Aluthermo RoofReflex®

Aluthermo RoofReflex®

Novia Ltd Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

Insulated roof and wall breather underlay membrane.

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Suitable for use as an insulating breather membrane.


An insulated roof and wall underlay membrane that is airtight and ventilated. When used in conjunction with standard insulation products, the product enhances U-values through an integrated insulation layer that is laminated to a high emissivity surface.

Manufactured using hydrophobic and self-extinguishing polyester fibre created from recycled material. Aluthermo RoofReflex® has integrated sealing tapes to maintain the airtight seal at all joints. Suitable for use below tiles and cladding.

Features and benefits:

  • Low emissivity external face.
  • Improved acoustic values.
  • Reduces thermal bridge losses.
  • Airtight when installed with the supplied integral tapes.
  • Reduces overheating in summer by providing a cooling effect and lowers air-conditioning costs.
  • Adds up to 1.47 m²K/W in thermal resistance (R-value).
  • Hybrid roof and wall membrane combined with an insulation layer.
  • Lower installation costs than PIR systems.
  • EPC-approved and LABC-approved.
  • CE-marked to EN 13859-1 and -2.
  • Ten-year warranty.

General information








Non-woven and recycled PE insulation



(w x l x d)

1.4 x 10 x 0.0037 m


Ten years

Uniclass 2015

Pr_25_57_10_94 Vapour permeable sheetsPrimary


H20/150 Sheet cladding

H20/155 Sheet cladding

H21/110 Vertical timber weatherboarding

H21/111 Horizontal timber weatherboarding

H21/115 Vertical timber weatherboarding

H21/116 Horizontal timber weatherboarding

H21/130 Breather membrane

H21/20 Breather membrane

H30/110 Fibre cement

H30/120 Fibre cement

H30/350 Breather membrane

H30/50 Breather membrane

H31/280 Breather membrane

H31/55 Breather membrane

H60/105 Clay roof tiling

H60/110 Clay roof tiling with counterbattens

H60/120 Concrete roof tiling

H60/125 Concrete roof tiling with counterbattens

H60/145 Clay vertical tiling

H60/155 Concrete vertical tiling

H61/105 Roof slating

H61/110 Roof slating with counterbattens

H61/120 Vertical slating

H62/105 Roof slating

H62/110 Roof slating with counterbattens

H62/120 Vertical slating

H62/125 Roof slating

H62/130 Roof slating with counterbattens

H62/140 Vertical slating

H62/145 Roof slating

H62/150 Roof slating with counterbattens

H64/110 Wood shingle/ shake roofing

H64/120 Wood shingle/ shake roofing with counterbattens

H64/130 Vertical wood shingle/ shakes

H65/105 Clay roof tiling

H65/110 Clay roof tiling with counterbattens

H65/115 Concrete roof tiling

H65/120 Concrete roof tiling with counterbattens

H65/125 Reconstituted slate roof tiling

H65/130 Reconstituted slate roof tiling with counterbattens

H65/135 Ceramic slate roof tiling

H65/140 Ceramic slate roof tiling with counterbattens

H67/110 Metal roof tiling

H67/120 Metal roof tiling with counterbattens

H67/130 Metal vertical tiling

H92/120 Rainscreen cladding

K21/111 Wood floating floor

M30/265 Building paper

P10/320 Breather membrane

P10/65 Breather membrane

Specification data - Vapour permeable sheets Enhanced data


To BS EN 13859-1.

To BS EN 13859-2.

Third-party certification

CE-marked to EN 13859-1 and -2.

Weight (minimum)

730 g/m².

Reflective face


Product Reference

Aluthermo RoofReflex®


Thickness (minimum).

Surface area per roll

14 m².

Operating temperature range

-40 to 80°C.

Fire resistance classification


Thermal core resistance (R-value)

1 m²K/W.


0.0366 W/m·K to EN 12667.

Thermal resistance together with one unventilated air gap, wall (R-value)

1.47 m²K/W.

Resistance to water penetration

W1 to EN 1928.

Water vapour transmission

380 g/m².

Tensile property, longitudinal

220–360 N/50mm.

Tensile property, traversal

150–275 N/50mm to EN 12311-1.

Resistance to tearing, longitudinal

120–230 N.

Resistance to tearing, traversal

175–280 N to EN 12310-1

Standard deviation (Sd) value

<0.061 m (±0.01) to EN 12572:2003.



Resistance to air penetration

0.000 m³/m³ to EN 12114.


Novia Breather Membrane Lap Tape.

Environmental information

Country of material origin


Recycled content

Hydrophobic and self-extinguishing polyester fibre

Third party certifications
  • LABC Approved: EW531B
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