Plywood Sauna Excellence: Robust Splicing Process for Outdoor Durability

When purchasing plywood sauna rooms, more and more customers choose to install them in outdoor scenes such as outdoor balconies, terraces, gardens, and even swimming pools. This puts forward more stringent requirements on the structural stability of the sauna room and whether the material thickness can adapt to the outdoor environment. Especially in environments with high temperature and humidity, strong ultraviolet rays, or significant temperature differences between day and night, if the wall panel splicing process is unreasonable and the material thickness configuration is unscientific, it will directly affect the service life and safety of the entire light wave room.
As a manufacturer focusing on sauna rooms, Alphasauna is a manufacturer integrating R&D and manufacturing. We use the industry-leading splicing process of plywood sauna rooms, combined with multiple process optimizations and customer demand customization, while ensuring structural strength and thermal efficiency, significantly improving the ability to adapt to outdoor environments. This article will introduce the wall panel splicing structure, material selection, and customization strategies for adapting to outdoor environments of Alphasauna infrared sauna rooms in detail, to help you understand how to choose a cost-effective plywood sauna room that is truly suitable for long-term outdoor use.

Why Is Hemlock Commonly Used in Plywood Saunas

Insulation: Canadian hemlock is known for its excellent insulation properties, which is essential for maintaining a constant temperature in an infrared sauna. This property effectively locks in heat and ensures that it is evenly distributed in the sauna, bringing a comfortable experience.

Comfortable touch: Canadian hemlock wood has a fine and smooth surface and a soft touch, which is especially important for users who directly touch the walls and benches of the sauna. It helps to create a more comfortable and pleasant use environment.

Sustainability: Canadian hemlock producing areas strictly implement sustainable forestry certification to ensure that the source of wood is legal, renewable, and the impact on the environment is minimized, which is completely in line with the global trend of using green building materials. Choosing this wood is not only to create a high-quality sauna, but also an important support for the development of sustainable forestry.

Heat resistance: Canadian hemlock wood has excellent high temperature resistance and can remain stable in the high temperature environment commonly found in saunas. This excellent heat resistance ensures that the wood maintains its integrity and beautiful appearance, providing a long-lasting and beautiful finish for the sauna.

Cost considerations: As a high-quality softwood, hemlock has a stable supply and a large annual import volume, and its price is relatively moderate among imported woods. Compared with high-end wood species such as red cedar, hemlock has a more significant cost advantage while maintaining excellent performance, making it the preferred material with high cost performance in sauna manufacturing.

Infrared Wall Panel Splicing Process

The light wave room wallboard adopts multiple processes such as cutting, polishing, grooving and splicing during the production process. The thickness is controlled by precise cutting, and the surface texture of the wood is improved by multiple polishing. Then tongue-and-groove grooving is performed, and finally tight splicing is achieved. The overall structure is stable and suitable for high temperature and high humidity environments.

Cutting of Wallboards

We cut the whole board into 5 thin boards, which is mainly for process adaptation and cost-effectiveness. After cutting it into 5 thin boards, it is used with keel and plywood structure, which can not only effectively save wood consumption, but also significantly reduce the cost of a single set of products, enhance market competitiveness, while still maintaining the overall wood texture and visual effect. Modern light wave room wallboards generally adopt the “deck + keel” structural design. The thin board is used as the outer decorative panel and is closely combined with the middle keel, which can achieve multiple functions such as lightweight, moisture-proof and heat preservation.

Polishing of Wallboards

Unlike most products on the market that have only undergone one rough processing, we will perform 2-3 fine polishing and grinding on each piece of wood after “cutting” the board. This additional process step can significantly improve the flatness and fineness of the wood surface, not only making the wood grain clearer and more natural, the color uniform, but also smooth to the touch. Through this deep treatment, even if the customer chooses a 5 mm thin board, they can get a visual effect and use experience close to high-end solid wood boards. This meticulous craftsmanship is an important manifestation of Alphasauna’s quality control that distinguishes it from its peers.

Grooving of Wall Panels

After completing multiple polishing processes, we will precisely groove both sides of each wooden board, that is, process “grooves” and “convex grooves” on the edges of the board respectively. This design allows the wooden boards to be assembled like a mortise and tenon structure, ensuring that the splicing process is stable and sealed and not easy to loosen. At the same time, this step is also the process of selecting high-quality wooden boards. The wooden boards with beautiful appearance and good touch retain the natural texture and wood fragrance. They are both light and stable, and are ideal for infrared sauna wall panels.

Splicing of Wall Panels

The panel thickness of Alphasauna outdoor sauna is nearly 40 mm and is carefully made of high-quality solid wood. In contrast, our infrared sauna wall panels use a unique deck and keel structure design.
In the wall structure of Alphasauna light wave room, pine wood is usually used as the keel material. Pine wood is solid in texture. After drying, it has excellent moisture resistance, crack resistance and structural stability, making it very suitable as the core support structure between wall panels. In addition, pine wood itself is environmentally friendly, easy to process and moderately expensive, making it an ideal material that takes into account durability and cost-effectiveness.
Although the middle part of the wall adopts a hollow design, insulation cotton can be flexibly added as needed to improve the insulation effect. The wall panels are connected by precise tongue and groove, achieving seamless connection and natural transition, which not only improves the overall aesthetics of the wall, but also greatly enhances the strength and deformation resistance of the wall.

How Does the Thickness of Materials Adapt to the Outdoor Environment?

In the outdoor use environment, the light wave room wall panels not only have to withstand the wear and tear caused by daily use, but also need to withstand long-term exposure to sunlight, high humidity, wind and rain and other harsh conditions. In order to more effectively cope with the changing challenges of the outdoor environment, we have developed a corresponding outdoor customization strategy. In the design of the wall structure, we carefully adopted the layered composite technology and scientifically configured the thickness of each layer of materials, thereby achieving a perfect balance between structural strength, thermal insulation and weather resistance.

Adding Plywood Be a Plywood Sauna

On the basis of the original wall panel, a layer of composite board is added to increase the overall thickness, that is, 2 thin wood boards for internal and external facings + solid wood keels + 2 environmentally friendly composite plywoods, with a total thickness of about 50mm. Such a thickness design has three major advantages: strong structural stability, the keel provides good support, and ensures that the wall is not easily deformed under pressure. Good anti-moisture and anti-cracking effect: The thickness of the inner and outer layers of wood is moderate, and even in the outdoor environment with drastic changes in humidity, it can maintain good dimensional stability. Excellent weather resistance: The additional composite plywood has high moisture resistance, UV resistance and temperature difference resistance, and is a key layer to resist outdoor extreme climates.
The hollow part in the middle of the wall panel can also be filled with insulation cotton to improve the overall thermal insulation performance and enhance the stability and thickness of the wood board. The multi-layer thickness design not only improves the outdoor service life of the infrared sauna room, but also provides users with a more stable and comfortable sauna experience

Spraying Water-Based Paint

In order to further improve the waterproof and sun-proof capabilities of the deck-type sauna room wall panels in outdoor environments, after completing the wall panel thickness upgrade and structural assembly, according to customer needs, we will also uniformly apply high-performance water-based wood paint to the outer layer of wood. The paint adopts an environmentally friendly water-based formula, does not contain formaldehyde and harmful substances, meets environmental protection standards, is beautiful and easy to maintain, and only needs to be partially repainted after long-term use, with low maintenance costs.
Combining reasonable wall panel thickness customization with professional protective coatings, a deck-type sauna room has been completed to cope with the outdoor environment. Whether facing high temperature and humidity, strong sunlight, or cold and dry, wind, sand, rain and snow, our infrared sauna room can maintain stable structural performance and comfortable use experience, and achieve a long-term guarantee of 12-18 years of outdoor service life, but this is a theoretical service life, and the actual service life depends on the actual situation.

Factors Affecting Outdoor Service Life

Although the light wave room itself has a rigorous structural design and environmentally friendly and heat-resistant materials, when placed outdoors for use, it is often affected by the long-term natural environment and its service life is often shorter than that of indoors.

Long-Term Ultraviolet Irradiation Causes Aging

Strong sunlight can cause the paint and protective layer on the surface of the wood to gradually oxidize or fall off, exposing the wood directly to the outside, accelerating its cracking, fading and aging process, which not only seriously affects the appearance of the wood, but also greatly reduces its durability.

Rainwater Penetration Causes Mold and Expansion

Continuous rainy weather can easily cause water accumulation at the joints of the wall panels. If the waterproofing measures are not perfect, rainwater may penetrate into the wall panels, causing problems such as interlayer mildew and expansion and deformation.

Wind and Dust Damage the Paint Surface

In dusty areas, particulate matter in the air adheres to the surface for a long time, rubbing and damaging the surface paint, thereby affecting the protective performance and appearance.

Snow Accumulation Causes Appearance Damage

In cold areas, snow-covered areas in winter will cause the wood to absorb moisture and expand and then shrink sharply, forming cracks or local faults, affecting the service life of the wood.

Pests

Outdoor wet areas are more likely to breed termites, borers, etc. If adequate pest control is not done, pests will erode the wooden structure and shorten the product life.

Summary

Light wave rooms are used in outdoor environments and face erosion from a variety of natural factors, including ultraviolet rays, rain, temperature differences, dust and pests. If enhanced protective measures and regular maintenance are not taken, their service life may be greatly shortened from more than 10 years indoors to 3-5 years. Therefore, when using light wave rooms outdoors, it is recommended to use waterproof coatings, sunscreen shielding, and regular inspections and maintenance to extend their stable use cycle.

Choose Alphasauna Infrared Sauna Room

If you haven’t purchased sauna room equipment yet, then Alphasauna is undoubtedly your best choice. If you want the infrared sauna room to have better performance outdoors, you can also customize the use of solid wood wall panels. Alphasauna provides a variety of products and can flexibly meet your customization needs, supporting OEM and ODM services.
If you are interested, please contact us today for more information and visit the Alphasauna blog, our website, to read more articles like this one, which will effectively answer most of your questions about the product.