Concrete Pour Over Existing Slab Forum

One of the best tools that can be clean all the debris out of crack is a stiff bristle broom.

Concrete pour over existing slab forum.

Pouring concrete over the existing one. There are cases when pouring new concrete over old just isn t a viable solution. 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. It was originally poured in multiple sections so it had some seams that looked like cracks.

A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years. Cleaning old concrete surface. 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. 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.

The old concrete was over 20 years old. Steps involved in pouring concrete over existing concrete slab step 1. When wouldn t i want to pour new concrete over old concrete. Sweeping dirt s debris over the existing concrete slab will allow bonding to take place.

How to pour concrete over existing 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. This includes removing sand dead leaves and gravel.

However proper prep work is needed. 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.