Selleys Liquid Nails TimberFlex is a premium, flexible, trowel-grade flooring adhesive designed for bonding solid timber, engineered timber, parquet, and sheet timber flooring to concrete and timber substrates. Its advanced polymer technology is isocyanate-free, solvent-free, and low in VOCs, making it a safer and more environmentally friendly choice for professional flooring installations.
The high-modulus, semi-rigid formulation delivers exceptional bond strength while helping to reduce cupping, rafting, hollow spots, and drumminess. It also spreads easily across a wide temperature range and is simple to clean from pre-finished floorboards, tools, and hands before curing.
This product is sold individually or Pack of 20.
Features
- Flexible, trowel-grade flooring adhesive
- Suitable for solid, engineered, parquet, and sheet timber flooring
- Bonds to concrete, timber, and most common building materials
- High-strength, semi-rigid polymer formulation
- Helps minimise cupping, rafting, hollow spots, and drumminess
- Excellent wet grab and initial hold
- Superior coverage – up to 20m² per 10L pail (using the recommended Direct Stick trowel on a plywood substrate)
- Easy to spread in temperatures from 5°C to 40°C
- Easy to remove from pre-finished flooring, tools, and hands before curing
- Low VOC, solvent-free, and isocyanate-free formula
- Excellent ridge formation and stability
Instructions
- Engineered overlay (Prefinished and Bamboo) and most types of wood flooring to common substrates
What materials is this product suitable for?
- Plywood
- Particle board
- Pre-existing strip flooring and FC (Fibre Cement) sheets
- Concrete
- Acoustic matting
Please contact your store to confirm avaliability, as some stores may have a limited range.
How to Use
The following should only be used as a guide and the installer should apply all Australian Standards, BCA/NZBC requirements, and best practices when installing a timber floor with Liquid Nails Timberflex.
- All surfaces should be clean, sound and level to 3mm in 3m. Out of level floors will increase the risk of hollow spots under strip timber overlay.
- Liquid Nails VBS Vapour Barrier is recommended over concrete before applying Liquid Nails Timbeflex to prevent moisture migration and subsequent swelling of the timber overlay. Moisture content of the slab should be <5.5%, and moisture vapour transmission <15g/m2 per 24hr.
- Concrete surfaces should have a finish equivalent to that obtained when using a steel trowel.
- Grind concrete to remove high spots, surface contaminants and weak surface layers.
- Sand timber substrates to remove contaminants such as old glue or surface finishes and flatten any raised joints.
- Scoop or pour adhesive from the pail to the application surface. Use a Selleys Direct Stick trowel to spread as much adhesive as you can cover in 20 minutes. It is important to achieve at least 85% adhesive coverage between overlay and sub-floor to avoid hollow spots and drumminess. For direct stick to concrete use a 6mm v-notch at 13mm centres; for parquetry and direct stick of strip overlay to structural sheet timber use a standard 3.2mm v-notch.
- This provides the optimal spacing and height for adhesive ridges for bridging any gaps between overlay and sub-floor and wetting onto the underside of the boards. Set strip overlay or parquet directly onto prepared adhesive with a minimum of sideways movement using adequate pressure to ensure adhesive contact on each individual board.
- Fastening (or weighting) is recommended to secure timber during curing.
Limitations:
- Do not apply in greater thicknesses than that allowed by specified trowel (side movement and/or lifting may occur)
Handy tips
- Requires atmospheric moisture to cure.
- Must not be applied below 5°C.
- Selleys Technical Services should be consulted if any doubt exists in respect to floor contamination, or any concerns in relation to moisture.
- Should a self-levelling compound be required, consult manufacturer in relation to drying times and appropriate priming to adhere the compound to the substrate
- To protect timber from concrete slab moisture use Liquid Nails VBS Vapour Barrier.
Clean Up
- Spills and tools can be cleaned up with mineral turps before product cures.
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