A pump then removes air from the chamber and in doing so also sucks trapped moisture and air from the timber. A treatment is then pumped into the chamber; rapidly soaking deep into the timber. This replaces the moisture and air that has been sucked out.
Pressure treatments give wood the best protection from rot and infestation, potentially protecting the timber for several years without requiring retreatment.
Pressure chamber used in the pressurising process
There are several alternatives to pressure treated timber, which involve dip or brush treatments. Usually, the timber is dipped, or brushed with a solution, which protects the exterior surfaces.
Solutions tend to be water-based, solvent-based, or oil-based, and require retreatment to prevent any decay or infestation of the timber. Depending on the type of solution, retreatment is recommended between 1 and 5 years.
Pressure treatment soaks deep into the timber
Fully pressure treated – pre-cut so ends are not dip treated
Most Dunster House products are fully pressure treated. These include our climbing frames, sheds, garden offices, and gazebos and pergolas. This means that the timber is pre-cut to specification before it is treated, whereas most manufactures will cut the wood to size after treatment, which requires the cut ends to be dip treated, compromising protection. Recently, we improved our products further by adding colourant to our pressure treatment. Therefore, Dunster House products are an attractive brown colour, rather than the typical green, which further enhances the appeal of our products and adds contrast to a garden.
Although most products are treated, Dunster House provides log cabins untreated for customers to decorate and customise in accordance with their taste and style.
All Dunster House structures come with pressure treated bearers as standard. This maximises protection to the lowest part of the structure, in contact with the ground, ensuring protection and reducing the risk of moisture ingress.
Untreated timber is kiln-dried to remove moisture and act as a pesticide. In many cases, this removes the need to fumigate the timber, which is a key consideration in certain regions.
We strongly advise treating log cabins immediately after construction and continue to treat it regularly to strengthen it against varying weather conditions. If left untreated, it will deteriorate.
A comprehensive guide on treating log cabins can be found here.
Since 1994, Dunster House has produced industry-renowned timber products. They work tirelessly to provide outdoor products, from safe play systems for children to comfortable spaces and outdoor offices. All products are made without compromise with high-quality materials to ensure longevity, and simple assembly instructions; keeping DIYers in mind.