Thermo-treated oak slat 2,6 x 9,5 cm S4S natural
On request
Seats and backrests
A sauna bench is in direct contact with the skin at 80-100 °C: the timber must be resin-free, dimensionally stable and pleasant to the touch. Our selection in alder, thermally modified pine, thermally modified oak and thermo abachi meets every one of these requirements.
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products
Plancher en épicéa scandinave lisse AB 2,8 x 19,6 cm
On request
Thermo-treated pine square timber 4,2 × 4,2 cm, natural grade
On request
Planed spruce board 2,8 × 7 cm, class AB
On request
Thermo-treated Scandinavian pine cladding 4,2 x 9,2 cm class NATUREL
On request
Scandinavian spruce strip 18×45 class AB
On request
28×145 Smooth Scandinavian Spruce class AB
On request
Thermo Pine Square 42×68, NATUR class
On request
Board 15×42 Alder planed S4S class A
On request
Planed board Thermo Sosna 26×92 S4S class AB
On request
Scandinavian spruce planed board 28×170 S4S class AB
On request
Alder planed board 15×68 S4S class A
On request
Thermo Pine Square 42×140, NATUR class
On request
Thermo Sosna 42×140 decking board, NATUR class
On request
Alder planed board 28×90 S4S class A
On request
Scandinavian spruce strip 28×45 class AB
On request
Planed board Thermo Sosna 42×117 S4S, NATUR class
On request
Board 28×95 Scandinavian pine/spruce planed S4S class AB
On request
Alder planed board 28×90 S4S class AB
On request
Planed board Thermo Sosna 26×68 S4S class AB
On request
Planed board class NATUR Thermo Abachi (Ayous) 18×90
On request
Planed board Thermo Sosna 19×68 S4S class AB
On request
Top sellers in this category
Plancher en épicéa scandinave lisse AB 2,8 x 19,6 cm
7,34 € HT8,81 € TTC
Thermo-treated oak slat 2,6 x 9,5 cm S4S natural
11,94 € HT14,33 € TTC
Thermo-treated Scandinavian pine cladding 4,2 x 9,2 cm class NATUREL
10,10 € HT12,12 € TTC
Planed spruce board 2,8 × 7 cm, class AB
2,98 € HT3,58 € TTC
Thermo-treated pine square timber 4,2 × 4,2 cm, natural grade
6,47 € HT7,76 € TTC
Our bench and backrest selection
- Alder grade A S4S 2.8 × 9 cm (rough timber, sold by the m²) — the traditional Finnish species.
- Thermally modified Scandinavian pine 4.2 × 9.2 cm, NATURAL grade — the modern alternative, brown tone.
- Thermally modified oak slat S4S 2.6 × 9.5 cm natural — premium, dense grain.
- Thermo abachi board 1.8 × 9 cm S4S Nature — pale African timber, very stable.
- Thermo pine board AB 1.9 or 2.6 × 6.8 to 9.2 cm — a range of sections.
- Thermo pine square and squared stock 4.2 × 4.2 and 4.2 × 6.8 cm — bearers and fittings.
- Planed spruce board AB 2.8 × 7 cm — standard cladding.
Skin-contact species compared
Alder — a soft timber, gentle against the skin, moderate thermal conductivity. The traditional species.
Thermally modified pine — the resin is driven off by the treatment, even brown tone, more stable. The modern alternative.
Thermally modified oak — dense, hard-wearing timber, top-of-the-range finish.
Thermo abachi — light, pale African timber, very low thermal conductivity (ideal for a bench).
Help & advice
Frequently asked questions
Everything you need to know before ordering. Another question? Contact us.
Alder remains the traditional Finnish timber: soft and resin-free. Thermally modified Scandinavian pine is a more stable, modern alternative. Thermo abachi is the least thermally conductive — ideal so it never burns on contact.
Roughly 1 m below the ceiling, where the heat gathers (steam rises). The lower bench (footrest level) sits 30-40 cm below the main one.
Pine and spruce contain resins that seep out at 80-100 °C — staining, a sticky feel and a risk of burns on contact. Thermal treatment drives these resins off, which makes both species suitable.
15 to 25 years with minimal upkeep. Thermally modified oak is very dense — it stands up well to wear and keeps a handsome brown tone over time.