VTX Preservative ® Treatment

High pressure preservative treatment offering a 30 year warranty on external timber cladding against rot and insect attack. Available as either VTX Pigmented ® or VTX Zero ® Clear.

Pressure Impregnated Timber Cladding

The VTX Preservative ® range offers a formal 30 year warranty on external timber cladding, a copper and water based treatment. The range offers a 30 year warranty against rot and fungal decay when installed on a ventilated backing structure (UC3 treated).

Being a preservative treatment, not a coating, there is no further requirements to overcoat the product to ensure ongoing performance.

Available in either:

VTX Pigmented ® – The treatment contains brown pigments and dyes. Upon exposure to UV light, these pigments will enrich in colour before offering a level of colour stability for a number of years (subject elevation/ exposure and detailing). This process is often requested to slow the initial weathering of timber without the need to introduce a coating.

VTX Zero ® – A treatment which does not contains and pigment or dyes. Left exposed, VTX Zero treated timber will begins to weather down and over time, the wood will begin to silver-grey. This weathered appearance is sometimes purposely sought by architects or clients who want softer, weathered tones in the board.

European Redwood is the preferred species for receiving treatment. Its open cell structure ensures high levels of solution uptake and is a cost effective species.

The Process

A number of timber species should have protection from decay, insects and termites when being installed externally to ensure their long term performance.

Modern timber preservative treatments are manufactured with the environment in mind, using ingredients with minimum health and environmental implications.

Once timber is machined, the next stage is to get the preservative treatment deep into the cell structure of the timber. This is completed with the help of both vacuum and pressure within a large cylinder.

Initially, a vacuum will be pulled, with the goal of getting as much air out of the cell cavities within the timber. Once the vacuum has been pulled, the cylinder is then flooded with the preservative solution. These cavities have the preservative solution forced into them under high pressure with a final lower pressure vacuum to remove excess treatment. At this stage, timber will now have a higher moisture content than at the beginning of the process. This is something that should be taken into consideration when working with and installing preservative treated timber cladding.