Bona 'Gapmaster' approx £5.50 per 330ml cartridge

Gap Master is a silicone free mastic designed for filling gaps between wood parquet blocks, around skirting boards and door thresholds. Based on a polyacrylate compound the material can be sanded and overcoated with floor finishes. It contains no solvents, is odourless, can be used on all parquet finishes and retains a high degree of flexibility.

* For use in wide gaps in wooden floors, can tackle any gap too large to be filled by any other joint filling system
* Expansion: approximately 7%.
* High degree of flexibility
* Can be sanded and overcoated
* Solvent free
* Silicone free
* Available in 14 colours
* Drying time: After approximately 24 hours Gap Master may be sanded and lacquered.
Note The volume of product applied and the site conditions will affect this figure.

We Say: Good stuff this, Won't fall out.

Makes filling wide gaps in floorboards a possibilty as expands and retracts with the flooring, may be the expensive way round though, Tedious to apply, I feel slightly too thick consistency makes it difficult to squeeze out of the tube, Unika's version is that little bit thinner and easier to use.

Still the colours are good, We use bundles of Wenge.

Quality 9/10

Ease of use 7/10

Value 8/10