Wood is a natural product and is therefore prone to attack from moisture, insects and weathering.
Although wood is often used for its attractive grain, it can be further enhanced by the use of wood stains or colour washes to change its colour or shade. These are often combined with varnish to provide additional protect for the wood.
More importantly, finishes for wood should preserve the material. Wood can degrade in dry conditions as well as wet condition and is susceptible to wet and dry rot.
The following chart lists the main finishes for woods. How they are used depends on the function and aesthetic requirements of the product. For instance, a chopping board would not be oiled or waxed as it would contaminate the food. A cricket bat is oiled as a varnish would chip away in use.
There are three terms associated with finishes.
Materials may be self coloured.
Materials may be self finishing.
Often these types of material will not require a surface finish applied but they may be applied for aesthetic reasons.
Materials may have a surface finish applied or they can be left unfinished.
Finishes can be applied, coatings, preservatives or a combination of these.
There are to main reasons for finishing a material: to protect (preserve) or to enhance (aesthetic).
Materials produced in the required colour
A surface finish to enhance or preserve the wood. These are usually, Oil (Teak or Danish), Wax, Varnish, Stain, Paint.