Drywall Control Joint Spacing

In this 24 x 27 foot building area no drywall control joints were required.

Drywall control joint spacing.

Don allen from the steel framing alliance came up with this month s question which deals with the definitions of expansion joints and control joints. Avoid gypsum board joints within 12 in. Addresses special environmental and lighting situations. Another part of the question concerned the bridging of a control joint in a building with a drywall soffit.

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. The longest un broken section of drywall was less than 27 feet in its longest dimension. Expansion and control joints. 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.

4 7 3 7 control joints shall be installed where specified by the architect or designer as a design accent or architectural feature. The maximum recommended control joint spacing for walls and ceilings without perimeter relief is 30 feet. Complete guide to proper joint treatment and surface preparation for drywall construction. 9 144 mm where employing long continuous runs of walls partitions or ceilings without perimeter relief.

Control joints does not exceed 900 sq ft 84 m section 20 3 6 ga 4 7 3 6 a control joint or intermediate blocking shall be installed where ceiling framing members change direction section 20 3 7 ga 4 7 3 7 control joints shall be installed where specified by the architect or designer as a design accent or architectural feature. Drywall control joints referred to in some products and literature with the misnomer drywall expansion joints are used prevent cracking in gypsum wallboard. Provide control joints spaced not more than 30 ft. Includes installation of corner beads trim and control joints.

With perimeter relief the maximum recommended control joint spacing is 50 feet. 305 mm of the corners of window or door frames unless installing control joints at these locations. Hand and mechanical finishing with setting type and drying type compounds. 093v fire rated 093v and hideaway expansion beads all provide 3 8 of protection for horizontal movement against the stresses of expansion and contraction and feature tear off strips to protect the center from mud to provide a clean finish.

Chapter 5 finishing drywall systems.