With perimeter relief the maximum recommended control joint spacing is 50 feet.
Horizontal drywall control joint.
If fastened vertically every edge will land securely on a stud.
Tape recessed butt joints beginning with an 8 in.
Wide knife for the tape coat.
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.
These edges are located on the 4 foot long ends of the drywall sheet.
Also when drywall is installed horizontally you end up with an unsupported joint between each stud.
Depending on the individual drywall control joint product design and materials width and plastic vs zinc metal expansion control joints for plasterboard can handle up to about 4 10 of horizontal movement due to thermal or moisture related expansion or contraction.
I know it is easier for drywall installers to install and finish horizontally but this method adds difficulty for trim carpenters and i think adds weakness to the wall as well.
Drywall butt joints should always be staggered.
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.
When hanging drywall over wood studs and laying the sheets out or lengthwise across the direction of the studs it is almost impossible to avoid butt joints at some points along the wall.
For the following coats use a 12 in.
The edges of the two sheets of adjoining drywall have the same thickness as the rest of the drywall sheet.
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 maximum recommended control joint spacing for walls and ceilings without perimeter relief is 30 feet.
If the sheet is 1 2 inch thick the edges are also 1 2 inch thick.
This makes it easier for taping and finishing and increases the overall strength of the entire wall.
Trim tex offers several control joint solutions for preventing cracks in long runs of drywall and in high movement areas.
The best way to handle butt joints is to avoid them altogether by using sheets of drywall that will span the entire room.
