I have been doing research for a long time about the difference between post-tension foundations vs rebar foundations. I have not found a definitive answer so I decided to go out and find out for myself which is better in order to get less surface cracking. The latest price increases in rebar made me realize it was time to find out. If we can get the same or better quality and save some money that we can pass on to our customers, it's a win-win situation.

(Update 7.19.18: Post tension foundations cost about the same, and in some instances, more than rebar due to the extra steps needed after foundation has been poured. Pre-tension tendons, post tension tendons, inspection, cut cables, plaster foundation. Extra trips and extra labor offset the small savings obtained from using tendons over rebar. However, we are indeed experiencing less cracking with post tension, so we will keep using it)

Rebar is "Old School". It has worked for a long time and it still works. But post-tension also works, and some say it works even better. Post tension uses steel tendons that will be tightened after the foundation has had time to cure. Many say it's better because hairline cracks will not form as easily. Some say it doesn't matter, and concrete will crack either way. We have decided to do two or three slabs in post tension and we will keep track of how they perform vs. rebar. We will keep you updated.



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