GA-214-10e
4Pages

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Catalog excerpts

GA-214-10e - 1

Recommended GA-214-10 Levels of Gypsum Board Finish GYPSUM ASSOCIATION

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GA-214-10e - 2

The Finishing & Decorating of Gypsum Board Surfaces For many years contract documents describing how gypsum board walls and ceilings should look prior to final decoration with paints and other wallcoverings have included nonspecific terms such as “industry standards” and “workmanlike finish.” And, for as many years, wall and ceiling contractors have tried to fulfill their obligations by providing the finish conditions envisioned but not truly described. As a means of resolving a common problem, in 1990 four major trade associations concerned with the manufacture, erection, finish, and...

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GA-214-10e - 3

Levels of Gypsum Board Finish Some degree of sound and smoke control is provided; in some geographic areas this level is referred to as “fire-taping.” Where a fire-resistance rating is required for the gypsum board assembly, details of construction shall be in accordance with reports of fire tests of assemblies that have met the fire-rating requirement. Tape and fastener heads need not be covered with joint compound. Level 2: All joints and interior angles shall have tape embedded in joint compound and wiped with a joint knife leaving a thin coating of joint compound over all joints and...

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GA-214-10e - 4

Critical (Severe) Lighting Areas. Wall and ceiling areas abutting window mullions or skylights, long hallways, or atriums with large surface areas flooded with artificial and/or natural lighting are a few examples of critical lighting areas. Strong sidelighting from windows or surface-mounted light fixtures may reveal even minor surface imperfec- tions. Light striking the surface obliquely, at a very slight angle, greatly exaggerates surface irregularities. If critical lighting cannot be avoided, the effects can be minimized by skim coating the gypsum board surfaces, by decorating the...

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