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Our Wootton Bassett showroom is open for visitors by appointment. 

For cladding, beams, plank and flooring we take orders by phone and email. For collections and self-selected timber please make an appointment. Deliveries are limited to sites with easy access and forklift offload or a minimum of two people on site for manual offload.

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TG&V cladding

Tongue & groove cladding

Jointed sweet chestnut TG&V | VTG4

TG&V is shorthand for ‘tongue and groove with a v-joint’. TG&V cladding is a machined profile supplied with a smooth finish and an interlocking edge detail to create a waterproof façade. The TG&V profile creates a clean linear appearance which is ideal for contemporary new-builds and modern extensions to older properties. TG&V cladding is most commonly fixed horizontally although it can be fixed vertically.

Our standard range of TG&V profiles offers a choice of joint details to suit specific design requirements. Alternatively we can produce bespoke profiles to customer specifications.

All air-dried species can be machined to TG&V. The most popular choices are Siberian larch and Canadian western red cedar.

Technical Specification

Profile name TG&V
Profile code VTG1, VTG2, VTG3, VTG4A, VTG5A, VTG6
Appearance Classic
Surface finish Planed
Orientation Horizontal or vertical
Location External only
Length Random lengths from 2.0 – 4.0 metres, depending on specie
Depth Overall Width Cover
20mm 95mm 87mm
20mm 120mm 112mm
20mm 145mm 137mm
20mm 195mm 187mm
Depth Overall Width Cover
20mm 95mm 75mm
20mm 120mm 100mm
20mm 145mm 125mm
20mm 195mm 175mm
Available in
Larch Delete-icon
Western red cedar Accept-icon
Siberian larch Delete-icon
Canadian western red cedar Accept-icon
Jointed oak Delete-icon
Jointed sweet chestnut Accept-icon
Green oak Delete-icon
Elm Delete-icon
When to fix Year round. Ideally September to March
How to fix VTG1, VTG2 – face fix only. One per fixing board / batten
VTG3, VTG4A, VTG5A, VTG6 – secret nail or face fix. One per fixing board / batten
A gap of 2mm should be left between each board
Horizontal attachment
Begin at the bottom, ensuring that the first board is level with the grooved edge facing downwards. If the width of the board is 150mm or less, it can be attached with a hidden nail diagonally through the tongue.For widths over 150mm, the board should be face-fixed, using two (nails?) per board. Fixings should be spaced 65 –75mm apart to allow for some dimensional movement.Vertical attachment
Begin at one corner, with the tongue facing away, ensuring that the first board is vertical. Nail as with the horizontal attachment.TG&V over 150mm_Face fixTG&V up to 150mm_Face fixTG&V up to 150mm_Secret nail 1TG&V up to 150mm_Secret nail 2
Batten thickness 35mm
Batten spacing 400 – 500mm
Nail length 50mm
Further information Click here for further fixing advice
Special or bespoke profiles up to 200mm wide can be provided. However, for external cladding, it is generally recommended that boards do not exceed 150mm in width.
While the utmost care has been taken to provide accurate information, Vastern Timber shall not be held responsible for any consequences arising from any errors or omissions on this website nor for any damages resulting from the use of the information.