Tongue & Groove Boards Green – 120 x 18

Our Green Tanalised Tongue & Groove (T&G) boards offer a sleek, flat finish with a decorative “V” groove at the interlocking joint. Unlike shiplap or loglap, which have distinct curves or overlaps, these boards provide a contemporary, flush surface that is equally popular for both traditional and modern garden designs. With a finished thickness of 18mm, these boards are significantly more substantial than the 12mm alternatives typically found in the UK. This extra thickness provides exceptional structural rigidity and resistance to twisting, making them the industry standard for constructing bespoke garden gates, solid fence panels, and premium garden rooms. Each board is pressure-treated with a green preservative to protect the timber against rot, fungal decay, and insect attack. We stock a comprehensive range of lengths—2.1m, 3.0m, 3.6m, 3.9m, and 4.2m—allowing you to select the ideal size to minimise waste and ensure a seamless, professional finish on projects of any scale. Versatile V-Joint Profile: Provides a clean, modern aesthetic with a subtle “V” detail that highlights the individual boards. Heavy-Duty 18mm Thickness: Offers superior strength and durability; ideal for areas prone to high wind or heavy use (like gates). Green Pressure Treated: Fully tanalised for long-term outdoor protection against the British elements. Smooth-Planed Finish: Precision-machined for a high-quality, splinter-free surface that is easy to handle and paint. Multi-Length Availability: 1.95m to 3.9m lengths available to suit everything from standard gate heights to wide-span cladding.