Instructions / Assembly
Installation
Instructions
Stud Spacing & Fasteners
The recommended span rating for direct
application to studs or over non structural
sheathing is contained in the grade stamp on
the back of the panel.
Plywood siding panels with a 16”oc or
24”oc span rating can be installed over
studs spaced 24”oc when applied over
nailable sheathing as dened in the nationally
approved National Evaluation Report
NER-133. Fasteners for attaching siding
should be nonstaining box, siding or casing
nails. For panels 1⁄2” thick or less, use 6d
nails and 8d for thicker panels. Nail siding
6”oc along all edges (including in and outside
lapped edges) and 12”oc at intermediate
supports (in the eld) and along panel tops
and bottoms.
Weather Resistant Barriers
Panel siding is designed to be installed
without the use of weather resistant barriers
like building paper, either direct to framing
or over approved sheathing provided that all
joints occur over framing and are protected
with a continuous batten, approved caulking,
ashing, vertical or horizontal shiplaps or
otherwise made waterproof. A weather
resistant barrier like building paper, should
be applied when mandated by applicable
model building codes. Also, horizontally
installed grooved siding must have all vertical
butt joints backed with weather resistant
building paper. Siding installed over foam
sheathing including minimum fastening
requirements must be in accordance with
the relevant provisions of the applicable
model building code.
Panel Joints
All panel edges must be backed with
reinforcing solid lumber framing or blocking.
Panel edges should be spaced 1/8” to allow
for expansion and contraction due to
climatic changes. Vertical panel joints require
no caulking if they are ship lapped, backed
by building paper or covered by battens.
Horizontal panel joints should be ship lapped,
overlapped or ashed. Butt joints should
be caulked at intersections with inside and
outside corner trim, window and door
trim and vertical butt joints when installed
without building paper.
Additional installation information is available
from TECO at www.tecotested.com
Siding Finishing
Recommendations
Edge Sealing
All plywood panels experience faster
moisture penetration through panel ends and
edges. As a result, edges and ends should be
sealed. Edge sealers help to minimize sudden
changes in panel moisture content due to
normal climatic changes after installation.
Surface Preparation
Panel surfaces should be free from dirt
and loose wood bers. All nishes should
be applied as soon as possible after panel
installation. Apply nishes during favorable
weather conditions and always follow the
nish manufacturer’s specic application
recommendations for plywood products.
Use only rst quality nishes and apply
according to the application rates
recommended by the nish manufacturer.
Rough sawn surfaces may require up to
twice as much nish as smooth or scratch
sawn surfaces. The initial coat should be
applied by brush. Sprayed on nishes should
be either back brushed or back rolled
while wet. Additional coats may be applied
conventionally.
Recommended Finishes
Solid Color Stains
Two coats of a high quality oil base or latex
opaque stain help mask color variations
between wood repairs and the surrounding
wood. Face grain is also masked with opaque
stains but allows rough sawn textures to
remain visible. It is also recommended
that the desired nish be applied to a
representative panel sample which contains
typical color variations and repairs to ensure
that the panel’s nished appearance is
acceptable.
Acrylic Latex Paint
If a painted nish is desired, an acrylic latex
paint system composed of at least one
stain resistant primer coat and topcoat is
recommended for textured siding. Acrylic
latex produces a durable nish that masks
textured surfaces more than an opaque stain
and can obscure grain and color differences.
Again it is imperative to follow the paint
manufacturer’s recommendations for
plywood siding application.
Premium Siding Products