FDA – Food & Drug Administration
Fading – Loss in brightness of color due to exposure to light, heat or weathering.
Fan Pattern – Geometry of spray pattern.
Fast Drying – Dry to recoat in less than two hours, quick hardening paint.
Feathering – Tapering the edge of dried paint film with sandpaper.
Ferrous – Containing iron.
Ferrule – The metal band that connects the handle and stock of the paintbrush.
Filler – Extender; bulking agent; inert pigment; filler compound
Filler Strips – Strips made from specially treated wood, metal, fiber or plastic in the center of a paintbrush, creating a reservoir of paint, thereby greatly increasing the paint carrying capacity.
Film – Layer or coat of paint or other finish.
Film Build – Dry film thickness per coat.
Finish Coat – Last coat of paint or other finish.
Fire Retardant Paint – A paint which will delay flaming or overheating of a substrate.
Fish Eyes – Small holes in the surface usually caused by grease, oil or silicone contamination.
Flaking – A form of paint failure characterized by the detachment of small pieces of the film from the surface of previous coats of paint.
Flash Point – The lowest temperature at which a coating or solvent will ignite if spark or flame is present.
Flashing – Flashing is caused by inadequate sealing of surfaces with varying porosity. After painting flashing will result in a non-uniform sheen and shiny spots.
Flat – A paint surface that scatters or absorbs the light falling on it so as to be substantially free from gloss or sheen.
Flat Applicator – A rectangular shaped flat pad with an attached handle that is used to paint shingles, shakes and other special surfaces and areas.
Flexibility – Ability of a coating to expand and contract during temperature changes.
Floating – Separation of pigment colors on the surface of applied paint.
Flocking – A coating process that produce velvet-like surfaces.
Flow – The ability of a coating to level out and spread into a smooth film. Paints that have a good flow usually level out uniformly and exhibit few brush or roller marks.
Frosting – An extremely fine wrinkle on the surface of a coating generally caused by foul gases in a curing oven.
Fungicide – An agent that helps prevent mold or mildew growth on paint.
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