
The Story
Redwood tongue and groove PTGV interior cladding in 25mm x 125mm is machined from Scandinavian redwood and features a V-jointed profile that gives walls and ceilings clean, precise lines. Available in lengths from 3.6m to 4.5m, it suits a wide range of interior timber cladding projects in both domestic and trade settings.
Specifications
| Property | Detail |
|---|---|
| Material | Scandinavian redwood (Pinus sylvestris) |
| Treatment | Untreated - supplied ready to finish |
| Profile | Tongue and groove, V-jointed (PTGV) |
| Nominal Size | 25mm x 125mm |
| Lengths Available | 3.6m, 3.9m, 4.2m, 4.5m |
| Use | Interior only |
What it's used for
- Feature walls in living rooms, hallways, and bedrooms where a natural timber look is wanted
- Ceiling cladding in garden rooms, home offices, and loft conversions
- Wall lining in workshops, garages, and utility rooms
- Tongue and groove panelling in studies, playrooms, or hobby spaces
Fitting and handling
Before fixing, allow the boards to acclimatise in the room where they will be installed for at least 48 hours - this reduces the risk of movement after fitting. Boards can be secret-nailed through the tongue at an angle into battens, keeping fixings concealed for a clean finish. Because this cladding is supplied untreated, apply your chosen paint, stain, oil, or varnish once fitted, and ensure cut ends are also treated to protect against moisture ingress.
FAQ
What does PTGV mean in timber cladding?
PTGV stands for Prepared Tongue and Groove V-jointed. The boards are machined on all four faces, with an interlocking tongue and groove along the edges and a V-shaped chamfer where boards meet, creating a neat, defined groove line across the surface.
Can this redwood tongue and groove cladding be used in a bathroom or kitchen?
This product is rated for interior use only and is supplied untreated. In high-humidity areas such as bathrooms or kitchens, it can be used if thoroughly sealed on all faces and edges with a suitable moisture-resistant finish, and provided ventilation is adequate. It is not suitable for exterior use.
What length should I order for a standard room?
For most domestic wall and ceiling projects, the 3.6m or 4.2m lengths cover the majority of applications without excessive waste. Measure your longest run first and choose the length closest above it. Nottage Timber Merchants stock multiple lengths so you can mix sizes to minimise offcuts.
Browse the full range of pine mouldings and interior timber profiles at Nottage Timber Merchants. We supply trade and retail customers across Bridgend and South Wales, with next-day delivery available to many local postcodes. Contact us directly for bulk order pricing.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Redwood tongue and groove PTGV interior cladding in 25mm x 125mm is machined from Scandinavian redwood and features a V-jointed profile that gives walls and ceilings clean, precise lines. Available in lengths from 3.6m to 4.5m, it suits a wide range of interior timber cladding projects in both domestic and trade settings.
Specifications
| Property | Detail |
|---|---|
| Material | Scandinavian redwood (Pinus sylvestris) |
| Treatment | Untreated - supplied ready to finish |
| Profile | Tongue and groove, V-jointed (PTGV) |
| Nominal Size | 25mm x 125mm |
| Lengths Available | 3.6m, 3.9m, 4.2m, 4.5m |
| Use | Interior only |
What it's used for
- Feature walls in living rooms, hallways, and bedrooms where a natural timber look is wanted
- Ceiling cladding in garden rooms, home offices, and loft conversions
- Wall lining in workshops, garages, and utility rooms
- Tongue and groove panelling in studies, playrooms, or hobby spaces
Fitting and handling
Before fixing, allow the boards to acclimatise in the room where they will be installed for at least 48 hours - this reduces the risk of movement after fitting. Boards can be secret-nailed through the tongue at an angle into battens, keeping fixings concealed for a clean finish. Because this cladding is supplied untreated, apply your chosen paint, stain, oil, or varnish once fitted, and ensure cut ends are also treated to protect against moisture ingress.
FAQ
What does PTGV mean in timber cladding?
PTGV stands for Prepared Tongue and Groove V-jointed. The boards are machined on all four faces, with an interlocking tongue and groove along the edges and a V-shaped chamfer where boards meet, creating a neat, defined groove line across the surface.
Can this redwood tongue and groove cladding be used in a bathroom or kitchen?
This product is rated for interior use only and is supplied untreated. In high-humidity areas such as bathrooms or kitchens, it can be used if thoroughly sealed on all faces and edges with a suitable moisture-resistant finish, and provided ventilation is adequate. It is not suitable for exterior use.
What length should I order for a standard room?
For most domestic wall and ceiling projects, the 3.6m or 4.2m lengths cover the majority of applications without excessive waste. Measure your longest run first and choose the length closest above it. Nottage Timber Merchants stock multiple lengths so you can mix sizes to minimise offcuts.
Browse the full range of pine mouldings and interior timber profiles at Nottage Timber Merchants. We supply trade and retail customers across Bridgend and South Wales, with next-day delivery available to many local postcodes. Contact us directly for bulk order pricing.

