Raw douglas board
Raw untreated solid Douglas board — dimensions 160x27mm and 210x27mm, lengths 200cm and 240cm. Class 3. Cladding, fencing, shuttering, decking. Untreated. Indoor and outdoor. Sold individually.
Raw Douglas Board – 160x27mm and 210x27mm, Lengths 200cm and 240cm
This raw solid douglas board is a thin, wide piece intended for cladding, shuttering, flooring, fencing and landscaping work. Delivered untreated, it retains all the natural properties of the timber and is easy to work with a saw, planer or router. The available dimensions cover common uses in construction and outdoor or indoor landscaping.
Raw douglas retains its natural sawn appearance — slightly rough texture, golden-orange hue, characteristic grain. Its natural durability (class 3) makes it suitable for outdoor cladding, fencing and outdoor landscaping without mandatory treatment, provided it is not in direct contact with the ground. Natural resistance, outdoor use away from ground contact.
Main characteristics
| Characteristic | Value |
|---|---|
| Species | Solid douglas |
| Finish | Raw — untreated |
| Available dimensions | 160x27mm and 210x27mm |
| Lengths | 200cm and 240cm |
| Use class | Class 3 — natural resistance, outdoor use away from ground contact |
| Treatment | Untreated — to be protected according to use |
| Cut | Sold individually |
Key points
- ✓ Multiple dimensions — 160x27mm and 210x27mm to suit every project
- ✓ Lengths 200 and 240cm — can be cut on site
- ✓ Raw solid douglas — class 3 — natural resistance, outdoor use away from ground contact
- ✓ Untreated — finish and protection to be applied according to exposure
- ✓ Sold individually — order the exact quantity needed
Uses and applications
The 160x27mm format is suited to vertical or horizontal cladding, open-slat fencing and casings. The 210x27mm format covers larger surface areas with fewer joints — faster to install as cladding or for garden shuttering. Both formats are also used for outdoor shelving, planters and garden furniture.
Installation advice
Store boards flat on a ventilated support, off the ground, before installation. Allow an expansion gap of 3 to 5mm between each board for outdoor uses — timber expands in width according to moisture. Fix with A4 stainless steel or galvanised screws to avoid rust marks on the timber. For vertical cladding, use counter-batten battens to ensure ventilation behind the cladding.
Maintenance and protection
Apply an exterior wood saturator or UV oil before installation to limit greying and shrinkage cracks. Douglas greys naturally within 6–12 months without protection but retains its mechanical properties. Renew the protection every 2–3 years depending on exposure. Avoid direct contact with the ground.
WoodUp tip
For horizontal cladding, allow an expansion gap of 3 to 5mm between each board. On a south- or west-facing façade, raw douglas may develop surface cracks in the first few years — these surface cracks do not affect resistance.
Please note before purchasing: Raw untreated douglas greys within 6 to 12 months outdoors. This is a natural evolution, not deterioration — the timber retains all its mechanical properties.
Frequently asked questions
What is the difference between a raw board and a planed board?
The raw board retains the sawn appearance — slightly irregular surface, natural texture, slightly larger dimensions. The planed board has been machined on its faces to produce a smooth surface and precise dimensions. For visible cladding or a decorative application, planed gives a more refined finish. For shuttering or a hidden structure, raw is sufficient and more economical.
How can shrinkage cracks be avoided on untreated boards?
Shrinkage cracks are natural in untreated solid timber — they do not affect the board's resistance. To limit them, store boards under cover until installation, apply a saturator or oil as soon as they are fitted, and avoid alternating exposure to rain and intense sun. On wide boards (200mm), cracks may be more pronounced than on narrower formats.
Can these boards be used for interior flooring?
Yes, in dry interior conditions. For a visible floor, sand the exposed face (grit 80 then 120) and apply a floor varnish or parquet oil. The 27mm thickness (raw) is sufficient for flooring on joists with a maximum centre spacing of 40cm.
Should these boards be treated before outdoor installation?
Untreated douglas is naturally durable (class 3) — it is suitable for outdoor cladding and fencing without mandatory treatment. To slow greying and shrinkage cracks, apply a UV saturator before installation and renew every 2–3 years. Untreated douglas greys within 6–12 months but retains all its mechanical properties.
Can these boards be painted or stained directly?
Yes. Lightly sand the surface (grit 120) before application. For painting, apply a suitable primer for resinous timber. For staining or oiling, apply directly to dry timber. Planed timber offers better adhesion than raw and uses less product.
Complementary products
Planed douglas board — same species, smooth surface
Raw douglas rafter — same species, rafter format
Dispatch within 10 days when the product is in stock *.
* Except bespoke products
Dispatched within 6-8 weeks for personalised and made-to-measure products.
Payment in 1 or 3 instalments at no extra cost. Bank transfer, cheque or PayPal
Satisfied or refunded if returned within 14 calendar days (Sundays and public holidays included) following delivery.





