Caution: The precision machined edges of Poly-Classic Craftsman column components can be extremely sharp. Use of appropriate
personal protection equipment is required.
Measure overall opening from
floor to beam or soffit (must have
structural pressure-treated post or
lally column for load support.)
Install blocking around load
bearing post (use pressure treated
lumber.) Final width of blocking
must be same width as inside of
Install blocking around center and
top of post to match step 2. (Center
blocking is optional.) Blocking may
be attached to deck/soffit instead of
post if necessary.
Trim shaft pieces at least ¼”
shorter than opening height (from
step 1). Trim ONLY from bottom -
top end is marked.
If you are going to use screws,
pre-drill/countersink all panels. See
joint diagram on next page to
determine which edge to pre-drill.
Lay 3 panels flat and apply
adhesive to center joints. (Polyurethane
glue is recommended.
Follow manufacturers instructions.)
Assemble three panels, using E-Z
If using screws, assemble three
panels together using coarse thread
galvanized screws (deck screws.)
Or if you are not using screws,
finish nail three panels together.
Place the partially assembled (3
panels) column around post and
Apply adhesive to final panel
and attach to shaft using E-Z Lock
Screw or nail final panel in
Screw or nail column to blocking
ONLY ON THE BOTTOM. Do not
attach at center or top (to allow for
Apply adhesive to mitered ends
of base moulding (9¼” tall) and
assemble around bottom of column
Fasten joints on base with screws
The TOP of the shaft should
NOT be fastened to the blocking,
and there should be at least ¼” gap
to allow for expansion (see step 4.)
There are TWO methods of
attaching the cap. First, apply
adhesive to mitered ends of cap
moulding (7¼” tall) and assemble
around shaft. Screw or nail joints.
Option 1: attach cap to soffit
with construction adhesive and
toenail to soffit. DO NOT ATTACH
cap to column shaft if the cap is flush
with soffit (allows expansion.)*
Option 2: Leave ¼” expansion
room above cap, and pin-nail the cap
to the column. Be sure pin-nails DO
NOT reach the blocking inside!*
Caulk edges of base, cap, and
nail or screw holes.
Clean surface of column with
cleaner recommended by the paint
manufacturer. Paint with 2 coats of
acrylic latex paint.
Please note the correct assembly of the E-Z Lock joint
shown at the left. The screws or nails MUST be installed
only in the edges shown (3 and 4). Installing on the other
edges may result in open seams. (Pre-drill if using screws.)
1) Glue both joint edges; slide 1st joint together
2) Push 2nd joint closed
3) Nail or screw this joint first
4) Nail or screw this joint second.
Panels are marked "TOP" - trim from the bottom only.
Cap and base pieces are also marked as "CAP" or "BASE".
Only use non-corrosive fasteners - galvanized, stainless
Always follow glue and paint manufacturer's instructions.
*Column must not be allowed to collect water, debris, etc. If
the top of the column extends beyond the soffit/beam, the
cap must be flashed with lead, copper, aluminum, etc. to