Douglas fir grating 50x50x5 cm – 4 slabs per m²

Douglas decking tiles 50x50x5 cm – 4 tiles per m²

Douglas wood decking tiles 50x50x5 cm – 4 tiles per m²

Douglas wood tile 50x50x5 cm — 4 tiles per m2

Name: Douglas wood tile 50x50x5 cm — 4 tiles per m2
Brand: Levigne
SKU: CAILLEBOTIS
Price: 15.9 EUR
Availability: InStock

Douglas fir wood tile 50x50x5 cm, Massif Central, 9x21 mm nailed slats, French manufacture. 4 tiles for exactly 1 m². 50 mm thickness greater than the market standard (44 mm) – improved rigidity under foot traffic. Douglas fir class 3, outdoor use without mandatory treatment. Weight 4.5 kg per tile. Terrace, balcony, garden path, free-lay on concrete slab or PVC pedestals. Douglas fir greys naturally – saturator available to preserve the original colour.

Reference CAILLEBOTIS

€15.90 incl. tax

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Douglas Fir Wood Slab 50x50 cm — Thickness 50 mm, Massif Central

This wood slab in Douglas fir from the Massif Central measures 50x50x5 cm, with boards of section 9x21 mm assembled by nailing. Four slabs cover exactly 1 m², which simplifies the calculation of surfaces to be covered with no waste or complex cut-outs. Manufacture is entirely French. Each slab weighs 4.5 kg.

The 50 mm thickness exceeds the usual market standard (44 mm for the majority of competing products). This additional thickness reinforces the rigidity of the slabs under foot traffic and limits the risk of deflection on insufficiently closely spaced supports. Douglas fir is naturally durable in class 3 (no ground contact, exterior), which allows it to be used without mandatory treatment on a terrace or balcony.

These slabs are suitable for terraces, balconies, garden paths and poolside areas. They are laid loose — without permanent fixings — making them removable as needed. They adapt to all stable surfaces: concrete slabs, adjustable PVC pedestals, breeze blocks or packers. A ventilation gap of 2 to 5 mm between adjacent slabs is recommended for rainwater drainage.

Main characteristics

Characteristic	Description
Dimensions per slab	50 x 50 x 5 cm
Board section	9 x 21 mm
Weight per slab	4.5 kg
Coverage	4 slabs for exactly 1 m²
Species	Douglas fir (Pseudotsuga menziesii) - Massif Central
Natural durability class	Class 3 — exterior, no ground contact
Assembly	Nailed boards
Manufacture	French — Massif Central
Delivery condition	Untreated raw
Use	Exterior — terrace, balcony, garden, poolside
Installation	Loose-lay — no permanent fixings, removable
Compatible supports	Concrete slab, PVC pedestals, breeze blocks, packers

Key points

✓ Thickness 50 mm: 6 mm greater than the market standard (44 mm), better rigidity under foot traffic
✓ 4 slabs for exactly 1 m²: surface area calculation without approximation or waste
✓ Douglas fir, Massif Central: traceable French supply chain, naturally durable class 3 species
✓ Loose-lay and removable: no permanent fixings, removal without damage to the substrate
✓ Nailed boards: mechanically stable assembly, without glue or plastic clips
✓ Weight 4.5 kg per slab: individual handling without effort, installation accessible without tools

Installation advice

Lay these Douglas fir wood slabs on a flat, stable and draining surface. The most common solution is a concrete slab with adjustable PVC pedestals: the pedestals compensate for level irregularities and ensure an air gap beneath the slabs, an essential condition for ventilation and wood durability. On well-compacted gravel or stabilised ground, the slabs can be laid directly on levelling packers.

Leave a gap of 2 to 5 mm between each slab to allow rainwater run-off and seasonal expansion of the wood. Orient the boards in the same direction for a linear effect, or alternate from one slab to the next for a chequered effect. Cut-outs are made with a circular saw or jigsaw. Protect freshly cut edges with an exterior finishing oil before installation to limit moisture absorption at the ends.

Avoid installation on waterlogged ground or in permanent contact with soil: Douglas fir is class 3 (exterior, no ground contact), not class 4. At garden borders, lay the slabs on a geotextile membrane to limit plant regrowth beneath the slabs.

Maintenance and protection

Delivered untreated and raw, Douglas fir naturally weathers to grey within 6 to 12 months of exposure. This greying is superficial and does not affect the mechanical properties of the wood. To retain the original pinkish-brown colour, apply an exterior wood saturator at installation, then renew every 1 to 2 years depending on exposure.

Clean the slabs twice a year with a soft brush and soapy water (neutral pH). In the event of moss or lichen, use an exterior wood fungicidal product before re-saturating. Check the condition of the pedestals or support packers annually and re-level if necessary.

Clear saturator: maximum protection without altering the natural colour of the wood
Tinted saturator (grey, teak, honey): to harmonise the slabs with existing garden furniture
Exterior hard oil: penetrating, reinforces resistance to UV and stains

Frequently asked questions

What is the difference between a Douglas fir wood slab and a standard decking tile?

The 50x50 cm Douglas fir wood slab is a French-made decking tile, with nailed boards rather than clipped onto a plastic structure. The 50 mm thickness (vs 44 mm for the majority of models on the market) gives it better rigidity and increased durability under regular foot traffic. Naturally durable Douglas fir, class 3, does not require mandatory autoclave treatment, unlike pine which must be impregnated to withstand outdoor use.

How many slabs should I order to cover 12 m² of terrace?

You need exactly 48 slabs to cover 12 m² (4 slabs per 1 m², so 12 x 4 = 48). Allow 5 to 10% extra if your surface has angles to cut or cut-outs around obstacles. For a rectangular terrace without complex cut-outs, the calculation is straightforward: surface area in m² x 4 gives the number of slabs.

Can these Douglas fir wood slabs be laid directly on an existing concrete terrace?

Yes, it is even the optimal configuration. Lay the slabs on adjustable PVC pedestals to create an air gap of 3 to 5 cm beneath the slabs — this allows drainage and ventilation, essential conditions for wood durability. On a concrete terrace with a slope (1 to 2% for water run-off), the pedestals allow you to achieve a horizontal plane even if the underlying slab is not perfectly level.

Are these wood slabs suitable for a balcony?

Yes, provided the balcony has sufficient load-bearing capacity (to be verified with the project manager). Each slab weighs 4.5 kg. For a 6 m² balcony, allow 24 slabs, giving a load of 108 kg to be assessed with the structure before ordering. Installation on pedestals is still recommended even at height to maintain drainage.

Why choose Douglas fir from the Massif Central over a composite slab or an exotic wood slab?

Douglas fir from the Massif Central is a French-produced timber, with no impact on tropical forests, with a traceable local processing supply chain. Unlike composite wood, it can be repaired, sanded and re-treated — a damaged slab can be replaced individually. Compared to exotic species (ipe, padauk), Douglas fir offers a better price-to-durability ratio for class 3 exterior use: exotic species are only essential for class 4 (permanent ground or water contact).

Is the greying of Douglas fir a defect or a normal evolution?

Greying is a natural evolution of Douglas fir outdoors, expected within 6 to 12 months. It results from the action of UV and moisture on superficial lignins — the mechanical properties are not affected. If silver-grey suits your project, no treatment is necessary. To maintain the original pinkish-brown colour, an exterior saturator applied from installation and renewed every 1 to 2 years is sufficient.

Saturators and oils for exterior wood slabs

Douglas fir raised bed kit — 3 sizes available