After an extremely successful launch we have now increased our stock lengths of Thermowood decking. Now in stock in 3.6m and 4.5m lengths. We've also now aligned the size to match our standard softwood decking of 125mm x 32mm (120mm x 28mm finished size) As with all our Thermowood products, the steam heat treatment process improves the typical characteristics of the softwood to levels often found in tropical hardwoods; i.e. high durability and excellent stability. These properties are consistent throughout the entire cross section.
Supplied with a castle groove on one side and a smooth reverse side it can be laid with either face as the top surface. It also has all four corners eased giving slightly rounded off edges so it's gentle on your feet.
Thermowood is the ideal choice for external joinery projects, such as decking, due to properties including high durability and excellent stability. Thermowood should deliver 30 years of service. It is particularly durable against being attacked by fungus. The heat treatment process uses no chemicals, just steam, to reduce the moisture content which then resists moisture absorption in the future. It's this moisture absorption that causes warping and twisting in softwoods.
As a bi-product of the heat treatment process ThermoWood has an attractive golden brown appearance and a beautiful soft, smooth surface texture, as if it's been sanded. Like all timber products, if it's left without any surface treatment it will start to grey and weather over time.
Reduced Swelling in Humid Conditions – The Thermowood process leads to a significant reduction in equilibrium moisture content and also improves the dimensional stability which means it has dramatically reduced swelling in width when subjected to changes in relative humidity.
Resistance to Fungal Attack – Thermowood also has significantly improved levels of durability against fungi attack. With a durability rating of class 3, Thermowood should be capable of satisfying performance requirements for 30 years of service when used for cladding.Resistant to Insect Attack – Our Thermowood has proven resistant to attack from the three most common wood boring insects found in Europe; House Longhorn beetles, the common furniture beetle and the powderpost beetle.
Splitting Strength – As a result of the ThermoWood process there is a reduction in the splitting strength properties of Thermowood compared to the original timber. No Leaching – As no substances are added during the Thermowood process, no chemical leaching will occur. Also, as the resin is removed during the process the problem of resin leakage through knots or pitch pockets is also removed.