Furniture polishing

[edit] Introduction

Furniture polishing is the cleaning, maintenance, restoration or finishing of furniture surfaces to improve their appearance and, where appropriate, protect the underlying material. It is most commonly associated with timber furniture, although the appropriate treatment depends on the material, surface coating and condition of the furniture.

Polishing should not be regarded as a single treatment. Furniture may have finishes including wax, oil, shellac, lacquer, varnish, paint or other coatings, each of which has different maintenance and restoration requirements. Applying an inappropriate product can damage an existing finish or alter the appearance of the furniture.

[edit] Assessment and preparation

Furniture may require treatment when its surface has become dull, scratched, stained or uneven through use. Before polishing or refinishing, the material and existing finish should be identified where possible. This is particularly important for antique, historic or otherwise significant furniture, where removing an original finish can reduce its value or alter its character.

Surface preparation normally involves removing dust and appropriate surface contaminants using methods compatible with the existing finish. Minor surface imperfections may sometimes be reduced by cleaning or careful treatment, but polishing cannot generally repair deep scratches, gouges, structural damage, veneer loss or significant deterioration. Such damage may require repair or conservation before a finish is applied.

Furniture polishing may be appropriate for tables, chairs, cabinets, wardrobes, desks, doors and other timber furniture. Veneered and engineered timber products require particular care because aggressive sanding or cleaning can damage the relatively thin surface layer. Antique and historically significant furniture may require specialist conservation rather than conventional refinishing.

[edit] Types of furniture finish and treatment

Wax is commonly used as a furniture finish and maintenance treatment. It can produce a relatively soft sheen and enhance the appearance of the timber grain. Wax does not provide the same type of hard protective film as a cured varnish or lacquer and can require periodic maintenance. Excessive application can result in a build-up of wax on the surface.

Oil finishes can penetrate or partly penetrate suitable timber and can enhance its colour and grain. Different oils have different curing and protective properties, and their suitability depends on the timber and existing finish. An oil should not be applied over an incompatible existing coating without appropriate preparation.

Varnish forms a film on the surface of the timber and can provide protection against wear, moisture and staining. Varnishes are available in different formulations and levels of sheen. Applying varnish to existing furniture is a refinishing operation rather than simply polishing and may require removal or preparation of the previous finish.

Lacquer and other film-forming coatings may also be used on furniture. They can provide a durable and visually consistent surface but may require specific cleaning and repair methods. The distinction between cleaning, polishing and refinishing is important because each process has different effects on the existing surface.

Commercial furniture sprays and other cleaning products may be used for routine maintenance where they are compatible with the existing finish. They should not be assumed to repair scratches or restore deteriorated coatings. Products containing solvents or other aggressive ingredients can damage some finishes.

[edit] Furniture care after treatment

Regular removal of dust using a soft, clean cloth can help maintain furniture surfaces. Cleaning products should be selected according to the type of finish rather than simply the material of the underlying timber. Excessive moisture should be avoided, particularly where water could penetrate joints, veneers or unsealed surfaces.

Furniture should also be protected from conditions that can accelerate deterioration. Excessive sunlight can cause some finishes and timber surfaces to change colour, while changes in temperature and relative humidity can contribute to dimensional movement in timber. Spills should generally be dealt with promptly using methods appropriate to the finish.

Applying additional polish or wax too frequently can result in residues accumulating on the surface. Where a historic or valuable piece of furniture is involved, unnecessary cleaning, sanding or refinishing should be avoided and specialist conservation advice may be appropriate.

[edit] Common furniture polishing problems

Common problems include applying too much polish, using a product that is incompatible with the existing finish, attempting to remove deep scratches by aggressive abrasion and treating a veneered surface as though it were solid timber. These approaches can leave residues, produce uneven appearance or cause permanent damage.

Testing a treatment on a small, inconspicuous area can help establish its effect, but testing does not guarantee compatibility across the whole piece. Where the existing finish is unknown, unstable or historically significant, assessment by a suitably experienced conservator or furniture specialist may be necessary.

[edit] Related articles on Designing Buildings

• Furniture
• Timber preservation
• Wood and the Circular Economy
• Conservation Professional Practice Principles
• The Properties of Tulipwood
• Bamboo flooring
• Brass