TYPICAL SPALLED JOINTS and CRACKS
(For Defects Up to 1 1/2" wide)

Typical Spalled Joint	Repaired Joint

This detail shows our standard method of dealing with all spalled joints or cracks.

Never feather edge a repair!

1. Make cuts at the ends of spalls and remove as shown.
Cuts should be a minimum of 1/2" deep (3/4" is preferred).

Clear out debris and loose elements with narrow tools.
Vacuum or blow clear with compressed air.

Choke off base with silica sand. Install Spal-Pro 2000 (if access time is critical) or
MM-80 flush to the floor or slightly crowned.

Note: For joints up to 1/2" wide use MM-80 as a liquid. For wider repairs, use sand-modified MM-80. Mix MM-80 thoroughly; then add 1 part of silica sand by volume to make a mortar. This will give more deflection resistance to the MM-80 and extend material yield.