Buy Treated Timber Online and In-Store

Designed with preservatives to protect its exterior from the elements, treated timber remains one of our most popular product ranges, regularly used for roof rafters, ceiling joists, timber framing and much more. Its specialised treatment prevents fungal and insect attacks, moisture build-up and rotting, allowing for a more durable building material.

At Mitcham Builders Merchants, we stock premium, long-lasting timber in a range of sizes, whether you're looking for 4x2 treated timber for carcassing or 3-inch roof firings. Our prices remain affordable without compromising quality, with the option to purchase in-store, click and collect or order online with fast delivery.

As leading building suppliers in Croydon, we're proud to have built an outstanding reputation and are always more than happy to advise on the best-suited options for your project. If you're unsure which type, length or width of treated timber you need, please do not hesitate to ask for guidance. We also stock an extensive range of fixings and tools, offering a one-stop shop for all your construction needs. You can contact us via our website or visit us in-store, where our full product range is available to browse in person, including 3x2 treated timber, 6x2 treated timber and much more.