Proper panel spacing is a simple installation step that can help prevent buckling, unnecessary repairs and project delays.
Wood panels naturally expand and contract as they adjust to environmental conditions. When panels are installed too tightly against one another, there may not be enough room for that movement, which can cause the panels to buckle.
Leave room for movement
APA recommends leaving a 1/8-inch space between panel edge and end joints. This gives OSB and plywood panels room for natural expansion as they adjust to their environment.
Proper spacing is especially important on large buildings, where the effects of inadequate spacing can be compounded. Buckling in wall panels can also become particularly noticeable once siding is installed, creating a wavy appearance along the building.
Learn from the experts
Check out the guides and video below from APA to learn about proper panel spacing and recommended installation practices.
Proper Spacing
1/8-inch spacing is recommended at all panel edge joints.
Spacing Tip: An easy way to maintain the recommended spacing is to use a 10d box nail as a guide for the 1/8-inch gap between panels. Spacer-type panel edge clips may also be used for roof sheathing applications.