The inside walls of our timber prefab homes have almost the same structure as the outside ones.
The standard thickness of inside walls is 14 cm. The panel consists of a timber frame with section 92 х 42 mm, filled with 100 mm glass wool. A steam insulation is added and then the panel's both sides are closed with OSB - oriented strand boards 9 mm thick. The last layers of the both sides of the panels are from drywall 9,5 mm thick.
For bathrooms we are using a water resistant drywall.

The inside walls can be finished in different ways: paint, timber cladding, wall papers, ceramics, decorative plaster with interesting effects.
This type of construction allows you to easily mount any item - paintings, wall cabinets, bathroom furniture and accessories, using the appropriate screws.