External Insulation Board System- Multitherm

A wood fibre insulation board used in timber frame construction.

A wood fibre insulation board used in timber frame construction.

Planning a visit?
You will find this material in: Cabinet F

Geographic availability
Origin / Location of manufacturing / Processing plant
Application and typical uses of the product

Multitherm is mostly fixed to the external face of timber frame walls (sometimes used internally) in order to provide enhanced insulation values, reduced thermal bridging and ensuring that the external side of the wall is moisture vapour diffusion open (breathable). The Multitherm is always applied with a cavity and cladding externally. Multitherm is also used extensively in Cross Laminated Construction (CLT)

Breakdown of Product

Wood fibre insulation board. Manufactured from untreated Black Forest spruce and fir.
Binding agent: 4% polyurethane resin, Hydrophobizing agent: 1.0% paraffin

Embodied energy (Processing plant emissions). How much energy is used to produce the product? kWh per annum or kgCO2
Refer to the Gutex Environmental Product Declaration in accordance with EN15804 and ISO 14025
Thermal conductivity (k) W/m°C or Thermal transmittance (U-value) - W/m2°C (If applicable)
k = 0.040 W/m°C (approx)
Is the resource Renewable or Finite?
Does the material need to be processed further or treated by the user
Should be installed by an experienced contractor
Buildability - how complex is installation? What skill level is required?
Multitherm is fairly straightforward to install once some experience has been gained. The critical areas are ensuring they boards are screwed correctly to the timber frame (correct screws and fixing pattern) and the joints are aligned correctly. Screw calculations are provided by Ecological
Disposal/ End of Life

No special landfill requirements

Types, textures, specifications and colours currently available
1 type available, but supplied in a range of thicknesses
Supplier Name
Ecological Building Systems UK Ltd
Main Contact
Penny Randell
Contact Address
The F Brown Building, Cardewlees, Carlisle, CA5 6LF
Telephone Number
01228 711511
Is this product certified?

Yes: EN13171 (DoP: GX-01-0025-01

Lifespan of materials if maintained correctly (years)

Minimum 60 years

Availability - how easy is it to source the material

Readily Available