B - Quad-Lock Building Systems

PRODUCT MANUAL
Pre-Pour:
Before concrete is poured, have the electrician mark the exact location of all electrical boxes. Use the box as a template,
and use a felt pen to draw the shape of the box on the wall. Use an electric hot knife or hand saw to cut the foam away
to accommodate the box. Place the box in the hole and secure into place with spray foam. Be sure to check that boxes
are securely fastened in order to resist the pressure of a concrete pour. The electrician can now connect conduit to the
backs of the boxes at his discretion. Conduit should be secured into place with wire to the plastic ties. If the box does
not sit higher than the plane of the foam, use a “mud ring” to extend the box.
After-Pour:
Have the electrician mark the exact location of all electrical boxes. Use the box as a template and use a felt pen to draw
the shape of the box on the wall. Use an electric hot knife or hand saw to cut the foam away to accommodate the box.
Place the box in the hole and secure into place by drilling a hole through the box and into concrete with a hammer drill.
Use a concrete screw fastener (TapCon or equivalent) to affix the box firmly to concrete. Inspectors generally
discourage “shooting” boxes onto concrete with P.A.T. fastening devices, and will not approve adhesive caulk or spray
foam as a method to secure boxes. If the box does not sit higher than the plane of the foam, use a “mud ring” to extend
the box.
Wiring Runs:
Pre-Pour:
Conduit is placed in the wall cavity and connected to boxes or fixtures. Quad-Lock recommends that tie wire or plastic
zip ties be used to affix conduit to plastic Quad-Lock ties to avoid shifting during the pour. Double check to be sure that
all runs are complete and secured before pouring concrete. Use spray foam to seal gaps left in foam that might leak
concrete, and to secure boxes in place
Installation of conduit in Quad-Deck can be accomplished by cutting a shallow channel into the surface of the Quad-Deck
panels. Spray foam the conduit into place. It is permissible for conduit runs to pass through the T-beams, so long as it
does not displace reinforcing steel.
After-Pour:
Wiring runs can be made after concrete is poured by removing foam insulation to form a chase way. Conduit, sheathed
cable, or unsheathed cable (such as Type NM, if permitted) can be placed in the chase way and secured either to
concrete or with spray foam insulation. CONSULT LOCAL CODE REQUIREMENTS FOR SET-BACK REQUIREMENTS.
Regular Quad-Lock panels are 2¼" [57mm] thick, and can be cut back to concrete to easily provide a set-back of 1½"
[38mm] or more. Quad-Lock Plus Panels are 4¼" [108mm] thick, and can be cut open to easily accommodate conduit
runs up to 3¾" [95mm] in diameter. Many national codes require a minimum 1½" [38mm] setback from the surface of the
foam. Confirm this requirement in your area with your local electrical inspector.
When placing wire, conduit, or sheathed cable in the chase way, secure into place with daubs of spray foam at 3 ft. [1m]
intervals, allowing the cable to be open for inspection. After inspection, chase ways can be filled with spray foam to
preserve the insulation value of the wall. Spray foam must be rated for contact with polystyrene. Consult the Quad-Lock
list of approved companion products contained in this manual.
Recessed Lighting:
If recessed lighting is used in a Quad-Deck floor or in a Quad-Lock wall, it is recommended that light cans are cut into the
Quad-Deck or Quad-Lock. Low voltage fixtures should be used to minimize heat buildup inside the can.
July 2009 Chapter 2 – Design & Construction Details Page 91