Legendary World No. 1 tennis player PAT RAFTER chooses SDS Australia

Thermo-modified European Alder Cladding – STP

From $10.56 per piece $101.15 per square metre

In stock • Order now

Pick-up: Milsons Point or Nowra

Super Special – Grab While Stock Lasts!

Legendary World No. 1 tennis player PAT RAFTER chooses SDS Australia

Deluxe European Timber | Sustainably Sourced

5.0

Thermo-modified European Alder Cladding – STP is ideal for those who prioritise a combination of ecological responsibility, aesthetic elegance, and long-lasting performance in their sauna design.

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Order a Sample ($20 for 4 timbers)

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Premium-quality materials

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Overview
Key Features
Documents & Files

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Overview

The Premium European Alder – Heat Treated (STP) in a 68mm x 15mm profile is an outstanding material choice for sauna construction, combining durability, aesthetic appeal, and environmental sustainability. This high-quality wood is sourced from responsibly managed European forests, ensuring an eco-friendly option for your sauna project.

Thermo-modified European Alder Cladding – STP
Width & Thickness	68mm x 15mm, 90mm x 15mm, 120mm x 15mm
Material	Alder
Use	Walls, Ceiling
Profile	STP
Length	1800mm, 2100mm, 2400mm, 2700mm, 3000mm

Key Features

Profile Size: Each plank is crafted to be 68mm wide and 15mm thick, ideal for creating a robust and elegant sauna interior.
Heat Treatment: The alder wood undergoes a specialized heat treatment process (STP), significantly enhancing its durability and resistance to the humid and hot conditions typical in saunas.
Aesthetic Appeal: Known for its fine texture and subtle grain, European Alder provides a visually appealing interior with a warm and inviting ambience.
Enhanced Stability: The heat treatment process increases the wood’s dimensional stability, minimizing the potential for warping or shrinking under varying sauna temperatures and humidity.
Eco-Friendly: Sourced from sustainable European forests, the use of this wood supports environmentally responsible practices.
Health Benefits: With no chemical treatments involved, it offers a safe and natural choice for sauna users, aligning with health and safety standards.
Low Maintenance: The durability and natural properties of heat-treated alder ensure that it requires minimal maintenance, retaining its quality and appearance over time.

Documents & Files

Wall Panel Installation & Maintenance Guide

🔥 Super Special

Same-Day Pick-Up in Sydney or Nowra, or Fast Shipping Australia-Wide!

The following popular Alder profiles are in stock now for same-day pick-up from our Milsons Point showroom in Sydney or Nowra warehouse (while stock lasts):

🪵 Did you know?

Alder is one of the most popular sauna timbers in Europe – especially in Finland and the Baltics – thanks to its smooth finish, low resin content, and stable performance in heat. If you’re after a true European sauna experience, Alder is the way to go. See our full Alder range here.

All Sauna Timber For Sale

Customer Reviews

QUALITY WOOD AND QUALITY PEOPLE!!!!

I had an awesome experience with SDS. From start to finish, the customer service was top-tier – James was incredibly responsive, genuine, and helpful. I also want to give a special mention to Tony, the head of DIY, who went above and beyond to give clear, practical advice that made a huge difference to my project.

What stood out most was that it felt like a real partnership – not the usual experience where you’re left guessing or being upsold. These guys genuinely wanted to help me get it right, and the quality of materials matched the service. Highly recommend SDS for any DIYer who wants solid support and trusted products.

Also worth noting I did my due diligence on a number of providers in Sydney and even went and checked out different custom builds located in the CBD at gyms so I could compare quality. There was a monumental difference in quality,

Thomas Hays

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Very happy

Bought about 150 pieces of sauna wood and every one of them was perfect. No knots, no bowing, no issues at all. Interstate delivery was fast also. Very happy.

George Bito

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