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Exterior Cladding
last modified 01.06.2021

Finnforest Thermowood®


Finnforest Thermowood®
is steam heated in a kiln to drive out moisture and resin. It is 50 % more stable than untreated softwood. It suffers less shrinkage, swelling, and distortion in response to atmospheric changes. It is easy to work with, lightweight and there’s no necessity to re-treat cut ends and drill holes. Suitable for interior and exterior use.



T&G Shiplap

Channel Cladding

PMV Cladding

Tapered Cladding


Thermowood Standard Cladding Components - To Order




Metric Size (mm)

per metre

0250FTW0010T&G Shiplap Smooth Finish25 x 125P.O.A.
0250FTW0020T&G Shiplap Textured Finish25 x 125P.O.A.
0250FTW0100Battening Cornering Timber21 x 92P.O.A.
0250FTW1120Battening Cornering Timber42 x 42 P.O.A.

Alloway Timber also supplies Siberian Larch, this is a sustainable old-growth timber that has been used in construction for centuries. Its popularity lies in the fact that it is aesthetically beautiful, naturally durable and long lasting. Architects specify Siberian Larch for a variety residential and commercial applications including schools, museums, stadiums and bridges.
Tongue and groove, shiplap, larch cladding are some of the styles available to order.

Alloway Timber can also source Cedar TGV or shiplap profiles for external cladding. This durable timber is well known for its high resistance to decay and its low maintenance characteristics, a favorite for sheds, cladding,decking and roof shingles. - Prices on application.


All Products above that are PEFCI are 70% PEFC Certified
All Products above that are PEFC2 are 100% PEFC Certified

For more product information, click here to contact us

Prices in red denote promotional price. All prices exclude VAT at current rate and are subject to change and withdrawal without prior notice. Prices correct as per modified date shown at top of page. All goods supplied in nominal size or approximate weight only. Due to online limitations colours may vary slightly from actual item supplied. Images in this site are not to scale. Information within this site is given for the purpose of general guidance only and is not intended to be advice on any particular application or to be relied on as statements or representations of fact. © 2009 All rights reserved. Back to Top

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