Concrete Pour Over Existing Slab Forum

Pouring concrete over the existing one.

Concrete pour over existing slab forum.

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. Steps involved in pouring concrete over existing concrete slab step 1. One of the best tools that can be clean all the debris out of crack is a stiff bristle broom. Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab s lifespan.

In the video below i poured a new stamped concrete patio slab right over the old existing concrete. How to pour concrete over existing concrete. Pouringconcreteoverconcrete bondconcretetoconcrete mikedayconcrete in this video i m pouring a new concrete floor over an existing concrete floor. Sweeping dirt s debris over the existing concrete slab will allow bonding to take place.

The old concrete was over 20 years old. 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. When wouldn t i want to pour new concrete over old concrete. This includes removing sand dead leaves and gravel.

There are cases when pouring new concrete over old just isn t a viable solution. Being the old slab is in pretty good condition you can pour directly over the old slab with 4 5 of new concrete. Use a 6x6 10x10 welded reinforcing wire in the new concrete to help prevent. The condition of the existing slab is the primary factor that determines how long the new concrete will last.

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