Product Description

TGV (Tongue and groove) offers a flat faced finish with only a small v groove at the joint to allow water runoff.
This profile can be either face fixed or secret fixed at an angle through the joint and the chamfered edges allow the profile to be used vertically or horizontally.
This instance of TGV cladding has the fixing obscured by the following board.

Siberian Larch Secret Nail TGV Cladding (SP03)

£4.19 per lm (ex. VAT)
Pricing Ex VAT
Price per Linear Metre £4.19
Price per Square Metre £33.52

Board Lengths

Siberian Larch is supplied in random lengths of approximately 4M.

Please allow for a small amount of waste when ordering.

If you require a specific board lengths, please call 01646 682738 to check the availability before placing your order.


We can deliver anywhere in the UK.

Mainland England and Wales – standard delivery charge £79.00.

For Scotland, Ireland (Northern and Republic) and outlying areas of the UK we will need to quote for delivery. Please call 01646 682738 or read our shipping information for more details.

Please scroll down for more product & technical information.

Product Details

£4.19 per lm (ex. VAT)

Total Price

(ex. VAT)

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Need some help or advice?

Call us today on 01646 682738 to get your free no-obligation advice from our expert carpenters.

Siberian Larch is a dense, tough timber offering good durability and resistance to rot. It’s comparitively low price and strong natural features make this wood a favourite with tradesmen and designers.

Ideally suited for cladding , decking, fencing and all exterior applications.

Larch has a light, pleasing appearance ranging in colour from warm yellow to mid brown and if left to age naturally will become a mid silver grey colour blending into the natural invironment.

At Spahaus our “A grade” Larch also called Unsorted is the most popular choice offering a majority of heartwood with fewer knots.

Cladding Profile Information

SP03 - Secret Nail TGV

TGV is one our most popular products with a flat face and a small V groove.

This secret nail version of the TGV profile allows for fixing through the extended tongue which is then covered by the next board to give a cleaner final finish where the fixings are not visible.

Uses of TGV can include:

  • Cladding external/internal walls and ceilings, including new build
  • Fencing/gates
  • Giving a modern look to an old property
  • Cladding an extension to give a contemporary dual-finish look.
Profile Dimensions
  • Depth: 18mm
  • Width: 142mm
  • Face Cover: 125mm
Board Lengths Available

1.85M, 2.15M, 2.45M, 2.75M, 3.05M, 3.35M, 3.65M, 3.95M, 4.25M, 4.55M, 4.85M

Larch Technical Specification

Latin name
Larix sibirica
Country of origin
Russia - Siberia
Consistent colour; creamy yellow brown. Slowly grown with tight straight grain. Distinct grain pattern. Fine texture. Live inter-grown knots similar to those in pine.
Durability Classification
Durable – In Use Class 3 (Cladding) service life 50-100 years. The timber contains natural fungicide – arabinoglactan.
High. 660 – 750 kg/m3 At 18% moisture content.
Dimensional stability
FSC Certified
High. 1,100 lb/in2 on Janka Scale (Redwood is 480 lb/in2)
Accepts application of stains and paints.
Working properties
Can be sawn and planed with standard woodworking equipment. Pre-drilling recommended.
Austenitic stainless steel fixings are recommended.
End uses
A strong, durable, hard wearing timber used mainly for cladding, rain screens, flooring and decking.