Severn Valley Woodworks & Hutton Product Guide




LONG LASTING TIMBERS Preservative pressure treatments significantly extend the service life of softwood timbers by Use Classes Use Classes are defined by British and European Standards, providing a guide

From our three on-site treatment plants, with a capacity to treat around 200m 3 of timber per day, we can offer a choice of traditional green coloured TANALISED treated timber or, alternatively, a rich brown coloured TANATONE treated timber, ideal for fencing and landscaping applications. We offer a 15 year TREAT-RIGHT performance warranty to our range of Use Class 3 out of ground contact pine deck boards and claddings as well as our full range of Hutton garden products. We also offer a 15 year TREAT-RIGHT performance warranty on certain species of our Use Class 4 ground contact timbers. See page opposite for details of the 15 year TREAT-RIGHT performance warranty.

A combination of using latest generation TANALITH wood preservative, careful pre-treatment timber preparations, the use of high quality pine timbers and approved treatment procedures allow us to offer a 15 year TREAT- RIGHT performance warranty. This warranty is available on Hutton garden and landscaping products and also on the Severn Valley range of decking and cladding products. The 15 year TREAT-RIGHT performance warranty covers the failure of these products fromwood decay and insect attack giving you total confidence in their long term performance.

Warranty Conditions 1. The Severn Valley Woodworks or Hutton Garden Products range of products should only be used for the purpose they were designed for. For instance, the products can be placed in ground contact (surface contact) but must not be embedded within the ground (below the surface). 2. Should the Severn Valley Woodworks or Hutton Garden Products range of pressure treated timbers be cross cut, notched or bored during installation, the exposed surfaces must be brushed with a suitable end-grain preservative to maintain the integrity of the treatment. Always follow the end grain product manufacturer’s instructions. 3. Any Severn Valley Woodworks or Hutton Garden Products range of products which are further processed, e.g. planed, must be returned to Severn Valley Woodworks for re-treatment. 4. A proof of purchase invoice must be supplied with any claim made.

Warranty Details Covered is the cost of re-supply by Severn Valley Woodworks, or the re-supply by Severn Valley Woodworks (at our discretion), of a component that is proven to have failed as a result of wood decay or insect attack within a 15 year period from the initial purchase. It does not cover the costs of removal or reinstatement of such components or consequential costs or loss due to failure of the component. The term ‘wood decay’ as used in the warranty refers to wood destroying fungi that feed on and degenerate the wood cell walls. It excludes staining and mould fungi associated with the weathering of wood. The term ‘insect attack’ refers to attack by wood digesting insects that destroy the timber structure. The term ‘failure’ refers to damage caused by insects and/or fungi to such an extent that the component is no longer fit for purpose. This warranty does not affect the statutory rights of consumers.

providing an effective long term protection against all forms of wood decay and insect attack. Carried out in our own industrial treatment vessels by Severn Valley Woodworks trained operators, our treatments utilise the latest TANALITH E wood preservative from Arxada in a proven high pressure impregnation process. This renowned preservative gives a proven, outstanding performance, particularly for timbers intended for use in ground contact applications.

to the risk of wood decay and insect attack to timber components, depending upon their end use. The higher the Use Class, the higher the level of preservative protection required. SVW treat all our timbers to meet either Use Class 3 or 4. USE CLASS & TYPICAL SITUATION UC1 Internal building timbers with no risk of wetting or condensation. UC2 Internal building timbers with a risk of wetting or condensation. UC3 External building, fencing and landscaping timbers used out of ground contact. UC4 External building, fencing and landscaping timbers used in ground contact.

Exclusion Any Severn Valley Woodworks or Hutton Garden Products range of pressure treated timber components supplied for use outside of European markets.




Timber loaded into treatment vessel. Initial vacuum applied and the timber cells are evacuated of air. Vacuum held.

Hydraulic pressure applied, forcing the preservative deep into the structure of the timber.

Cylinder flooded under vacuum with TANALITH wood preservative with TANATONE brown colourant if required.

Final vacuum extracts excess preservative solution, which is pumped back to storage.

Low pressure inside timber draws in surface solution when vented to atmosphere. Treated timber is left to dry.



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