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Later the summer I will be building my 20 I 24′ pole building type shop in place of a 12 X 18′ stick frame garage. I’ve had 2 different contractors tell me that they can pour a 2″ cap over the top of the existing slab, including the rest of the area to complete the 20 X 24’Islab. The original slab has some cracks but the transference to the new slab would be prevented by placing a thin styrene foam sheet in between these two. Is this a viable option to the cost and hassle of removing the old slab including the foundation? Any finishers out there with comments? Thanks. Greg…
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Replies
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Hi Greg,
You don't have the advice of 2 contractors, you have the advise of 2 wingnuts.
Do it right and do it once.
Take out the old and put in a new slab.
Gabe
*yeh.. Gabe is right.. yur gonna fight that old slab every step of the way...take it out.. hell, break it up and bury it if u want.. just don't bury it where ur gonnal dig your poles..we always put our gravel base in place before we dig the poles... the slab is gonna be a PITA.. and also force u into compromises u don't needif u leave it ,, it will form a hard section so your new slab will NOT get uniform bearing..
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That was what I was worried about. Doing something that would compromise my floor for the future. Thanks guys. Appreciate the info. Greg...
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Later the summer I will be building my 20 I 24' pole building type shop in place of a 12 X 18' stick frame garage. I've had 2 different contractors tell me that they can pour a 2" cap over the top of the existing slab, including the rest of the area to complete the 20 X 24'Islab. The original slab has some cracks but the transference to the new slab would be prevented by placing a thin styrene foam sheet in between these two. Is this a viable option to the cost and hassle of removing the old slab including the foundation? Any finishers out there with comments? Thanks. Greg...