HI IM DOING A CONSERVATORY USING THE DURABASE BASE DURING DIGGING OUT THE PADS THAT THE FRAME SIT ON IVE HIT SOLID SLATE ON TWO OF THEM IVE ONLY GONE DOWN ABOUT 12INCHS DOES ANYONE KNOW IF I NEED TO BRAKE THROUGH THE SLATE OR IS IT OK TO LAY CONCRETE ON TOP FOR THE FOUNDATION
