Douglas Fir Board on Board Cladding 20mm


Douglas fir board-on-board cladding refers to a specific method of installing Douglas fir boards as exterior cladding for a building. The board-on-board technique involves overlapping boards horizontally to create a visually appealing and structurally sound cladding system.

In this method, the Douglas fir boards are typically installed vertically on the building’s exterior. Each board is placed with its edge overlapping the edge of the adjacent board. This overlapping arrangement creates a continuous pattern where the width of one board covers part of the width of the neighbouring board. The result is a visually appealing “board-on-board” look with alternating exposed and covered sections.



SKU: 311612229 Categories: , Product ID: 12229


Douglas Fir board-on-board cladding provides several benefits. Firstly, it offers enhanced privacy and security as the overlapping boards create a solid barrier that reduces visibility from the outside. Additionally, the overlapping design helps to minimise the penetration of water and wind, improving the cladding’s weather resistance.

Douglas fir is very well suited for cladding as it is very strong and versatile it will not mark and dent easily compared to other softwood species. It has a high resin content so will be able to withstand many years of harsh weather. When freshly cut it bears a pink colour that changes to a Reddish brown and as is the case with almost all timber it will slowly change to a silver grey colour when exposed to the weather.

Douglas fir cladding is not easy to treat due to the density and high resin content; however, we believe it looks best left to age to a silver grey colour giving it a traditional timeless look. There are however oils on the market that are suitable to treat the timber to help preserve the beautiful natural colours.

  1. Appearance: Douglas Fir has a reddish-brown to yellow-brown heartwood with a pale yellow sapwood. It has a straight grain pattern with occasional knots. The texture is medium to coarse, and the wood has a natural lustre.
  2. Density: The density of Douglas Fir varies depending on the specific variety and growing conditions. On average, it has a density of about 480 kg/m³ (30 lb/ft³), which makes it a moderately heavy and dense softwood.

Price per 1 square meter – £39.00 plus VAT

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Additional information


20mm x 95mm x 3.0m – £11.12, 20mm x 95mm x 4.0m – £14.82, 20mm x 95mm x 5.0m – £18.53, 20mm x 120mm x 3.0m – £14.04, 20mm x 120mm x 4.0m – £18.72, 20mm x 120mm x 5.0m – £23.40, 20mm x 145mm x 3.0m – £16.97, 20mm x 145mm x 4.0m – £22.62, 22mm x 145mm x 5.0mm – £28.84