Decking Boards Ash thermo treated | 1900-4000x137x25 mm | smooth/planed | 100% PEFC

Ash has long been one of the most valuable woods in Central European forests. After oak and beech, it is one of the most important indigenous deciduous trees. For outdoor use, ash must be modified with a special thermal process. Thermo ash is made from European or North American ash. After thermal treatment, the durability improves and the swelling and shrinkage behaviour is reduced. Thus, the thermo-ash has similar properties to a tropical hardwood.

The ash tree grows throughout Europe and also in North America as well as in the Near East or even partly in India. As a rule, an ash tree reaches a height of 17 to 35 m and a diameter of up to 100 cm. The bark of younger trees is smooth and greenish grey, while that of older trees is brown to black with broad longitudinal and transverse cracks.

Ash thermowood has a colour spectrum from light brown to dark brown. UV radiation and weathering cause the colour to fade very quickly. The wood bleeds only minimally, i.e. very few coloured wood ingredients are washed out.

Grading and special features

Our ash thermowood decking boards are re-sorted and correspond to a premium quality, however, up to approx. 5% inferior qualities are to be accepted. Please allow for a corresponding reserve when placing your order. The following typical wood characteristics and peculiarities of decking boards do not constitute grounds for complaint: dry cracks, surface cracks, end cracks, knots, discolouration, alternate growth, resin galls, resin leakage and "pinholes" (frass channels caused by fresh wood insects, but without any influence on the durability or static properties).

Water or mould stains on the wood caused by storage or transport will disappear completely after a short time due to UV radiation or when the decking boards are oiled. Before installation, always store the decking boards in a well-ventilated, dry place stacked on squared timber but without a foil cover. Decking boards are not cut at right angles and to size on delivery and must always be cut neatly to the final size during installation.

Surface

We always recommend a smooth surface. Smoothly planed surfaces have advantages over finely grooved, coarsely grooved or grooved surfaces. A smooth surface is not more slippery, dries faster, is easier to clean, water can run off better and no moss forms or dirt accumulates in the grooves as with a grooved surface. With smooth surfaces, you can usually use both sides depending on your taste. Please note that one side is usually only levelled, i.e. partially not cleanly planed along the entire length. Smooth decking boards can always be sanded or sanded if necessary or desired. This way you can repair slight damages or renew the entire terrace if it has turned grey after a few years.

Assembly

The installation must be carried out professionally, i.e. maximum distance of the substructure approx. 45-50 cm, terrace must be well ventilated, prevention of waterlogging by constructive wood protection. Please use only fastening materials made of stainless steel (V2A or V4A) for installation. Simple fastening materials that are only galvanised react with the ingredients of the wood and lead to unsightly, usually dark discolouration. If the screws are visible, the holes must be pre-drilled to avoid cracks and splintering due to the tension in the wood. Treat the decking boards with an end-grain wood preservative at the ends to prevent drying-related cracks at the board ends.

Cleaning & Maintenance

Your decking is alive! Wood is a natural material and reacts to the influences of nature. Clean your decking boards once a year with an intensive cleaner and a brush to prevent the formation of moss and algae and to keep the surface a beautiful silver-grey. After the basic cleaning, we recommend treating your terrace with a special outdoor oil. You saturate the fibres with the oil and thus the moisture absorption in the wood is reduced. The wood swells and shrinks less. Regular oil treatment prevents the formation of cracks in the boards, which can occur with strong temperature fluctuations.