The Timber Treatment Process

How does timber treatment help make a timber building last longer?
The Timber Treatment Process

Treated Timber for Stables

Chart Stables are built to stand the test of time using treated timber from known and trusted FSC certified sawmills. Timber treatment protects the timber that makes up a stable from rot and decay. What does the process involve and how does it protect your stables?There are three main stages to the timber process - preparation, application and drying. Each stage is overseen by fully trained personnel who ensure processes are carried out in a consistent, safe and effective manner.

Preparation

Trees are a natural source of building materials. timber is one of the ultimate renewables on the planet. Using FSC certified sources for the timber used in a Chart stable ensures that trees felled for wood are replaced and the growth cycle can continueA felled tree is de-barked, machined and profiled where required. before being dried until moisture levels in the wood hit an optimum level. This initial drying is achieved by carefully controlled air-drying methods. If wood drys too fast, it can cause unequal shrinkage in areas across the timber which results in cracks and damage which severely weakens the final product. Once dry the timber is stacked into blocks that allow gaps in-between and around the outside of each plank so that the treatment will penetrate every inch of the timber.

Application

To apply the water-based wood preservative, the newly prepared, dried, timber stacks are loaded into a purposefully designed treatment chamber (which looks much like a tunnel or pipe in many cases). Treatment requires pressure so an initial vacuum is created in the chamber which evacuates air from the cells of the timber. This is important as it creates space for the treatment to be absorbed. The container is then flooded with the water-based preservative and hydraulic pressure applied to allow its penetration into the cells of the timber.The level of pressure and preservative strength used during a timber treatment depends on the use and class of timber being treated. Treatments are computer-controlled to ensure consistency, from the amount and preservative used to the pressure applied. Once the timber has been under treatment for its required length of time, a final vacuum is applied that extracts excess preservative and recycles it for the next batch of timber.

Drying

In the final stage, the vessel is vented and the low pressure inside draws the surface solution deep into the timber interior. The timber block is then wheeled out of the vessel and left to dry. To provide traceability, each batch of timber is labelled with documentation that explains what it is, what it was treated with and how long it was treated for. Once each batch is suitably dry, it is packed, bound and shipped - ready for use in construction.All of our Static Stables, Mobile Stables, Mobile Field Shelters and American Barns are constructed using pressure treated timber (excluding roof purlins) to ensure a long life.For more information on our Stables ranges please contact the Sales Team on 01233 611123 or enquiries@chartstables.co.uk.

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