OVERVIEW OF WOOD PROPERTIES

*Class 1: very durable, Class 2: durable, Class 3: moderately durable, Class 4: slightly durable, Class 5: not durable

*Class 1: very durable, Class 2: durable, Class 3: moderately durable, Class 4: slightly durable, Class 5: not durable

WOOD PROPERTIES

As a natural raw material, every wood product is unique. Unlike industrially manufactured goods, no two decking boards are the same. Wood pattern, knots and color vary even with the same origin and type of wood. It is precisely this versatility that makes wood man's most popular material. Despite great care in production and sorting, the following natural and special properties can occur and are no reason for complaint:

Durability of the wood: Each type of wood has special properties, such as visual characteristics and durability. Depending on the material, the lifespan of softwood is 5 to 15 years. 15 to over 25 years for tropical hardwoods. In addition to the natural durability, the constructive wood protection and the ambient climate also determine the lifespan of a wooden terrace. For optimal durability, waterlogging should be avoided and good ventilation should be ensured. The DIN-EN 305-2 standard describes the natural resistance to environmental influences and should only be understood as a guide or basis for comparison, but not as a guarantee.

Knots and grain: Knots and grain are part of the natural appearance. Depending on the type of wood, origin and growth-related influences, the size and number of knots can vary. Healthy knots are unlimited in number and size and give the wood its natural, individual appearance. Occasional edge knots and knots with slight tears cannot be completely avoided: they are evidence of wood as a natural product. Light-colored sapwood can occur to a small extent (<25%) and does not constitute a reason for complaint.

cracking: Natural weather influences such as sun, moisture and UV radiation have different effects on the wood depending on the type of wood. Cracks can form, but these have no effect on the durability of the wood. Cracking is a natural property of wood and no reason for complaint.

Roughness and plane marks: Despite the greatest care and sharp tools, rough spots and planing marks can occasionally occur during the manufacturing process. Rough spots and slight fiber tears cannot always be avoided, especially in knot areas and in the case of wood fibers that are directed against the processing. Pressure points from the transport lock can also occur in isolated cases. Occasional fraying at the ends can be easily removed. Many planks can be laid on both sides. Therefore, when laying, make sure to use the visually more attractive side as the visible side.

Wood ingredients: With some types of wood, such as oak, bankirai or other types of wood from overseas, colored substances in the wood can be washed out at first. Therefore, surrounding components, facade and stones should be protected by appropriate constructions or covers. Otherwise, the water in swimming or fish ponds may become cloudy.

Sources and fades: Wood is a natural material that "works". Therefore, under the influence of the ambient air humidity, there may be dimensional changes in the thickness and width of the wooden profiles (up to 10%). You should take this swelling and shrinking into account when planning, especially in the case of patio decks.

interlocked grain: Interlocked grain is a structure found in various tropical woods (e.g. Cumaru). This can lead to greater distortion and a partially rough surface.

Catalog dimensions: The specified profile and board dimensions are calculation dimensions, which can deviate from the actual dimensions in the terrace area by up to 5 cm in length and up to 1 cm in width. This is due to the impact and the swelling and shrinking of the wood.

delay: In the case of naturally grown materials, moderate and occasionally severe distortion can occur. The correct spacing of the substructure can counteract the distortion. Decking boards that are already warped can be “healthily trimmed” when cutting. Distortion can be reduced by on-site cutting. Not every board can be warp-free over its entire length.

Natural color differences: An optical and beautiful property of the wood is the natural play of colours. The color differences are equalized by weather influences and exposure to the sun. The natural play of colors is not a sorting criterion.