Drywall Control Joint Standards

C475 c475m specification for joint compound and joint tape for finishing gypsum board.

Drywall control joint standards.

With perimeter relief the maximum recommended control joint spacing is 50 feet. It weighs up to 30 less than traditional 1 2 in. C514 specification for nails for the application of. C11 terminology relating to gypsum and related building materials and systems.

Includes installation of corner beads trim and control joints. The parameters for placement of control joints are specified in astm c840 standard specification for application and finishing of gypsum board. Referenced documents purchase separately the documents listed below are referenced within the subject standard but are not provided as part of the standard. Offering lightweight construction the sheetrock ultralight 1 2 in.

Offering lightweight construction the sheetrock ultralight 1 2 in. Amico drywall control joint deep v with removable tape is designed to help relieve stress in large areas of drywall or veneer plaster installations. Perforations and ridges on all surfaces that receive finishing compound or veneer assure excellent adhesion. 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.

The longest un broken section of drywall was less than 27 feet in its longest dimension. Hand and mechanical finishing with setting type and drying type compounds. While drywall is considered a flexible finish it will crack when movement occurs in the underlying structure. Complete guide to proper joint treatment and surface preparation for drywall construction.

Drywall control joints referred to in some products and literature with the misnomer drywall expansion joints are used prevent cracking in gypsum wallboard. A control joint shall be installed where a partition wall or ceiling traverses a. Drywall for easier lifting carrying and installation. The maximum recommended control joint spacing for walls and ceilings without perimeter relief is 30 feet.

In this 24 x 27 foot building area no drywall control joints were required. Gypsum board is icc certified for sag resistance and eliminates the need for separate wall and ceiling panels. Control joints does not exceed 2500 sq ft 230 m o section 20 3 4 ga 4 7 3 4 control joints in interior ceilings without perimeter relief 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. 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.

Addresses special environmental and lighting situations.