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Earth Colors:
Colors or colored pigments that are muddy in tone. Originally this term was related to the natural color pigments e.g. red iron oxide, ocher, umber, etc.
Earth Pigments:
The naturally occurring pigments obtained from soft rocks or from deposits such as ocher, umber, sienna, chalk, barites, clay and graphite.
Eggshell:
A finish with a gloss between flat and semi-gloss. The sheen resembles the surface on an eggshell. It is now an ambiguous term as the gloss levels now vary greatly between alkyd and latex, and between the different manufacturers.
Elasticity:
The ability of a dry paint film or material to stretch then return to its normal size or shape.
Elastomeric Coating:
A coating that has the ability to stretch to a specified length without breaking or tearing, then recover to its original length.
Electrostatic Coating:
A coating designed for application (or applied) by electrostatic equipment.
Electrostatic Spray:
The application of a coating using static electricity generated by the charging of the coating particles as they are atomized and by grounding a conductive substrate. The advantage is a minimization of overspray as the grounded article attracts the paint particles.
Elongation:
The stretching of a material or coating film. It is measured as a percentage increase in the length of a test specimen when it is stretched until it breaks. See ASTM D412 for additional information.
Enamel:
A hard, glossy, vitreous finish likened to enamelized (fire ceramic) potteries. Originally used for gloss alkyd/oil paints and varnishes. Now used for alkyd and latex coatings of varied gloss.
Epoxy Paint:
A coating material based on an apoxy resin
Epoxy Resin:
A resin produced from the reaction from film formers usually made from bisphenol and epichlorohydrin which contain the characteristics oxirane (epoxide) group or glycidal group. Epoxy resins are capable of curing through heat oxidization (epoxy ester) with polyamides, amines and isocyanates. Epoxies are generally clear, tough, adhesive, mechanically and heat stable, and abrasion and chemical resistant, but tend to discolor (yellowing) and chalk when exposed to UV light.
Estimate:
A general calculation used to size or coat a job.
Etch (ing):
To roughen a surface by the use of a chemical agent (often acid), prior to painting, to improve the adhesion of subsequently applied coating(s). This technique is most often used on metals and concrete. Etching is always followed by thorough water rinsing and drying.
Expansion Joint:
A seam in concrete, plaster, wallboard or stucco construction designed to control or relieve stress in that surface. Used to reduce the possibility of cracking. Also known as a control joint.
Exterior:
The outside surfaces of a structure.
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