Installation Guide

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ALSO SEE THE CARE AND MAINTENANCE GUIDE INCLUDED WITH YOUR PRODUCT
• The rst hole drilled should be the pilot hole. Use a 5/32” drill bit for the pilot holes. The pilot hole
should be deep enough to accommodate the full length of the screw. Screwing into the wood without
a pilot hole will cause outward pressure and may crack the wood.
• Then, drill a 3/8” expansion hole in the sub-top or screw block in the same location as the pilot hole,
being careful not to drill into the underside of the butcher block: repeat for each fastener. Tops that
are screwed down without expansion holes will also be void of warranty. (See Diagram 1)
• On the underside of the sub-top, place the washer on the screw and drive the screw into the pilot
hole in the butcher block. Be careful not to over tighten. Make sure the washer is large enough to
cover the expansion hole.
• Countertop joints should not be glued. Use the draw bolt fasteners provided or consult an in-
stallation expert in your area for acceptable installation practices. (Reference drawings for your
custom project if provided by John Boos & Co.)
• If your layout includes any overhangs, note that overhangs of 8” and greater will require additional
support corbels or brackets at least every 24 inches. (See Diagram 3)
INSTALLING BACKSPLASHES
Wood backsplash material may be screwed to the butcher block prior to installation by drilling pilot holes
and screwing from the bottom of the block into the backsplash material. (See Diagram 2) Expansion holes
are not necessary for the attachment of the backsplash.
• For the application of backsplash materials only, silicone caulk may also be used in lieu of attaching
with screws.
INSTALLING AROUND APPLIANCES
Additional considerations should be made when installing a butcher block countertop around appliances
and countertops with sink and stove cutouts.
• Where appliances have heat acting on the counter top, insulation should be installed to cut down heat
transference. Provide adequate ventilation.
• The tting of sinks and cooktops must not restrict the counter top from expanding and contracting.
Ensure that there is at least 1/4” clearance all around the appliance. Insulation should be installed
around cooktops. Rubberized joint sealant should be used in sink applications.