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CertainTeed Vinyl Siding Installation Guide
73
STUDfinder Installation System for
Oversized (16', 16' 8", 20' and 25') Panels
CertainTeed’s longer siding panels – 16'8" CedarBoards XL,
16' and 20' Monogram 46L and 25' Monogram 46XL – feature
8 nail slots every 16", with one of the 8 letters of the word
“STUDfind” centered directly under each slot. In 16" o.c.
applications, locate the first stud and follow the same basic
procedure described for standard size panels: note which
STUDfind letter appears below the first nail slot and go to
the repeat of that letter to find the next succeeding stud
(every 8th slot).
When installing longer Monogram or CedarBoard panels on 24"
centers, the succeeding studs are at every 12th slot; for example,
if you start at “T,” then the next will be at “i,” then “T,” then “i,” etc.
NOTE: Monogram XL 25' panels must be “center pinned” to
control expansion and contraction. To do so, locate the center
nailing slot of the panel and drive nails into both ends of the
slot (see illustration). This is only done for one nail slot per
panel.
NOTE: Ensure that nail/staple penetration is at least 3/4"
to comply with ASTM D4756 (specification for vinyl siding
installation). Also be sure to allow 3/8" for expansion and
contraction between panel ends and trim when install
temperature is greater than 40° F, and 1/2" for expansion
and contraction between panel ends and trim when install
temperature is less than 40° F.