Co2 Larch ® Helping you to Help our Planet

Co2 Larch®
Premium Shadow Gap Information & Pricing
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Co2 Larch ® Shiplap Diagram
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Co2 Larch  ® ptgv cladding
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Co2 Larch® PAR cladding boards
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Co2 Larch ® Rain Screen Cladding
Open Rain Screen
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Co2 Larch ® Rain Screen Closed Cladding
Closed Rain Screen
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Co2 Larch ® Half lap Cladding
Half Lap
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Co2 Larch ® Shadow Gap Cladding
Shadow Gap
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Co2 Larch ® feather edge Cladding fig
Feather Edge
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Co2 Larch® TandG Cladding fig
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Co2 Larch <sup>®</sup> 1As a contemporary cladding, fencing manufacturer and saw mill we aim to provide our customers with the best durable timber for their cladding projects. Siberian Larch with it's natural resistance to decay, a good density (Janka Hardness 4,900 N (1,100 lbs/in2)), and long life span meets these requirements.

We supply five "closed" i.e. provides a solid wall - PTGV, tongue and grove, shiplap, shadow gap, and feather edge. And two "open" - Rain Screen and PAR (planed all round) also know as square edge board which allows air to circulate.

Co2 Larch <sup>®</sup> 2Above are images of the different types of cladding we supply, it's very much a personal choice depending on whether you want a rustic, traditional or contemporary finish.

Co2 Larch® is available as Grade A or A+ grade, FSC compliant with a positive environmental implications the annual growth far exceeding the annual felling rate. It is a sustainable resource and we aim to keep our carbon footprint to a minimum and encourage sustainable practices.

Siberian Larch Grade A

Unsorted I – 3 (few knots) is highest grade available in regards to quality and look, and BS 1186-3 Class 1.

Co2 Larch® Grade A+

A+ "Face Knot Free cladding" each boards being individually inspected to make sure they are face knot free before processing.


Siberian Larch cladding can be treated (please see our accessories page) but with a durability rating of 3 (please see below) (BS EN 350 timber durability class) it can be left to naturally age.


We supply to Trade, DIY's, Contractors, Builders, Manufactures, Architects and deliver locally and nationally.

If you can't see what you want on the website, or have any question please contact us. Co2 Larch® Example of larch decking 3
Co2 Larch® 4
Due to it adaptability there are thousands of situation which lend themselves to cladding with timber rather than PVC or alternative materials.

Typical uses :- Summer houses, Green houses, Conservatory, garden offices/workshops, fencing, and as the traditional cladding of barns, houses and offices. We have some images on our Customer Projects.


When selecting your timber type for your project it is worth taking in to consideration BS EN 350 timber durability class.

Durability is the ability of a species to resist decay either naturally or through preservatives. The Class is based on the ability of the heartwood (inner part of the tree) to resist fungal decay. The sapwood (the living outermost portion of the tree)is considered not durable and should not be used for external projects without preservative.

BS EN 350 has 5 classes of durability they are:-
  • Class 1 Very durable (Such as Tropical Opepe and Iroko)
  • Class 2 Durable (such as Co2 Cedar Cedar) Co2 Grandis
  • Class 3 Moderately durable (Such as European larch, Cedar (UK), Co2 Larch ® Siberian Larch, North American Douglas Fir)
  • Class 4 Slightly durable (Such as Home Grown (UK) Grow Douglas Fir)
  • Class 5 Not durable (Such as Sitka Spruce)

Class 1 to 3 can be left as untreated timber, a natural ageing process will accrue e.g. Larch will turn a grey colour. Class 4 and 5 will need to be treated with preservatives.

For further information see