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Category Information

Working with some of the world’s leading manufacturers, our branches are able to provide a multitude of timber pressure impregnated preservative and fire treatments to suit a wide range of specification requirements. Please contact your local Howarth Timber & Building Supplies for further details.


Good general use for internal or external use, the general multipurpose preservative gives reassurance that your wood is protected.

Woodworm Killer

What is Woodworm?

Usually signified by a lot of minute holes in a piece of timber, woodworm are actually the larvae a woodboring beetles, such as Weevils and Powder Post Beetles.

Woodworm has been a problem for centuries, and treating timber that has woodworm, can save you a lot of money in the long-run, even if you can’t see any. The reason being that they may leave behind their eggs which will of course create major problems for your wood in the future.

Howarth Timber & Build Supplies supply a range of Woodworm Killer products that are designed to penetrate deep into the wood, ensuring that it gets into all areas, and one application will protect your timber for years.