Veneer finishing

Shadbolt veneered doors, panels and other products are supplied either fully finished or partly finished according to the intended final use and whether further processing by others is necessary. Many types of finish can be applied in our works by our own experienced craftsmen.

Products intended for direct use on site should be fully finished in our works; our factory-applied finishes can achieve a far higher quality and consistency than site-applied finishes. In addition, our finishing meets the requirements for credits in relation to VOCs under BREEAM or LEED; for more information see Indoor air quality and VOCs.

Choice of the correct finish will considerably enhance the quality and appearance of the final veneer effect. Our Technical Department will be pleased to advise on the best finish for any particular application. Samples of the chosen veneer and finish can then be prepared for approval before manufacturing.

LACQUERING

This is the standard treatment where a fully factory-finished product is required. It comprises high-solid polyurethane lacquer, giving a semi-matt finish (20% gloss).

SPECULA

A high-gloss clear polyester finish for veneered doors and panels, Specula has a Class 1 or Class 0 surface flame spread performance as defined by Building Regulations Approved Document B, Section 6 and Appendix A.

PAINTMASTER

Paintmaster (for doors and frames only) is an enamel satin lacquer finish available in any BS, NCS or RAL colour, applied over the veneer and finished with high-solid polyurethane lacquer.

It provides an extensive additional colour choice whilst retaining the character and grain of the underlying veneer, and is particularly suited to open grain veneers such as Crown Ash, for which it forms a better solution than staining.

The Paintmaster finish is economical and can be maintained in exactly the same way as a traditional lacquered, veneered door.

LIMING

Liming is a special decorative finish achieved by using a white liming paste or woodfiller, which is hand-applied by rag over the veneer surface. The excess is then wiped off, leaving the open grain areas highlighted by the liming paste which is trapped in the pores of the grain. This process is most suitable for open-grained veneers. After liming the veneer is finished with high-solid polyurethane lacquer.

TINTING

The grain of the veneer is sealed, then a pigmented lacquer is applied. After tinting the veneer is finished with high-solid polyurethane lacquer.

DYEING

The veneer leaves are immersed in dye within a pressure vessel so that the dye penetrates the full thickness of the veneer, giving a solid colour throughout. Light coloured timbers give the most effective and consistent results. After dyeing the veneer is bonded to the substrate and finished with high-solid polyurethane lacquer.

Note: some colour dyes (eg silver grey) may require the use of a UV inhibiting lacquer (not available for panels with Class 1 or Class 0 flame spread rating). Contact technical@shadbolt.co.uk for more information.

Because of the natural character and variation of timber, the colour effect itself is likely to vary in shade; it is therefore not possible to guarantee precise matching of a colour. Samples can be prepared for approval but these will be only a guide to the finished appearance.

STAINING

A water based stain is applied to the sanded timber veneer so that it penetrates into the grain. The face is then finished with high-solid polyurethane lacquer.

SOLID TIMBER

Where lippings, door frames and trims are to be supplied, it is not always possible to obtain suitable solid timber of the same species as the veneer. In these cases we will select a suitable comparable solid timber for the lippings and frames.

This can be stained to produce a close match or compatibility with the veneer, or to provide a contrast with the appearance of the door leaf.

PRODUCTS FOR FURTHER PROCESSING

Panels and other products which are to be processed further, for example in the manufacture of furniture and fittings, may be supplied primed, primed and sealed, or sealed with one coat of lacquer; this provides good protection to the surface during further working. We recommend that the final treatment should then be applied by others after manufacture but before delivery to site.