British Douglas Fir Air Dried Featheredge External Cladding

Our British Douglas Fir Air Dried Featheredge External Cladding is featheredge cladding in air dried British Douglas fir, for external 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.

Left untreated it weathers to silver grey.

A strong, hard-wearing softwood.

Boards are air dried outside, normally for a month or two. When an order is urgent they may occasionally be kiln dried to 18% moisture instead, which takes about two days.

Profile and fitting

Featheredge boards are cut on the diagonal to give a tapered board that is overlapped when fitted, like roof tiles.

Our suggested overlap, for working out quantities: we suggest a 35 mm overlap on every width: 150 mm boards give 115 mm cover, 175 mm boards give 140 mm cover and 200 mm boards give 165 mm cover.

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.

Sizes and pricing

• 150 x 24/6 mm (width x thickness tapering to feather): Character £14.99 / First £19.99 per m² ex VAT
• 175 x 24/6 mm (width x thickness tapering to feather): Character £15.99 / First £20.99 per m² ex VAT
• 200 x 24/6 mm (width x thickness tapering to feather): Character £16.49 / First £21.99 per m² ex VAT
• 150 x 28/8 mm (width x thickness tapering to feather): Character £16.49 / First £22.49 per m² ex VAT
• 175 x 28/8 mm (width x thickness tapering to feather): Character £16.99 / First £22.99 per m² ex VAT
• 200 x 28/8 mm (width x thickness tapering to feather): Character £18.49 / First £25.49 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 (Cladding): surcharge £8.00 per m² ex VAT up to 3500 mm, £12.00 per m² ex VAT above 3500 mm. Add the same number of m² of set lengths as cladding.

Specifications

Finishing and aftercare

Supplied untreated. No treatment is needed, but to hold the colour for longer or add a weather-resistant finish, see our cladding treatments.

Drawings and downloads

Tap the drawing to open it full size.

Tap the drawing to open it full size.

Tap the drawing to open it full size.

Tap the drawing to open it full size.

Tap the drawing to open it full size.

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.
• Use stainless steel or specialist coated fixings: iron fixings can react with Douglas fir and cause black staining.
• Boards left exposed to changing weather before fitting are likely to cup, warp and split. We suggest fitting between October and April where possible, within 7 to 14 days of delivery.
• 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.