E-H

Spray Coating and Foam Glossary E-H

January 18, 2010

Elastomer - A material which at room temperature is capable of being stretched repeatedly at least twice its original length 100% elongation and, upon release of stress, will return to its original dimensions.
EMULSION - A colloidal dispersion of one liquid in another. (See LATEX;
COLLOIDAL DISPERSION)
Epoxy - A class of synthetic, thermosetting resins, which produce tough, hard, chemical-resistant coatings and adhesives.
Expansion Joint - A structural separation between building elements that allows independent movement without damage to the assembly.
EXOTHERM - Heat generated by a chemical reaction.

Fast Set - A coating system with a very fast initial cure time, usually five seconds to one hour.
FEATHERED EDGE - The thin tapered outside edge of a polyurethane foam pass.
Filler - A relatively inert ingredient added to coating or polyurethane foam formulations to modify physical characteristics.
Finish Coat - The coating applied to the base coat to finish the lamina of an EIFS. The finish coat provides color, texture, water protection, dirt resistance and ultra violet ray resistance.
Fire Resistance - The ability of a building component to resist the spread of fire.
Flame-Retardant - A substance that is added to a coating or polyurethane foam formulation to reduce or retard its tendency to burn.
FLASH COAT - A thin initial pass of a spray-applied material.
Foam Stop - The roof edge treatment upon which polyurethane foam is terminated.
FRIABILITY - The tendency of a material or product to crumble or break into small
pieces easily.

Glass Eyes or Glass Windows - Thin clear membrane that forms over elongated polyurethane foam cells. Glass eyes may break when coated, forming a pinhole.
GLOSS - The shine, sheen, or luster of a dried film.
Granule - Size No. 11 ceramic aggregate embedded into wet coating over polyurethane foam for aesthetics, traction, and mechanical resistance.

Hardness - Size No. 11 ceramic aggregate embedded into wet coating over polyurethane foam for aesthetics, traction, and mechanical resistance.
HCFC - Hydrochloroflourocarbon. A second generation blowing agent for polyurethane foam.
Heat Sink - A cold substrate that absorbs the SPF exothermic heat, slowing down the reaction and / or rise of the polyurethane foam or coating.

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