Round douglas handrail Ø42 mm

Ø42 mm round Douglas fir handrail, class 3, for indoor and sheltered outdoor use

This round solid Douglas fir Ø42 mm handrail is made from one of the few woods in the range suitable for both indoor and sheltered outdoor use. Douglas fir (Pseudotsuga menziesii) is a softwood with natural class 3 durability: its tannins provide sufficient resistance to fungi and wood-boring insects for semi-sheltered locations (under a canopy, pergola or covered walkway). A protective finish is essential outdoors where it is directly exposed to rain.

The 42 mm diameter cylindrical profile provides a comfortable, consistent grip along its full length. Douglas fir has a moderate density (~530 kg/m³) and is lighter than oak or beech, making it easier to handle and install. Its warm natural colour – light reddish-brown with a pronounced grain – suits both contemporary interiors and outdoor timber features.

Mounting brackets must be ordered separately and must fit a Ø42 mm round profile. The wood is supplied unfinished and can be cut to the exact length required.

Main specifications

Key points

• ? Natural class 3 durability: resistance to fungi and insects without preservative treatment – suitable for sheltered outdoor use
• ? Versatile use: suitable for both indoor stairs and a terrace or covered-pergola railing
• ? Ø42 mm round profile: a continuous cylindrical grip, with a smooth feel along the full length
• ? Lightweight wood (~530 kg/m³): easy to handle and install; can be cut to length on site
• ? Natural colour: light reddish-brown with a pronounced grain, enhanced by oil or a clear wood stain

Installation advice

Choose brackets suitable for a Ø42 mm round profile – collars or cradle brackets, rather than the grooved brackets used for moulded profiles. Position the brackets at regular intervals, with a maximum spacing of 80 cm between support points. Install the handrail at a height of 80 to 100 cm above the stair nosing or finished floor.

For outdoor use, use at least A2 stainless steel fixings to prevent rust stains on the wood. Ideally, apply your chosen finish before installation, while all sides are still accessible. If cutting is required, sand the cut end with 120-grit sandpaper and immediately apply a coat of finish to it – exposed wood is the most vulnerable area.

Care and protection

Indoors, Douglas fir performs well without a finish, but surface protection improves its resistance to dirt. In sheltered outdoor locations, a finish is strongly recommended to limit greying and extend its lifespan. Options depending on use:

• Exterior wood oil: penetrates deeply, nourishes the wood and gives a natural appearance; reapply every 1 to 2 years
• Exterior wood stain: a light protective film, with a choice of colour; lasts 2 to 4 years depending on exposure
• Exterior varnish: a thicker protective film that lasts 3 to 5 years; must be completely stripped before reapplication

Without a finish, Douglas fir naturally turns grey after 6 to 12 months. This is purely cosmetic and does not affect its mechanical properties or weather resistance. For routine care in sheltered outdoor locations, an annual clean with plain water is sufficient.

Woodup tip

Before you buy: Douglas fir is one of the few woods in the range suitable for sheltered outdoor use (class 3). Apply a class 3 oil or wood stain before installation. Ø42 mm round profile: cradle brackets required. Wall fixings not supplied – use stainless steel screws outdoors. Indoors, a decorative finish is sufficient.

Frequently asked questions

Brackets for a round handrail

Oils, wood stains and varnishes for exterior wood