New: Thermo Spruce



Our Thermo Spruce timber cladding and decking are produced from high-quality Scandinavian Spruce.

Due to the harsh climate of Scandinavia and the extreme weather conditions, the wood grows in particularly fine annual rings and thus a product of the highest quality is provided - which will last for decades to come.

The wood comes 100% from PEFC-certified forests in Finland.  

Find Osmo dealers near you

Modern detached house with Osmo thermowood spruce timber cladding


Through a special treatment with heat and steam, the Spruce wood gains completely new strengths. It develops properties similar to hardwood; it becomes extremely resistant and extremely dimensionally stable.

At the same time, the wood remains completely harmless to health, because no chemicals are used in the treatment.

These strong qualities make Osmo Thermo Spruce a real hero in our range - Spruce in top form.


Osmo Thermo Spruce as decking - it is resistant to mould and fungal attack


  • Durability
  • Improved dimensional stability
  • Durability class 2 (durable)
  • 100 % sustainable
  • 100 % recyclable
  • Free of chemicals
  • Resistant to mould and fungal attack due to thermal treatment
  • Hairline cracks, peeling and splintering possible on the surface
  • Colour differences emphasise the natural character


Our surfaces for Thermo Spruce

For our Thermo Spruce timber decking, you can choose from various surfaces.

Technical Information & Installation

Suitable accessories for installing Osmo Thermo Wood Pine decking

Here you can find our accessories developed specifically for Thermowood.

Thermo accessories

A selection of Osmo wood product catalogues

All videos, technical information, catalogues and brochures can be found in our media library... 

Media Library

This could also interest you