Plaank® Exterior Slat Wall Panels | Walnut

Plaank® panels install using an interlocking tongue-and-groove system. Each pack contains two panels, and the installed width of a pack reduces by 20mm due to the joint. Fix directly to a prepared flat substrate (brick, concrete, timber frame, plasterboard) using the recommended Plaank® screws and joists. Cut with a fine-tooth saw.

Plaank® panels carry a 12-year residential warranty and an 8-year commercial warranty when installed with the recommended Plaank® accessories and per our installation guide. The warranty is void if panels are installed without our accessories or contrary to the installation guide.

Yes. Although Plaank® is engineered for exterior use, it works equally well indoors: bathrooms, hallways, kitchens, and feature walls. The waterproof composite and UV-resistant finish make it a low-maintenance choice for interior applications too.

The UV-stable composite finish on Plaank® does not require painting or staining and is not designed to accept either. If you want a different appearance, select one of the five finishes (Birch, Oak, Walnut, Grey, Black) rather than modifying the surface.

Exterior slat panels can be mounted on most flat structural surfaces including brick, concrete, timber frames, and plasterboard. Plaank® composite panels fix directly with screws; Nordic Outdoor® wood panels require pressure-treated battens and a ventilated subframe. Always check the specific product installation guide for substrate requirements.

Installation varies by product. Plaank® composite panels interlock with a tongue-and-groove system and fix directly to the wall. Nordic Outdoor® panels require a batten subframe with a ventilated air gap, drainage clearance of at least 200mm from ground, and an appropriate weatherproof membrane. Detailed installation guides are available on each product page.

Exterior panels are not primary insulation, but some products include insulation in the build. The Nordic Outdoor® Pro range features a stone wool backing for thermal performance. For all ranges, adding mineral wool or insulation board in the cavity behind the cladding significantly improves both thermal and acoustic performance.

Maintenance depends on the material. Plaank® composite panels require only occasional cleaning with warm soapy water. No oiling, sealing, staining, or painting required. Nordic Outdoor® wood panels (Flex, Design, Pro) benefit from exterior wood oil every 1 to 2 years if you want to preserve the original tone, or can be left to silver naturally. Fire-rated Nordic panels (FR Pro, FR Pro Aluminium) must not be oiled as this compromises the fire rating.

Plaank® composite panels use UV-resistant technology and maintain colour stability for many years. Nordic Outdoor® thermally modified pine is natural wood and will develop a silver-grey patina over time. A hallmark of the material, not a defect. If you prefer to keep the original warm tone, treat non-fire-rated Nordic panels with exterior wood oil annually.

Yes. Plaank® composite panels are fully waterproof, UV-stable, and engineered for permanent outdoor exposure. Nordic Outdoor® thermally modified pine is treated with high-temperature heat and steam, making it naturally resistant to moisture, fungi, and insects. Both ranges are suitable for long-term outdoor use on gardens, terraces, facades, and feature walls.

We offer free delivery to mainland UK on most orders. Delivery is typically 2 to 3 days from dispatch, and each product page shows its own dispatch time above the add to cart button. Delivery to Scottish Highlands, Northern Ireland, and offshore islands incurs a surcharge calculated at checkout. You are also welcome to collect from our warehouse in Leighton Buzzard, Bedfordshire.