Douglas Fir Internal Shiplap Cladding

Our Douglas Fir Internal Shiplap Cladding is shiplap cladding in Douglas fir, for internal use.

About Douglas fir

Colour varies from pinks and browns to creams depending on where in the tree the board is cut. Dark brown knots can loosen as the wood dries, and resin patches may ooze a little at first and in later hot summers.

Kiln dried to 8–12% moisture content, for internal use.

Profile and fitting

Usually fitted horizontally. The shiplap profile gives clean shadow lines along the length of the building. Boards overlap at a rebate (lap 10 mm on the 142 mm board; recess depth 9 mm).

Grades and options

• First Grade: mostly clear of knots, with some knots up to 5 mm allowed and a small amount of sap on the underside only.
• Character Grade: knots, splits, sap, historic insect damage and other defects without limitation, as long as they don't affect usability.
• End matching (tongue and groove on the board ends) lets you place joints where they fall rather than on a batten, which speeds up fitting and reduces wastage.

Sizes and pricing

• 142 x 20 mm (visible face 132 mm): Character £32.49 / Character end matched £44.99 / First £39.99 / First end matched £52.49 per m² ex VAT
• Supplied in random lengths between 1200 mm and 3600 mm.
• Set lengths are available for an extra charge using Set lengths (Internal Cladding): surcharge £15.00 per m² ex VAT up to 3500 mm, £18.00 per m² ex VAT above 3500 mm. Add the same number of m² of set lengths as cladding.

Specifications

Finishing and aftercare

Supplied untreated. To protect the surface or hold the colour, see our cladding treatments.

Drawings and downloads

Tap the drawing to open it full size.

Good to know

• Natural timber varies: expect some differences in colour and grain from board to board and from the photos.
• Sizes are nominal and can vary slightly with moisture content.
• Not sure? Order up to two cladding samples first.
• Questions? Please contact our Sales Team on 01536 267107.