One of the practical advantages of hardwax oil over lacquer is the ability to recoat the floor without full sanding. When the oil finish has become depleted, worn or is no longer providing adequate protection, a recoat can restore its performance and appearance at a fraction of the cost and disruption of a full refinish. But for a recoat to work properly, the process needs to be approached correctly.
When to Recoat
A floor needs recoating rather than a maintenance coat when the depletion is widespread and the appearance has changed significantly across most of the floor area. Signs that a recoat is appropriate include: water is absorbed rather than beading across most of the floor; the surface looks dry, grey or lacks the depth and warmth of a freshly oiled floor; cleaning no longer restores the appearance; or the floor is noticeably more susceptible to staining than it used to be.
The distinction between a maintenance coat and a recoat is primarily about scale. A maintenance coat addresses specific depleted areas; a recoat addresses the whole floor. Both processes are essentially the same in execution; the difference is that a recoat requires cleaning and preparing the whole floor, not just targeted areas.
Preparation Before Recoating
The existing floor must be clean, dry and free of all residue before a fresh coat of oil can be applied effectively. Wax polishes, spray polishes and silicone products on the surface prevent the fresh oil from penetrating. Use Osmo Intensive Cleaner, Woca Intensive Cleaner or an equivalent degreasing product to remove all residue from the surface. Apply the cleaner, agitate with a scrubbing pad or buffer machine, and rinse thoroughly with clean water. Allow the floor to dry completely, which typically takes several hours.
After cleaning, assess whether the surface is open and absorptive enough for a fresh coat of oil to penetrate. If the surface has become compacted or polished from cleaning, a light screening with 150-grit to 180-grit abrasive may be needed to open the grain. This is not always necessary with hardwax oil floors, particularly if they have not been treated with incompatible products, but it produces a more even and consistent result when done.
Applying the Recoat
Once the floor is clean, dry and prepared, apply the hardwax oil recoat using the same method as the original application: thin, even coats with a Hard Wax Oil Applicator, microfibre cloth or brush. For Osmo Polyx Oil, a single thin coat applied across the whole floor is usually sufficient as a recoat on a floor that still has some underlying oil present. A second coat can be applied after the first is fully dry if the floor appears to need more depth.
For Rubio Monocoat, their Refresh Eco product is specifically designed for recoating. It is applied as a spray without any prior sanding and produces a genuine renewal of the oil protection in a single easy application. It can be used on any Rubio-finished floor that is otherwise in good condition.
After the Recoat
Treat the recoated floor as you would a freshly oiled floor: avoid washing for the first five to seven days, place furniture carefully with protection under legs, and allow the oil to cure fully before returning to normal use. The curing process continues for three to five days after the visible drying is complete.
- Whole-floor preparation is necessary before recoating: remove all residue and cleaning products
- Light screening may be needed to open the grain before oil penetrates
- Apply thin coat(s) of the same brand of oil used originally for best compatibility
- Rubio Refresh Eco provides an easy spray-on recoat for Rubio-finished floors
- Allow 5-7 days before washing after a recoat
A well-executed recoat on a clean, prepared floor can make a significantly worn oil-finished floor look almost new. It is one of the most cost-effective maintenance interventions available for any floor surface, and it demonstrates why hardwax oil is favoured in situations where the floor needs to be maintained and repaired practically over a long period without major professional involvement.
