Aluminum Honeycomb
Sub-Top Panels

• Water Resistant
• Overhang Stability
• Strength Tested
• No Formaldehyde

SAFEBOARD™ OSP (Overhang Support Panel) is a plywood sub-top replacement panel. After purchasing top quality stone, your project now deserves the best installation materials. SAFEBOARD™ OSP is constructed to last and provide worry-free enjoyment of your beautiful stone countertops. Avoid long-term problems that plywood sub-tops can cause such as warping and bacterial growth. Unlike plywood, SAFEBOARD™ OSP is:

• Water and Moisture Resistant
• Rigid and Durable Aluminum
• Safe and Sanitary

Plywood absorbs water and warps over time. Not to mention the mold and formaldehyde. YES, plywood frequently contains formaldehyde. SAFEBOARD™ OSP is utilized in the stone and tile industry as a safe and sturdy alternative to plywood for kitchen, bathroom, and outdoor countertops.

With SAFEBOARD™ OSP there's no more need for corbels, or engineering metal frames to support an overhang. Made up entirely of high-durability aluminum, a strategically engineered honeycomb core is bonded between two rigid skins to create incredible strength.

SAFEBOARD™ OSP comes with a pre-applied primer for a stronger bond to substrates. This pre-applied primer is blue and must be installed facing up.

The side of OSP with the pre-applied primer applied must be the side that your stone is bonded to.

For a proper installation, the following steps must be followed:

• The protective film on both sides of the OSP panel must be peeled off.
• The blue side (pre-applied primer side) must be installed facing up. Your stone must be bonded to this side.

• SAFEBOARD™ OSP is the first ever engineered sub-top system.
• Tens of thousands of SAFEBOARD™ OSP panels have been installed in the US.
• SAFEBOARD™ OSP is almost 4x more rigid than plywood.
• A 5/8" panel of SAFEBOARD™ OSP supports more weight than 3/4" plywood.
• Safely install a 16" overhang with a 5/8" panel of SAFEBOARD™ OSP.
• NO additional support needed. No corbels. No steel.

Click Graph to Enlarge

Installing SAFEBOARD™ OSP