, connections, and penetrations airtight using products from the Targo adhesive system
Sealing / Bonding (system recommendation):
- Seal overlaps airtight with TargoRAPID
- Seal connections with TargoFIX SK, a permanently elastic cartridge adhesive
- Seal penetrations such as pipes or ventilation ducts with TargoFlex
- For exterior applications and details, the system also uses TargoBENDIX, TargoND tape, and TargoFIX SK
Benefits
- Humidity-variable, Sd 0.2–20 m, protects in winter and dries in summer
- Reinforced version, also suitable for blown-in insulation materials
- High drying reserve for greater building safety
- Easy installation, saves time and cost
- System warranty with proven Targo adhesive products
Technical Data
| Type | humidity-variable vapor barrier, reinforced version |
| Sd value (humidity-variable) | 0.2–20 m |
| Basis weight | 90 g/m² |
| Thickness | 0.20 mm |
| Maximum tensile force | longitudinal/transverse 210/190 N/5 cm |
| Elongation | longitudinal/transverse 30/25 % |
| Reaction to fire | E |
| Outdoor exposure | 1 month |
| Water tightness / ageing | passed |
| Roll size / Area | 1.5 m × 50 m = 75 m² |
| Roll weight | 7.3 kg |
Download
Product information PDF
Installation guide PDF
Data sheet PDF
