Treated Tongue & Groove Timber Boards
Our tongue and groove timber boards are crafted from high-quality, kiln-dried redwood for superior stability and a smooth, professional finish. Each timber tongue and groove board is pressure treated with Tanalith to provide long-term protection against decay, rot, and insect attack – making them perfect for outdoor applications.
Whether you need tongue and groove cladding for sheds, cabins, garden rooms, or fencing, our boards offer a strong and durable solution that combines functionality with visual appeal.
Key Benefits:
- Robust interlocking tongue and groove design for a flat, secure cladding finish
- Kiln-dried for reduced warping, twisting, and shrinkage
- Treated for enhanced durability and long service life
- Versatile – ideal for sheds, cabins, garden rooms, fencing, and other outdoor buildings
Available Sizes (nominal vs finished):
- 16mm x 125mm → finished thickness approx. 12mm, cover approx. 114mm
- 19mm x 100mm → finished thickness approx. 15mm, cover approx. 85mm
- 25mm x 125mm → finished thickness approx. 20mm, cover approx. 114mm
All of our tongue and groove timber boards are produced to Caldmark Quality Assessed standards, ensuring consistency, reliability, and excellent performance for your next project.
All prices are excluding VAT. Prices suffixed with “pm” are per metre. All prices are subject to change.
