STEICOmulti renova

moisture vapour variable, vapour control layer

moisture vapour variable vapour contol membrane for renovations

  • Particularly robust and flexible
  • 3-layer, coated PP non-woven fabric, mesh reinforced
  • Highly tear-resistant
  • Moisture variable, Sd-value 0.4-35m
  • suitable for air-injected insulation and insulation batts
  • Suitable for sub and top installation when sufficient insulation covering is provided by STEICO wood fibre sarking boards

Product sheet


Production and designation EN 13984: 2013
Fire class (RTF) according to EN 13501-1 E
Area weight [g/cm²] 100
Temperature resistance [°C] -40 to +80
UV protection in non-installed state 3 Months
Max. tensile force longitudinal ≥ 300
Max. tensile force transverse ≥ 260
Elongation at Max. tensile force longitudinal [%] ≥ 20
Elongation at Max. tensile force transverse [%] ≥ 18
Tear resistance longitudinal [N] ≥ 230
Tear resistance transverse [N] ≥ 230


Length [mm]

Width [mm]

Area/roll [m²] Area/pal. Net [m²] Number/pal. [pcs.]
50000 1500 75 1500,000 20
50000 3000 150 3000,000 20

Processing STEICOmulti renova

  • Lay the membrane or sheet so that the printed side is facing the fitter
  • Lay the sheet parallel or at a right angle to the rafters with an overlap of at least 10 cm
  • Ensure flush-mounted bay insulation, no cavities may exist between the bay insulation and membrane/sheet, visual check due to translucent character of the membrane/sheet
  • Fit the membrane or sheet in a tension-free manner and avoid creases
  • Overlaps, component joints and penetrations must be made in an airtight manner by means of STEICO system accessories
  • Additional mechanical fastening (e.g. battens) must be used immediately after installation to support the weight of the insulation

Processing in case of air-injected insulation:

  • The distance between the clips to be used for fixing the vapour barrier in place on the supporting structure is max. 10 cm
  • The use of STEICO fibreboard strips or an additional lath along the rafter is recommended as an altenative
  • Before the introdution of the air-injected insulation, cross lathing must be arranged with a max. centre distance of 420 mm
  • Once the insulation has beed injected, seal the injection holes in an airtight manner using STEICOmulti tape P stickers

Quickly dissipate increased room humidity (e.g. during the construction phase) via consistent and continuous ventilation. Occasionally airing for short times with wide-open windows does not suffice to quickly convey large quantities of construction-related humidity out of the building; set up a dehumidifier if necessary. A max. relative humidity of 70 % must be complied with during the construction period. To prevent condensation formation, the airtight adhesive bonding of the STEICOmulti renova should be made directly after the installation of the thermal insulation. This applies in particular for work in winter.

(Please refer to the product data sheet for detailed information)

Declaration of performance

System Recommendations

STEICOmulti tape P

High performance tape with kraft paper
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STEICOmulti tape F

High performance tape with special foil
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STEICOmulti connect

solvent free primer
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