We cite drywall expansion joint installation specifications applicable construction.
Gypsum board ceiling control joints.
The maximum recommended control joint spacing for walls and ceilings without perimeter relief is 30 feet.
093 zinc control joint is typically installed from door header to ceiling from floor to ceiling in.
4 7 3 control joints in the gypsum panel products shall be specified by the architect or designer where any of the conditions described in sections 4 7 3 1 through 4 7 3 7 exist.
Supplement to construction dimensions magazine.
Drywall control joints or gypsum board expansion joints are used to control cracking in gypsum board ceilings walls.
With perimeter relief the maximum recommended control joint spacing is 50 feet.
Control joints does not exceed 900 sq ft 84 m o section 20 3 5 ga 4 7 3 5 control joints in exterior ceilings and soffits shall be installed so that linear dimensions between control joints do not exceed 30 ft 9100 mm and total area between control joints does not exceed 900 sq ft 84 m.
The parameters for placement of control joints are specified in astm c840 standard specification for application and finishing of gypsum board.
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Drywall or veneer plaster control joint clarkdietrich 093 zinc control joint is applied between abutting gypsum panels and is used to relieve stresses of expansion and contraction of drywall and veneer plaster systems in large ceiling and wall expanses over 30 in length.
4 7 3 7 control joints shall be installed where specified by the architect or designer as a design accent or architectural feature.
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