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CertainTeed Vinyl Siding Installation Guide
140
Repairing Buckled Siding at the Joist
Vinyl siding sometimes becomes buckled between the first and
second floors of a newly built siding installation due to settling
and shrinkage of wet lumber and some framing practices. Using
“engineered” lumber for the joist greatly reduces the chances of
shrinkage and settling and can help prevent buckling of siding.
If, however, you do have a building with this situation, here is a
way to correct the problem using aluminum starter strip.
With a zip-lock tool, unlock the buckled panel from the panel
below by inserting the hooked end of the tool behind the return
leg of the buckled panel until the hook catches.
Pull down and “unzip” the panel.
Insert an inverted scrap piece of starter strip into the exposed
receiving lock of the lower panel.
With the scrap piece inserted into the lock, lay the upper panel
over the starter strip. The starter strip should be visible behind the
upper panel. Mark a line on the scrap piece where the return leg
of the upper panel meets the scrap piece.
Trim the starter on this line, saving the portion with the
locking edge.
NOTE: Cut the starter strip in short lengths to ease
handling and relocking.
Insert the trimmed edge into the lock of the lower panel.
Begin at one end and, using a zip-lock tool, pull the return leg
of the upper panel down to engage the upper panel with the
aluminum starter strip.