WarmlyYours Cerazorb - Manual (Page 2)

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INSTALLATION INSTRUCTIONS
SURFACE PREPARATION
Surface must be structurally sound, clean, dry, and free from dirt, oil sealers or any contaminants that would prevent a good bond.
CeraZorb must acclimatize in their sealed packaging for 48 hours at a temperature of 65ºF (18ºC).
CONCRETE SLAB
Inspect concrete sub fl oor for any open cracks and fi ll with a high-grade patch. Remove any excess concrete lumps or residue that
may interfere with the installation of CeraZorb. The concrete slab should be fully cured, dry, smooth, fl at, and accept water penetration.
Concrete must be free of effl orescence and not subject to hydrostatic pressure. A good quality concrete waterproof sealer may be
required if moisture in the slab is above 10 percent.
GYPSUM SUBSTRATES
Gypsum substrates must have a PSI greater than 2000 and must fi rst be primed or sealed per manufacturer’s instructions.
WOOD SUBSTRATES
The sub fl oor should be permanently dry, smooth, fl at, and clean – free from dirt, grease, wax, paint, oil, or anything that would hinder a
good bond. Plywood sub fl ooring should be of a good grade. Variations in fl oor level over 1/8” within a 3-ft. span should be leveled before
installing underlayment. Any nails or other protrusions should be pounded fl at or removed. Sub fl oor should have L360 for defl ection.
THERMAL INSULATING & SOUND CONTROL UNDERLAYMENT
GROUT
CERAMIC TILE
CERAZORB
POLYMER-MODIFIED
THIN SET MORTER
MAPEI ULTRACONTACT® or ULTRACONTACT RS
or equivalent BOND COAT ADHESIVE
®