
Solid Tongue and Groove Flooring (T&G Flooring)
Tongue & Groove solid timber flooring is available in both 12mm overlay and solid 19mm thicknesses.
Range of sustainably sourced timbers
12mm, 14mm, 19mm
Varies by profile
Random length packs
About Solid Tongue and Groove Flooring (T&G Flooring)
Big River sources solid timber Tongue & Groove flooring from a wide variety of merchants and mills, giving you a broader choice of species, profiles and thicknesses than a single supplier could offer. Whether you’re after a classic look for a new build or a renovation, there’s a solid timber option to suit.
Thicknesses
Solid Tongue & Groove flooring is available in 12mm overlay and solid 19mm thicknesses. The 12mm overlay profile suits installation over an existing floor, while the 19mm solid profile can be fixed directly to bearers and joists. Check the downloadable tech sheets for all available thicknesses, as these can vary by species and supplier.
Timber species
All the solid timber flooring Big River offers is sustainably sourced. The range includes popular Australian hardwoods such as Blackbutt, Spotted Gum, Ironbark, Blue Gum and Tallowwood, plus many more. As a natural product, each species has its own colour range and grain character, so you can choose anything from light and subtle tones to rich, deep colours. Please visit the specifications tab for the full list of available timbers.
Installation
Solid Tongue & Groove flooring can be secret-nailed or top-nailed, depending on the application. Secret nailing fixes through the tongue, leaving a clean surface with no visible nail heads, while top-nailing fixes through the face of the board. It can be installed directly over bearers and joists or laid over existing sheet timber floors.
For best results, follow the installation guidance in the tech sheets and use a qualified installer.
Get in touch
Visit your local Big River branch or give them a call to learn more about the range, discuss your project or check stock.
Technical Specifications & Variants
Full Specifications
| Widths | Varying widths - please speak to your local Big River Group. |
| Thicknesses | 12mm, 14mm, 19mm |
| Length | Random length packs |
| Profile | End-matched |
| Moisture Content | Range 9-14% AS2796 |
| Grades | Select Standard & Better Standard Feature |
| Species | A wide range of sustainably sourced timbers - subject to availability |
Where to Use Solid Tongue and Groove Flooring (T&G Flooring)
Flooring Applications
Suitable as a flooring substrate or finished floor surface.
Structural Applications
Suitable for structural and load-bearing applications.
Downloads & Documentation
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