The choice between soap and oil depends both on the desired look and on the furniture's existing treatment. You cannot assume that a new treatment can simply be laid over the old one and give a predictable result.
Start by identifying the finish. For unfamiliar or previously altered furniture, an assessment of the surface may be the right first step.
Compare on the correct wood type
See physical samples of the same wood species as the furniture. A treatment may be perceived differently on different wood species and in different lighting. Photographs are useful as inspiration, but should not stand alone when making a final decision.
Fritz Hansen describes soap treatment as a light finish and oil as a treatment that penetrates and gives a matte surface. The specific product may alter the result, for instance if it contains pigment.
Consider maintenance too
| Questions | What you need to clarify |
|---|---|
| What is fitted now? | The starting point for compatibility and preparation |
| What appearance would you like? | Colour tone, sheen and visible wood grain |
| How is the furniture used? | Daily load and cleaning requirements |
| Which product is chosen? | The specific guidance and documentation |
| Who carries out the work? | Method, test and responsibility for the result |
There is no single maintenance interval for all furniture. Follow the manufacturer's instructions and assess the actual surface.
A change requires a plan
If you wish to go from one treatment to another, the preparation must be clarified. An old surface can be uneven, and the furniture may have been treated several times with different products.
Do not assume that thorough sanding is always possible. With veneer or special details it may be necessary to choose another method. A sample should be planned so that an unexpected result does not damage a visible part.
Keep what you actually like
A new finish can change more than a single spot. Consider whether the aim is a uniform new look or to preserve the furniture's patina. Read the guide to restoration and preservation, before you choose an extensive change.
If soap is the existing and desired treatment, you can proceed to soap treatment of oak tables. For oil, choosing oil for indoor furniture is the relevant guide. Keep the product, method and care instructions together for consistent future maintenance.
