PAVAFIX Airtightness Tape (60, 20/40, 150)
£29.25 – £65.46Price range: £29.25 through £65.46
Acrylic adhesive airtightness tape for sealing internal OSB/ply or membrane. Can be used externally when sheltered. Black in colour.
• Can be torn by hand
• Stable shape, the tape cannot be over-stretched
• High adhesive force
Application – For quick, durable, and airtight taping of overlapping’s and connections of internal membranes and for the taping of timber board joints (OSB/ply etc.). Very high adhesive power and excellent UV-, ageing- and water-resistance. When glueing on wood fibre boards and other porous or mineral contact areas, a prime coat is carried out with PAVABASE or PAVAPRIM.
Storage – Cool and Dry
TECHNICAL DATA
Material – Pure acrylic adhesive on a plastic carrier
Thickness (mm) – 0.3
Minimum installation temperature – for base and air [℃] -5, Only with PAVAPRIM [℃] -10
Installation Temperature – Tape [℃] 0 to +40
Temperature Resistance [℃] -40 to +90
| Box Weight [kg] | Roll Length [m] | Roll Width [mm] | Box Contains [units] | Uses | |
|---|---|---|---|---|---|
| Pavafix 60 | 2.8 | 25 | 60 | 4 | Flat Joints |
| Pavatape 20-40 | 2.8 | 25 | 60 | 4 | Corners |
| Pavafix 150 | 3.2 | 25 | 150 | 2 | All Purpose |
| Width | 60mm, 20/40mm, 150mm |
|---|
FAQs
PAVAFIX Airtightness Tapes FAQs
What is PAVAFIX?
PAVAFIX is a high-performance acrylic adhesive tape used for sealing PAVATEX membranes and wood-fibre boards to provide airtightness in building assemblies. It is suitable for both internal and sheltered external applications.
What different formats are the PAVAFIX tapes available in?
PAVAFIX 60 is a general-purpose airtightness tape and is the most commonly used option on site.
PAVAFIX 20/40 is a split-release backing tape designed specifically for awkward or concealed junctions.
PAVAFIX 150 is a 150mm wide airtightness tape with a split back, intended for larger or less regular junctions.
What does PAVAFIX do?
PAVAFIX tapes creates a durable, airtight and weather-resistant seal on overlaps, board joints and membrane connections. It improves overall airtightness and helps prevent draughts and heat loss from building envelopes.
Where can PAVAFIX be used?
What is PAVAFIX 60 is typically used for:
• Sealing overlaps in airtight or vapour control membranes
• Connecting membranes to timber substrates such as rafters, studs, OSB and plywood
• Taping joints between wood fibre boards
• General airtightness detailing where a standard width tape is suitable
PAVAFIX 60 offers a good balance between coverage and flexibility, making it ideal for day-to-day airtightness work.
PAVAFIX 20/40 is best used for:
• Sealing membranes to window and door frames
• Airtight connections at reveals and corners
• Junctions where one side of the tape must be fixed first, with the second side bonded later
• Tight or complex details where standard tapes are difficult to apply
The split backing allows controlled installation and helps achieve a neat, continuous airtight seal around openings.
PAVAFIX 150 used for?
• Sealing membranes to uneven or rough substrates such as masonry, stone or concrete
• Bridging wider gaps or movement joints
• Connecting membranes to floors, ceilings or structural elements
• Situations where extra bonding area is needed for long-term durability
The increased width provides greater tolerance and security where surfaces are not perfectly flat.
What are the main features of PAVAFIX Tapes?
PAVAFIX has:
• A pure acrylic adhesive on a plastic carrier
• Excellent adhesion and shape stability
• High resistance to ageing, UV exposure and moisture
• Hand-tearable design for ease of use
• Durable performance in a wide range of temperatures.
What are the technical specifications of PAVAFIX tapes?
• Roll length: 25 m
• Roll width: 60 or 150mm
• Thickness: 0.3 mm
• Minimum installation temperature (tape): -5 °C (primer needed below this)
• Temperature resistance: -40 °C to +90 °C
These specifications help ensure consistent performance when sealing membranes and boards.
Do I need a primer with PAVAFIX Tapes?
When applying PAVAFIX to porous or mineral substrates such as wood fibre boards, plaster or concrete, it is recommended to prime the surface with the PAVAPRIM before taping to ensure strong adhesion.
How do I install PAVAFIX Tapes?
To install:
1. Ensure surfaces are clean, dry and dust-free.
2. If required, apply primer and allow it to become touch dry.
3. Align the tape centrally over the joint or overlap.
4. Peel away the backing paper and press the tape down firmly without wrinkles.
5. Use a pressure roller or firm hand pressure to ensure full contact.
Can PAVAFIX be exposed to weather?
Yes. According to the technical data, PAVAFIX can be exposed to weather for extended periods (in some cases up to 12 months), but best results are achieved when it is covered by the final building envelope or finished surface.
Is PAVAFIX 60 environmentally safe?
PAVAFIX 60 does not contain substances that are harmful to health or the environment and complies with recognised health and safety requirements for building products.
How should I store PAVAFIX 60?
Store the tape in a cool, dry place, protected from direct sunlight and moisture to maintain adhesion and product quality until installation.