Alenor M-Band non-woven acrylic tape

ALENOR M-Band is an acrylic installation tape with a non-woven carrier for sealing membrane seams and connections. It is applied over overlaps of vapour-barrier or diffusion membranes and used to connect membranes to concrete, brick, timber, metal and plastic. The acrylic adhesive has very high initial tack and holds well on rough surfaces where ordinary tape comes off.

The non-woven carrier is flexible and easy to fold into corners and around pipes, while its low vapour permeability helps keep the vapour-barrier layer continuous.

Technical data

• Carrier: non-woven fabric, acrylic adhesive
• Colour: black
• Surface density: 130 g/m² (± 10 g/m²)
• Water vapour transmission (WVTR): 0.047 mg/(m²·h·Pa)
• Adhesion to steel: 14 N/25 mm
• UV resistance (direct sun): 3 months
• Service temperature: −40 °C to +100 °C
• Application temperature: +5 °C to +40 °C
• Service life: 10 years; shelf life: 12 months
• Sizes: 50 mm or 60 mm × 25 m

Where to use it

• Vapour-barrier and diffusion membrane seams – covering overlaps in roofs, walls and ceilings.
• Membrane connections – to concrete, brick, timber beams, window and door openings.
• Penetrations – around pipes, cables and ventilation ducts.
• Membrane repair – taping tears and holes.
• Ventilation – sealing duct joints, fixing plastic parts.

M-Band or Duo-Band?

M-Band is applied over a seam or connection and copes well with rough surfaces. Duo-Band double-sided tape works between two surfaces – e.g. inside a membrane overlap. Both are often used together: Duo-Band in the overlap and M-Band over the seam or connection.

How to apply

1. Remove dust from the surface; it must be dry.
2. Prime porous concrete, brick or plaster with Alenor Super-Fix primer first.
3. Position the tape to cover the seam on both sides and remove the release paper gradually.
4. Press firmly along the whole length with a pressure roller, especially on rough surfaces and in corners.

The tape withstands 3 months of direct sun – cover it with finishing after installation.

Frequently asked questions

Is M-Band suitable for vapour-barrier film?
Yes, it is designed for sealing seams and connections of membranes, including vapour-barrier films.

Can it be applied to concrete or brick?
Yes, the acrylic adhesive holds well on rough surfaces. Primer is recommended on porous surfaces.

Which width should I choose?
50 mm is enough for ordinary overlap seams; 60 mm is handier for connections and uneven surfaces.

Read more in the mounting tapes guide. All tapes in the mounting tapes category.

Delivery and wholesale

We deliver to DPD, Omniva and Venipak parcel lockers across Latvia in 2–3 working days and to Lithuania and Estonia in 2–5 working days (delivery terms). Construction companies and resellers get wholesale prices – email [email protected] or call +371 28348301.