Raw pine rafter

Name: Raw pine rafter
Brand: Levigne
SKU: CHEVSAPBRUT
Price: 4.91 EUR
Availability: InStock

Untreated raw solid fir chevron and batten, sections 60x40mm and 60x80mm, lengths 200cm and 240cm, sold individually. Class 2: reserved for dry interiors or covered outdoor use — stain or saturator treatment is mandatory before any exposure to rain, as untreated raw fir offers no natural resistance to moisture. Interior framing, flooring, partition — 60x40 section for lightweight framing, 60x80 for longer spans.

Length (cm)

Section (cm)

Reference CHEVSAPBRUT6040200

€4.91 incl. tax

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Description
Product Details

Joist / Rafter Raw Fir – Interior Decking and Framing, Sections 60x40mm and 60x80mm

This rafter / joist in raw solid fir is a rectangular-section piece intended for floor joists, interior frameworks and cladding supports – primarily for indoor use. Available in two sections – 60x40mm for light structures and 60x80mm for more heavily loaded spans – and in two lengths: 200cm and 240cm. The piece is delivered sawn raw and untreated.

Raw fir is the most economical species for interior structures. Its straight grain and light weight make cutting and installation easy. The raw sawn texture gives it an authentic look appreciated in interiors with a natural or industrial feel, but may require sanding if the piece is visible. The term "rafter" refers to use in roofing or an inclined structure, "joist" to horizontal use as a support for decking or floor boards – the piece itself is identical, only the use differs. Indoor use only.

Main characteristics

Characteristic	Value
Species	Solid fir
Finish	Raw – untreated
Available sections	60x40mm and 60x80mm
Available lengths	200cm and 240cm
Use class	Class 2 – dry interior, covered use with no ground contact
Treatment	Untreated – to be protected according to use
Use	Interior framing, flooring, partition – excluding roof structure
Cut	Sold individually

Key points

✓ 2 sections – 60x40mm (light structures) and 60x80mm (more heavily loaded spans)
✓ 2 lengths – 200cm and 240cm, can be cut on site
✓ Raw solid fir – class 2 – dry interior, covered use with no ground contact
✓ Dual use joist / rafter – interior floor, light framing, cladding
✓ Untreated – to be protected according to final exposure
✓ Sold individually – order the exact quantity required

Uses and applications

As an interior floor joist: the primary use for these sections. The 60x40mm section is suitable for centres of 40cm maximum under a timber floor. The 60x80mm section is adapted to longer spans between supports. Untreated fir is reserved for dry interiors – these sections are not suitable for outdoor decking or roof structure.

As a decking joist: horizontal support to which decking boards are fixed. The 60x40mm section is suitable for centres of 40cm maximum under a timber floor, the 60x80mm section for longer bearing spans. Indoor use only – untreated fir is not suitable for outdoor decking or roof structure. Allow a 5 to 8mm gap between joists to permit ventilation beneath the decking.

As interior framing: partition studs, counter-wall batten, interior cladding support or low floor.

Installation advice

Store pieces flat on a ventilated support, off the ground and sheltered from rain before installation – untreated fir absorbs moisture quickly. For decking, use A4 stainless steel screws or fixing clips. For roof structure, prefer bolts or galvanised nails in accordance with good practice. Outdoors, apply a fungicide-insecticide treatment before installation if the species is not naturally resistant.

Maintenance and protection

For dry indoor use, no treatment is required. If the piece is visible (exposed floor, partition), apply an oil-wax or varnish to protect against soiling. Do not use outdoors without a suitable fungicide-insecticide treatment – fir is susceptible to fungi in damp conditions.

WoodUp Tip

For an interior floor with 60x80mm fir joists, the standard spacing is 40cm. Ensure the joists rest on a stable support and that underfloor ventilation is maintained. These sections are suited to interior floors and light framing – they are not dimensioned for roof structure (DTU 31.1) or outdoor decking (fir class 1).

Important before purchasing: Raw untreated fir is sensitive to moisture variations – allow the pieces to acclimatise for 48 hours in their installation environment before fitting, to limit movement after fixing.

Frequently asked questions

Which section to choose between 60x40mm and 60x80mm?

The 60x40mm section is suitable for light structures: decking joists at centres ≤ 40cm, light roofing rafters at spans ≤ 1.5m, framing battens. The 60x80mm section is adapted to longer spans, heavier loads (heavy tiles, snow) or wider centres. If in doubt about sizing, consult a carpenter or a timber engineering office.

What is the difference between a rafter and a joist?

It is the same piece of timber – the difference lies solely in the use. As a rafter, the piece is placed at an inclined bearing position beneath a roof covering. As a joist, it is laid flat, horizontally, as a support for decking or floor boards. The section and length are identical in both cases.

Does this fir joist need to be treated before use?

Untreated fir is a class 2 species – it is suitable for dry interiors. For any outdoor or damp-area use, a fungicide-insecticide treatment is essential before installation. For dry indoor use (framing, flooring), no treatment is required.

Can these pieces be cut to the desired length?

Yes. Solid fir cuts cleanly with a circular saw or mitre saw. Order the length immediately above your requirement (200 or 240cm) and cut on site. Deburr the cut edges and apply a protective coat to the cuts if used outdoors.

Which joist section for a deck with 21mm boards?

For 21mm thick boards laid on joists, the 60x40mm section with a maximum spacing of 40cm is the standard configuration. For 27mm boards or dense timbers (IPE, thick douglas fir), the spacing can increase to 50cm. The 60x80mm section is recommended if the spacing exceeds 50cm or if you are laying thick cladding boards.