Insects, wood-consuming fungi, dry rot and the natural elements of the weather are just a few of the threats facing timber-constructed projects. Failure to adequately protect your timber against these risks can incur significant costs in the future when these issues inevitably need addressing, which is why it’s important to add value to your timber by treating it from the start.
Suitable for dry internal timbers such as upper floor joists and truss rafters with the main risk being from insect damage. Treatment to UC1 will manage this risk effectively for the service life of the timber.
Suitable for internal timbers and would be specified if the timber might be at a slight risk of wetting. For example, tile battens and CLS framing (external walls).