From £128.57 + VAT per 50m x 1.5m roll

Variable vapour control membrane – Rothoblaas Clima Control 80 – 1.5m x 50m

Rothoblaas Clima Control 80 variable vapour control layer is:-

Gallery
Rothoblaas Clima Control 80 2_clipped_rev_1 CLIMA CONTROL 80-1750343226 CLIMA_CONTROL_80_RA1-1614679899

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Product overview

Where is it used?

  • Rothoblaas Clima Control 80 can be used on the underside of unventilated flat roof constructions, to ensure the whole structure stays dry.
  • Within the NatureWall internal Wall Insulation system as the vapour control and airtightness layer.Nail Sealing Tape – Ampacoll ND Duo – 60mm x 30m

How is it used?

  • The Clima Control 80 variable vapour control membrane can be bonded, using Ampacoll DT double sided tape or Ampacoll ND Duo nail seal tape, to the underside of rafters or the inside of timber studs prior to being boarded over or counter battened.
  • If using on the inside surface of wood fibre insulation boards, apply Ampacoll Primax primer and Ampacoll DT double sided tape to the surface at regular intervals to allow the membrane to be bonded to the surface.
  • Once each row of membrane is in place, simply tape the joints with Ampacoll INT airtightness tape.
  • All joints should overlap by at least 100mm and the perimeter should be sealed with Ampacoll Fenax tape or Ampacoll Profix adhesive, prior to counter battening or being over boarded with plaster board.
  • Once the joints are taped it forms an air tight, moisture regulating layer.

How much will you need?

Each roll of Rothoblaas Clima Control 80 variable vapour control membrane is 50m long and 1.5m wide. It covers an area of 70m2 accounting for overlaps.

Frequently asked questions

Do I need to tape the joints?

Yes, you should always tape the laps, usually with the Ampacoll INT or the XT tape. This ensures the air tightness of the membrane and that it functions correctly to reduce moisture flow through the walls from the interior.

Is a variable vapour control layer better than a fixed value one?

Not necessarily, different membranes are suitable for different applications. These membranes open up at high humidity levels to allow moisture to come back into the building. This function is not always necessary or desirable.

What are its properties?

The tabulated µ-values describe a curve which has been fitted to cup measurements performed by Eurac Research, Bolzano (Test report 20/004/1). No µ-values have been measured in the interval between 93% and 100% RH, the table assumes constant
µ-values between the last fitted table entry and 100%.

Reproducibility of the measurements:
3% – 50.5% RH: measured: 4200, WUFI: 4199
32.9% – 49.4% RH: measured: 4020, WUFI: 4017
32.9% – 65.9% RH: measured: 2770, WUFI:2771
32.9% – 80.5% RH: measured: 1630, WUFI: 1630
50.4% – 75.4% RH: measured: 1520, WUFI: 1520
49.4% – 93% RH: measured: 770, WUFI: 723
65.9% – 93% RH: measured: 460, WUFI: 517

Manufacturer’s notes:
Characteristics:
– Mass per unit area (g/m2) : 80
– Water-vapour transmission (Sd) (m) : 0,15-5
– Maximum tensile force MD/CD (N/50mm) : >120/90
– Elongation MD/CD (%) : >50/50
– Resistance to nail tearing MD/CD (N) : >40/40
– Watertightness (class) : conform

Pricing & shipping

This product is on a 1.5m long roll and will be sent by courier, costing around £20 + VAT

Roll length [m]Roll width [m]Roll Area [m²]Membrane weight [g/m²]Roll weight [kg]Sd value [m]Single roll cost [£]3+ rolls [each]
501.5758060.15 – 5m£142.86£128.57

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We’d like to hear from you. Call us on 01392 861763 or email us at justask@backtoearth.co.uk with any questions or comments.

If you can’t seem to find what you need on our website or you have large quantities of materials to purchase please contact us for a chat and we’ll offer you a more bespoke solution.

We’re normally open from 8.30 am to 5 pm Monday to Thursday, and 8.30 am to 1pm on Friday.

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