Where resin-based finishes fit
Wood surface finishes broadly divide into film-forming types (polyurethane, lacquer) and penetrating types (oils, waxes, and resin preparations). Film-forming finishes sit on top of the wood and protect by creating a hard layer. Penetrating finishes enter the wood fibres, consolidating the surface from within.
Pine resin preparations — whether raw resin dissolved in turpentine, rosin-based waxes, or commercial mixtures — fall into the penetrating category. This makes them well-suited for:
- Older wood with open grain that would not accept a uniform film finish
- Surfaces that need periodic refreshing without sanding
- Floors where a natural, low-sheen appearance is preferred
- Furniture restoration where the existing surface is oil- or wax-based
They are less suitable for surfaces in direct contact with water (bathroom floors, kitchen work surfaces) or where a hard, scratch-resistant finish is required.
Surface preparation
The effectiveness of any penetrating finish depends almost entirely on the quality of preparation. Resin-based products cannot hide surface damage — they reveal it.
Removing old finishes
If the surface was previously treated with a film-forming finish (varnish, lacquer), this needs to be removed before applying a penetrating resin product. Residual film finish blocks absorption. Stripping can be done mechanically (sanding, scraping) or with appropriate chemical strippers, depending on the existing coating type.
Cleaning
Remove all dust, grease, and contamination before application. For wooden floors, this typically means sweeping, vacuuming, and then cleaning with a mild, pH-neutral cleaner. Allow the surface to dry fully — moisture trapped in the wood will prevent absorption and can cause the finish to appear uneven.
Sanding
For a first application on bare wood, sanding to 120–150 grit is generally sufficient. Sanding to a finer grit closes the grain surface and can reduce absorption. For subsequent maintenance applications on an already-treated surface, light sanding is usually not required unless there is visible surface damage.
Surface compatibility
Resin-based finishes are compatible with untreated wood, and with surfaces previously treated with oil or wax. They are not directly compatible with surfaces that have existing film finishes, stained surfaces where colour consistency matters, or engineered wood boards with factory UV-cured coatings. When in doubt, test on a hidden area first and observe for 24 hours before proceeding.
Application
Application methods vary depending on the consistency of the product. Liquid preparations (rosin dissolved in turpentine) are typically applied with a clean cloth, brush, or foam applicator. Paste or wax-based products are applied with a cloth and buffed.
General application steps
- Ensure the room is well-ventilated. Turpentine vapours are flammable and irritating.
- Apply a thin, even coat — resin preparations do not need to be applied thickly. Excess product that does not absorb will sit on the surface and dry unevenly.
- Allow the first coat to absorb and dry partially before assessing whether a second coat is needed.
- Buff with a clean cloth or soft brush to even out the surface and remove any residue.
- Allow full drying time before use — this varies by product and ambient conditions, but is typically several hours to overnight.
Working in sections
For large floor surfaces, work in manageable sections to avoid walking on wet product. With turpentine-based preparations in particular, ensure adequate ventilation throughout — do not work in sealed rooms.
Drying and curing
Penetrating resin-based finishes dry as the volatile turpentine fraction evaporates and the rosin fraction oxidises and polymerises within the wood fibres. Initial surface dryness is reached within hours, but the finish continues to cure for several days. During this period, avoid heavy traffic on floors and avoid placing objects on treated furniture surfaces.
Curing time is affected by temperature and humidity. Cooler and more humid conditions extend drying. Do not apply in temperatures below 10 °C or above 30 °C.
Ongoing maintenance
One practical characteristic of penetrating finishes is that they can be refreshed without full stripping. When a resin-treated floor begins to show wear, cleaning followed by a fresh application to the worn areas is generally sufficient.
For routine cleaning of resin-treated floors, use a dry or lightly damp cloth. Avoid wet mopping — standing water damages any wood finish. Mild, pH-neutral cleaners are compatible; avoid strong alkaline or acidic cleaners, which can break down rosin-based finishes over time.
Disposal of materials
Cloths soaked in turpentine or turpentine-containing mixtures can self-ignite as they oxidise. Lay them flat outdoors to dry, then dispose of them as chemical waste according to local regulations. Do not store soaked cloths in closed containers.