Novia® STRP Pro Vapour Barrier

For use in insulated wall, roof and floor applications, including warm flat roofs where high concentrations of moisture vapour need to be controlled.


Novia® STRP Pro is a premium specification reinforced and foil laminated polythene vapour-control membrane. It is particularly suitable for use in metal profile clad industrial buildings, the education sector and commercial properties, however it can be used in any insulated building construction. To ensure an airtight seal, the product must be professionally installed in conjunction with the two tape sealing system.


  • Air-leak barrier and vapour control layer (AVCL).
  • Offers improved R-value when installed facing a minimum 25 mm air gap, due to a reflective surface.
  • Suitable for use in commercial cladding systems.
  • Complies with BS EN 13984.
  • Tough, tear-resistant reinforced multilayer polythene laminate with an aluminium foil core.
  • Low vapour permeability.
  • Minimizes interstitial condensation.
  • Improves the insulation performance.
  • Helps buildings meet the requirements of BS EN 5250:2011.
  • Installed with Novia® two tape sealing system.
  • Suitable for use with Novia® breather membranes.
  • CE marked and CPR compliant. Declaration of Performance available on request.


  • For professional installation, all Novia® VCL products should be 100% fully sealed to the structure using a Novia® double-sided butyl tape and one of the foil or BOPP lap tapes. The wider the tape used, the stronger the final seal will be and the easier it will be to install.
  • Novia® recommends the 30 mm wide butyl tape and 60 mm metallized BOPP tape for all standard VCL installations.

General information


Foil polythene



Foil backed



Foil laminated polythene



1.6 x 50 m

Uniclass 2015

Pr_25_57_65_60 Plastics sheetsPrimary


H20/150 Sheet cladding

H30/261 Air and vapour control membrane

H30/30 Air and vapour control membrane

H31/261 Air and vapour control membrane

H31/45 Air and vapour control membrane

H92/780 Air and vapour control layer

J21/395 Air and vapour control layer

J31/330 Vapour control layer

J41/395 Air and vapour control layer

J42/395 Air and vapour control layer

K10/155 Wall lining system (metal studs)

K11/115 Battened plywood floating floor

K11/125 Battened particleboard floating floor

K11/135 Battened oriented strand board floating floor

K11/145 Battened cement-bonded particleboard floating floor

K11/215 Plywood floating floor

K11/225 Particleboard floating floor

K11/235 Oriented strand board floating floor

K11/245 Cement bonded particleboard floating floor

K11/795 Wall lining on metal framing

K21/110 Wood flooring

K21/111 Wood floating floor

K21/115 Wood laminate flooring

K21/120 Battened wood flooring

K21/130 Battened wood floating floor

K21/140 Battened wood laminate flooring

K21/145 Composite laminate flooring

K21/146 Laminate flooring

P10/310 Air and vapour control layer

P10/60 Air and vapour control layer fixed to studs/ joists/ framing

Specification data - Plastics sheets Enhanced data


Foil laminated polythene vapour control membrane.


EN 13984.

Performance characteristics


Tensile strength (minimum)

(MD/CD): 345/250 N/50 mm.

Tear resistance

(MD/CD): 130/240 N.

Elongation to break

(MD/CD): 25/20%.

Water vapour resistance (minimum)

20 000 MNs/g.

Physical properties


Weight (minimum)

314 g/m².



Width (minimum)

1.6 m.

Roll length (minimum)

50 m.

Product Reference

Novia® STRP Pro Vapour Barrier

Water vapour permeability

in sd: 4000 m.


Novia® metallized BOPP and Novia® double sided butyl tapes.

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