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Timber Treatment FAQs

What is special about Wolmanit® CX treated wood?

Wolman have been pioneers and market leaders in the development of environmentally advanced, low-hazard preservatives for over 50 years and can rightly claim to be 'the originals in wood preservation'. Wolmanit® CX products are the most recent development from the Wolman labs combining superb penetration characteristics with high performance giving confidence to end users all over the world.

Where can I use Wolmanit® CX treated wood?

Wolmanit® CX-treated wood is designed for garden timbers and fencing as well as interior and exterior construction materials such as framing, trusses, joists etc. Wolmanit® CX-treated wood should not normally be used in permanent saltwater or freshwater contact without prior discussion with WJ Components.

Is Wolmanit® CX treated timber always green?

No! The green colour of freshly treated wood naturally fades to a pale straw colour after 2-6 weeks depending on the time of year and exposure to UV. After 6 – 12 months the wood will silver to a natural grey unless measures are taken to avoid this. As an alternative, we can offer CX-treatment in Brown (please enquire for details).

Which glues and fixings can I use?

Most standard wood glues will bond Wolmanit® CX-treated wood (when dry) but we can give specific advice if requested. Wolmanit® CX treated wood is not corrosive to metal fixings but care should be taken to use appropriate products. Hot-dipped or stainless fixings should be used for outdoor applications to protect from atmospheric corrosion. To ensure stability, fixings should be added once the timber has been treated. Always use the appropriate fixings such as proprietary deck screws for attaching deck boards to sub-frames. Guidance on the suitability of various fixings for both indoor and outdoor use can be found in EUROCODE 5 (BS EN 1995).

How do I dispose of treated timber waste?

All treated timber waste should be segregated and disposed of through an approved contractor. Treated timber waste should not be made into animal bedding or burned except in approved facilities.

Does it conform to current European Standards?

Wolmanit® CX conforms to the service expectations set down in BS EN 599, Use Classes 1-4. The UK interpretation of this document is BS 8417:2003. Wolmanit® CX is also included in the Wood Protection Association Manual.

How do I handle the treated wood safely?

Wolmanit® CX treated timber is not classed as hazardous. Once surface dry it can be handled safely and is suitable for children’s playground equipment. As is the case with any wood, treated or not, goggles should be worn when rip-sawing and gloves will protect from splinters.

Does Wolman supply any maintenance products for the treated timber?

Wolwax® Refresh can be used on timber such as decking boards to give them improved weather resistance and colour retention. Available in Clear and Brown grades. Wolmanit® C&T is a brush-on end-grain preservative that can be applied where the timber is cross-cut. This product will make sure the envelope of protection remains intact. Cut-ends once re-treated should not be placed in ground contact.