As a native alternative to the originally used white cedar, only spruce comes into consideration for the planking. Spruce wood is light, sufficiently flexible, resistant and always readily available. That is why I use it mostly as material for the inner coaming. Careful priming with natural oils during the construction process and regular, minor maintenance work afterwards guarantee a long durability.
Spruce formers hold their shape well when bent and make the hull firm and sufficiently elastic. Another suitable type of wood for the frames is ash. This wood is tough and strong. Due to its natural elasticity it bends slightly rounder, which changes the bottom of the hull to its basic shape. The hull becomes a little softer here, but equally strong.
All fittings, i.e. seat frames, decks, thwarts and the outer coaming are made of hardwood. Ash is recommended, but cherry wood could also be used here.
For the upholstery, pure cotton canvas is used, weighing about 350 g/m², a good compromise between durability and weight. The canvas is only stretched to maintain the outstanding characteristics of this construction method - wood and canvas can yield in the event of strong impacts and, if necessary, shift against each other without breaking or tearing.
For the treatment of wood in the interior I prefer a mixture of linseed oil and varnish oil based on natural oil. Here the wood is protected up to the depth by the oil and the surface is sealed. Thus the wood keeps its natural appearance.
For the exterior paint coat natural oil paints or high-quality boat paints on synthetic resin basis are equally suitable. A shellac bottom in the underwater area is quite common and recommended for these boats, as it is more abrasion-resistant and can be easily renewed without much effort.