Bona Mix & Fill Plus – Waterborne Wood Floor Filler
Bona Mix & Fill Plus is a high-quality, waterborne joint filler designed for filling gaps and joints in wooden floors up to 5 mm wide. Formulated with a fast-drying, low-odour composition, it mixes easily with fine sanding dust from the same floor to create a perfect colour match and natural-looking finish. Suitable for use with all types of wood and compatible with Bona waterborne finishes.
Key Features
- Waterborne filler – low odour and easy to clean
- Fills gaps up to 5 mm wide
- Mixes with sanding dust for an exact colour match
- Fast drying and easy to sand
- Excellent adhesion to most wood species
- Compatible with all Bona waterborne primers and lacquers
- Solvent-free and environmentally friendly
Recommended Uses
- Filling joints, gaps, and nail holes in wooden floors
- Suitable for both solid and engineered wood flooring
- Ideal for parquet, plank, and strip flooring before finishing
Application Instructions
- Ensure the surface is sanded and free from dust and dirt.
- Mix Bona Mix & Fill Plus with fine sanding dust from the same wood species until you achieve a smooth paste.
- Apply evenly with a stainless steel trowel, pressing the filler firmly into the joints.
- Allow to dry completely (approx. 30–60 minutes depending on humidity).
- Sand the entire floor once dry, then apply your chosen Bona primer and lacquer.
Technical Data
| Brand | Bona |
| Product | Mix & Fill Plus |
| Type | Waterborne wood floor joint filler |
| Colour | Natural (can be tinted with sanding dust) |
| Gap width | Up to 5 mm |
| Drying time | 30–60 minutes |
| Coverage | Up to 8–10 m²/L depending on floor type |
| Packaging | 5L |
| Cleaning | Water |
| Compatibility | All Bona waterborne primers and lacquers |
| Use | Interior wood floors |
| VOC content | Approx. 1% (very low) |
| SKU | UFSBONAMIXFILLPLUS5L |
FAQs
How wide can the gaps be when using Bona Mix & Fill Plus?
It effectively fills gaps up to 5 mm wide between floorboards.
Can I use it with any wood type?
Yes – it’s suitable for both softwoods and hardwoods, including oak, ash, beech, and maple.
Does it shrink after drying?
No – it has excellent dimensional stability and minimal shrinkage when properly applied.
Is it compatible with Bona lacquers?
Yes – it’s fully compatible with Bona’s complete range of waterborne primers and finishes.
How soon can I sand after application?
Typically after 30–60 minutes, depending on humidity and temperature conditions.
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