What is better to sheathe a bath inside?

Anatoly good day! I took a friend to help. Finishing work to do. Bath from prof. Beam one box a year as on adjustable piles. What materials are best used for interior decoration.

Asking the question, what is the best way to sheathe a bath inside, the first thing that does not hurt to find out: for a bath in a log house, sheathing is an optional procedure. From the point of view of safety, protection against rotting under the influence of steam and moisture is sufficient. For example, by coating the surface of logs with special compounds.

But the inside-sheathed bathhouse is a higher level of performance, in functionality and appearance. Let's look at the popular materials for the interior decoration of the bath.
Wood species, traditionally used for these purposes, resist damage under the influence of high temperatures, moisture, emit useful substances when heated.

Let's start with the expensive oak and cedar. The first is suitable for the steam room: it is durable, smells good, promotes healing and has various processing capabilities. The imagination of the designer opens up space. Cedar for the steam room can not be called a suitable option, but in the washing or rest room does not know equal.
The aromatic linden and mystical aspen, which has long been credited with protecting a person from otherworldly forces, is also a traditional answer to the question of how to sew a bath inside. The strength of the rocks is low thermal conductivity. Surface heating remains acceptable for direct contact with the skin.
A good choice to sheathe the bathhouse inside with your own hands are alder panels - a supple, easy-to-handle breed. Spruce and pine, which fill the bath with a coniferous aroma, are not suitable for a steam room due to resinousness. But they will show themselves on the beneficial side in other bath rooms.

Do not know how to sheathe a bath inside, think about synthetic sheathing? It is unlikely that this will save, miracles of the chemical industry sometimes cost even more than natural wood. And the benefits of inhaling the fumes of a heated polymer surface are not to be expected. It is better then, as mentioned at the beginning, to abandon the casing in favor of processing the log house.