Wax Coverage Calculator — Furniture Wax Quantities

UK furniture paste waxes use roughly 80g per m² per coat, so a standard 400g tin covers about 5 m² per coat (400 ÷ 80) — matching Liberon Black Bison (5-6 m² per 500ml), Briwax Original (4-5 m² per 500ml) and Fiddes Supreme (10 m² per litre). Apply thin coats and buff well — two thin coats give a better result than one thick coat. Thin wax-oil finishes (e.g. Osmo Wood Wax Finish, ~24 m² per litre) spread much further at about 35 g/m², so drop the Spread Rate to ~35 for those.

Yes. Wax over varnish adds a soft sheen and extra protection. Apply a thin coat, let it dry 15-20 minutes, then buff vigorously with a soft cloth. Do not wax over water-based finishes intended for floors as it makes them slippery.

A wax finish on furniture typically lasts 3-6 months before needing a refresh. High-use surfaces like tabletops may need waxing monthly. A quick buff between applications maintains the sheen.