Treated Carcassing Timber | Structural Timber for Construction & Roofing

Treated carcassing timber is the structural backbone of most modern UK construction projects. Used across roofing, stud walling, floor joisting, and general framing, it's the go-to choice wherever strength, stability, and long-term performance are required within a building's structure.

All timber in this collection has been kiln dried and pressure treated with preservative, giving each piece excellent resistance to moisture, fungal decay, and insect attack — making it significantly more durable than untreated alternatives. Whether you're working on internal stud walls or structural elements in exposed or semi-exposed environments, pressure treated timber ensures your build stands the test of time.

Our treated construction timber is graded to C24 — the most commonly specified structural grade in UK building projects — and is available in the standard CLS and sawn carcassing profiles used by contractors, builders, and joiners across the country.

At Nicks Timber, we've been supplying quality structural timber to the trade since 1856. That heritage means consistent stock, honest advice, and a reliable supply chain you can depend on whether you're pricing a one-off job or managing a rolling build programme. Our treated carcassing range is equally suited to professional trade accounts and retail customers tackling home improvement projects.

Order online for delivery, or contact our team for trade pricing and volume requirements.