Tempo:
Coating Finishes
The choice of coatings and coating techniques can seem overwhelming. Moreover, terminology can vary from one manufacturer to another. This chapter explains the properties and applications for the major coatings used in house construction: paint, varnish, stain and lacquer.
effect on the physical properties of the cured paint film. Water and mineral spirit solvents are the types of solvent in most house coatings. Water solvent is more environmentally benign than mineral spirit solvent. Water solvent paint, varnish, stain and even lacquer products are available.
These types of coatings provide varying degrees of protection by retarding moisture fluctuation, reducing the effect of ultraviolet light, or providing increased resistance to abrasion. These products also accentuate wood grain and texture or give partial or full colour to wood surfaces.
Pigment: The primary purpose of pigment in a coating is to provide colour and hiding ability, but some pigments are used to make sanding easier, control gloss level or simply act as a filler. Colour pigments give paint colour and opacity. Those dispersed by the tinting machines used in paint stores allow colour matching and mixing to produce any conceivable colour for both water- and solvent-based products.
COMPOSITION OF COATINGS Paint, varnish, stain and lacquer have three major components: Solvent: The solvent in a coating product thins the pigment/resin mixture to make it flowable (easy to apply). During the drying process, the solvent evaporates and has no
Extender pigments are used to control the gloss of a coating. Gloss is the ability of a coating to reflect light. Generally, the higher the gloss of paint coating, the more washable and wear-resistant it is. Terms such as flat, satin, eggshell, semi-gloss and gloss describe gloss levels ranging from none to high. Since these terms
The choice of coatings and coating techniques can seem overwhelming. Moreover, terminology can vary from one manufacturer to another. This chapter explains the properties and applications for the major coatings used in house construction: paint, varnish, stain and lacquer.
effect on the physical properties of the cured paint film. Water and mineral spirit solvents are the types of solvent in most house coatings. Water solvent is more environmentally benign than mineral spirit solvent. Water solvent paint, varnish, stain and even lacquer products are available.
These types of coatings provide varying degrees of protection by retarding moisture fluctuation, reducing the effect of ultraviolet light, or providing increased resistance to abrasion. These products also accentuate wood grain and texture or give partial or full colour to wood surfaces.
Pigment: The primary purpose of pigment in a coating is to provide colour and hiding ability, but some pigments are used to make sanding easier, control gloss level or simply act as a filler. Colour pigments give paint colour and opacity. Those dispersed by the tinting machines used in paint stores allow colour matching and mixing to produce any conceivable colour for both water- and solvent-based products.
COMPOSITION OF COATINGS Paint, varnish, stain and lacquer have three major components: Solvent: The solvent in a coating product thins the pigment/resin mixture to make it flowable (easy to apply). During the drying process, the solvent evaporates and has no
Extender pigments are used to control the gloss of a coating. Gloss is the ability of a coating to reflect light. Generally, the higher the gloss of paint coating, the more washable and wear-resistant it is. Terms such as flat, satin, eggshell, semi-gloss and gloss describe gloss levels ranging from none to high. Since these terms
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