Finnforest UK Ltd

Finnforest UK Ltd

®

 Registered Trademark

Introduction  Finnforest 
ThermoWood

®

 is produced by heat 

treating Finnish grown European 
redwood (red pine) to temperatures 
in excess of 200°C. During heat 
treatment, chemical and structural 
changes occur within the timber 
which alter and improve some of its 
basic characteristics.

The resulting product is an altogether 
more durable and stable timber, an 
ideal material for use in exposed 
areas such as external wall claddings. 

Durability
The improved durability of Finnforest 
ThermoWood

®

 makes it an 

excellent material to use in the 
production of timber claddings and 
rainscreens. The heat treatment 
process enables the use of 
Scandinavian redwood in areas 
requiring a service life of up to 30 
years without the need for a 
chemical preservative. 

Stability
Finnforest ThermoWood

®

 is more 

stable than untreated softwood. The 
changes that occur within the timber 
during heat treatment make it less 
able to absorb or lose moisture. This 
restriction of moisture movement 
limits any potential for swelling, 
shrinkage or distortion of 
ThermoWood

®

 cladding boards.

Maintenance
Heat treatment removes resin from 
redwood timber. As a result there is 
no resin leakage or "bleed" through 
the surface coatings. The combined 
effect of this together with the 
improved stability can lead to a 
lower maintenance requirement.

Environment
The timber used to produce 
Finnforest ThermoWood

®

 is grown 

in the company's own Finnish forests 
which are fully certified under the 
Finnish Forestry Certification 
System and Pan European 
Forestry Certification. Therefore 
specifiers can be sure Finnforest 
ThermoWood

®

 is sourced from 

well managed and sustainable 
forests. The heat treatment process 
requires no chemical additives. The 
improved performance is achieved 
simply by the controlled application 
of heat and steam.

REFERENCES
Project:  

Tesco, Supermarket    

 (2006)
Location: 

Wick, Scotland

Profile: PMV
Treatment:  Left untreated
Architect:  Ian Burke Associates
Contractor: Barr Contruction

Project:  

Kidbrooke Regeneration  

 (2011)
Location: 

Greenwich, London

Profile: 

Channel (vertical)

Treatment:  Sikkens (ST0322)
Architect:  Carey Jones
Contractor: Berkeley Homes

Project:  

Kaleidoscope (2008)

Location: 

University Press,  

 

 Cambridge
Profile: 

Channel (vertical)

Treatment:  Left untreated
Architect: Grakif
Contractor: Crest Nicholson  

 

 

Eastern Ltd

Project:  

Asda Supermarket    

 (2009)
Location: 

Bootle, Merseyside

Profile: 

PMV untreated  

 

 

(vertically and  

 

 horizontally)
Treatment: Untreated
Architect: AEDAS
Contractor: Bowmer & Kirkland

Project: 

Barnett's Call Centre,  

 

Southport, Lancashire

Machined Face PMV 

Treatment:  Two Coats Sikkens    
 

Cetol BL21, One Coat  

 

Sikkens Cetol BL31    

 

(light oak) 

Architect:  Bradshaw Rowse  

 

 Harker

Standard profiles
Finnforest ThermoWood

®

 is 

available in a variety of finished 
profiles or as profiled planed 
material in sizes up to a maximum 
of 50 x 150 mm.

Finnforest 
Finnforest is one of Europe's leading 
suppliers of timber and timber-based 
construction solutions. Owned by 
some 130,000 private Finnish forest 
owners, the company control the 
forests, harvesting, production and 
distribution of the timber products 
providing an unrivalled chain of 
custody and environmental 
credentials.

Finnforest UK Ltd
Boston Site: 
Old Golf Course, Fishtoft Road, 
Boston 
Lincolnshire PE21 0BJ
Tel:  +44 (0)1205 883835

Grangemouth Site: 
PO Box 9
Grangemouth Sawmills 
Earls Road, Grangemouth 
FK3 8XF
Tel:  +44 (0)1324 502336

Widnes Site: 
Ditton Road
Widnes
Cheshire WA8 0OG
Tel:  +44 (0)151 552870

Website: www.finnforest.co.uk

Contact: Any of the Sales 
offices in Boston, Grangemouth, 
Widnes