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Siberian Larch Decking Smooth and Reeded Profile 27x144mm


We supply heartwood selected Siberian Larch kiln dried which is slow grown ensuring a durable deck board. The decking measures 27x144mm.

Our decking is FSC Certified ensuring it is from sustainable sources eliminating illegally soured wood in our supply chain. This profile is precision machined, versatile as you have an option of choosing sides one side is smooth and the other side is reeded i.e reversible dual-sided profile.

Siberian Larch will weather to a silvery grey colour if uncoated depending on exposure. We recommend applying the Aqua Classic Larch pigmented Solvent finish for exterior decking and cladding as we find this works best for finishing and protection of Siberian larch helping preserve its natural colour longer.

Larch tends to have or develop splits or checks which tend not to affect the structural performance of the decking. If the resin is present clean off with a solvent. Always allow a minimum of 10% for trim or crosscutting waste when ordering. The boards are supplied 4 No. in a bundle.



Key features

  • Natural Siberian Larch Decking SertiWOOD® Heartwood
  • Natural golden brown colour
  • Naturally durable no need to add preservative treatments
  • Thick and Wide Deck board ( see additional profile information)
  • Reversible decking:  dual-sided smooth side and a small grooved side / reeded
  • Slow-grown and selected for durable heartwood
  • Quick and easy to install
  • Available in long lengths
  • Sourced from Sustainable Forests and FSC Certified
  • Timber Quality is A/B Grade.
  • For pack quantities, lengths, dimensions, etc please click on the additional information tab

This premium quality Larch Decking offers so many options! Reversible so you can choose between a smooth or reed surface. Plus, it comes in either a natural golden brown colour or a weathered effect. If this doesn’t take your fancy, the decking can be painted or stained over. Featuring wide, thick kiln-dried boards, it’s extremely stable. As a result, it’s used extensively for landscaping, around pools, spas and balconies. Our slow grown Siberian Larch is durable and dense, making it one of the best available in the UK. No additional treatment necessary for above ground decking, fencing and cladding projects.

For Decking fixing, we recommend Stainless Steel Decking Screw 4.5x65mm or 60mm long

Additional information


14 Bundles (32.2m2), 4 Pack (2.3m2)


Smooth and Reeded Dual sided profile



Environmental Certification


Available in more colours



Stainless Steel Decking Screws 60mm or 65mm

Working Properties

Easy to work


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