Concrete Pour Over Existing Slab Forum

Use a 6x6 10x10 welded reinforcing wire in the new concrete to help prevent.

Concrete pour over existing slab forum.

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. 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. Steps involved in pouring concrete over existing concrete slab step 1. Sweeping dirt s debris over the existing concrete slab will allow bonding to take place.

It was originally poured in multiple sections so it had some seams that looked like cracks. 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. A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years. Cleaning old concrete surface.

How to pour concrete over existing concrete. There are cases when pouring new concrete over old just isn t a viable solution. In the video below i poured a new stamped concrete patio slab right over the old existing concrete. The condition of the existing slab is the primary factor that determines how long the new concrete will last.

Pouring concrete over the existing one. The old concrete was over 20 years old. When wouldn t i want to pour new concrete over old concrete. Being the old slab is in pretty good condition you can pour directly over the old slab with 4 5 of new concrete.

Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab s lifespan. Pouringconcreteoverconcrete bondconcretetoconcrete mikedayconcrete in this video i m pouring a new concrete floor over an existing concrete floor. One of the best tools that can be clean all the debris out of crack is a stiff bristle broom.