Flexible Gap Filling for Parquet and Skirting
Bona's Gap Master is a silicone-free mastic built on polyurethane and acrylate, used to fill gaps between parquet blocks, around skirting boards and at door thresholds, as well as repairing damaged or cracked areas of a floor. Because it's silicone-free, it can be sanded flush and overcoated with a compatible lacquer once cured — something a standard silicone sealant would resist, since finishes generally won't bond to silicone.
Colour-Matched Sealant for Vinyl Flooring
QuickStep's Kit is a different product for a different job — an elastic, acrylic-based paste designed specifically for QuickStep vinyl flooring, used in tight spots where skirting boards or edge profiles can't be fitted. It's supplied in colours matched to QuickStep's own flooring ranges, so the fill blends in rather than needing to be painted or finished afterwards.
Common Questions About Mastic and Gap Fillers
Can I paint or lacquer over Bona Gap Master once it's dry?
Yes — it's formulated to be silicone-free specifically so it can be sanded and overcoated with a compatible lacquer, unlike a standard silicone sealant.
Is QuickStep Kit suitable for wood flooring?
It's designed specifically for QuickStep vinyl flooring ranges and colour-matched to them, so it's best used with that flooring rather than as a general-purpose wood floor mastic.
When would I use a mastic instead of a resin filler?
Mastic stays flexible once cured, making it better suited to gaps that need to move slightly, such as at skirting boards or thresholds. A resin filler mixed with sanding dust is more rigid and better suited to fixed gaps within the floor itself.
