IF YOU DO NOT PROFILE THE CONCRETE BEFORE YOU GRIND THEN YOU WILL GET BUBBLES IN YOUR FLOOR COATING THAT MAY POP AND BECOME CRATERS. THESE BUBBLES ARE CAUSED BY TRAPPED AIR (GAS) THAT IS IN THE AIR POCKETS OF THE CONCRETE JUST BELOW THE SURFACE. WHEN CONCRETE IS HARD TROWEL FINISHED IT LEAVES SMALL AIR CHAMBERS JUST BELOW THE SURFACE OF THE SLAB THAT MUST BE EXPOSED. IF THESE AIR CHAMBERS ARE NOT COMPLETELY OPENED UP THEN BUBBLES WILL APPEAR IN THE COATING AFTER THE TEMPERATURE INCREASES. SINCE GARAGES ARE NOT USUALLY AIR CONDITIONED AND BECAUSE OF THE SUN, YOUR CONCRETE WILL BE INCREASING (OUT-GASSING) MOST OF THE DAY. THIS OCCURANCE IS LITERALLY CALLED CONCRETE OUT-GASSING. PROFILING CONCRETE AND APPLYING A PRIMER COAT AS THIN AS POSSIBLE WILL PREVENT THIS OCCURANCE OF BUBBLES.

CHAPTER 5 - WHAT HAPPENS IF I DON'T PREPARE THE CONCRETE?

HOW TO INSTALL GARAGE FLOORS FROM A TO Z

(NOT 1, 2, 3)

Version 7.13.2019


BY DONALD EUGENE SANDERSON JR - HOUSTON TEXAS USA