Concrete Pour Over Existing Slab Forum

When wouldn t i want to pour new concrete over old concrete.

Concrete pour over existing slab forum.

It was originally poured in multiple sections so it had some seams that looked like cracks. One of the best tools that can be clean all the debris out of crack is a stiff bristle broom. The old concrete was over 20 years old. I want to increase the size of the concrete slab floor from my old shed for my new sauna the existing floor slab is aprox 2 4 x 1 8mtrs.

Pouring concrete over the existing one. How to pour concrete over existing concrete. Here s the catch if the existing surface is somewhat in a structurally sound shape and elevating its height to a few inches won t be a problem you can certainly freshen it up with a new layer of concrete. If you re concrete has large cracks and the slab may still be moving due to freeze and thaw conditions or settling then a tear out and replace is a better solution.

Pouringconcreteoverconcrete bondconcretetoconcrete mikedayconcrete in this video i m pouring a new concrete floor over an existing concrete floor. A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years. Steps involved in pouring concrete over existing concrete slab step 1. There are cases when pouring new concrete over old just isn t a viable solution.

Cleaning old concrete surface. And i wish to increase the size to 2 4 x 2 4 mtrs it will not have any thing heavy on it but will have to deal with water and heat from the sauna. Sweeping dirt s debris over the existing concrete slab will allow bonding to take place. In the video below i poured a new stamped concrete patio slab right over the old existing concrete.

However proper prep work is needed. This includes removing sand dead leaves and gravel. Being the old slab is in pretty good condition you can pour directly over the old slab with 4 5 of new concrete.