Concrete Pour Over Existing Slab Forum

The old concrete was over 20 years old.

Concrete pour over existing slab forum.

Steps involved in pouring concrete over existing concrete slab step 1. 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. In the video below i poured a new stamped concrete patio slab right over the old existing concrete. 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.

Use a 6x6 10x10 welded reinforcing wire in the new concrete to help prevent. A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years. The condition of the existing slab is the primary factor that determines how long the new concrete will last. Pouringconcreteoverconcrete bondconcretetoconcrete mikedayconcrete in this video i m pouring a new concrete floor over an existing concrete floor.

Pouring concrete over the existing one. There are cases when pouring new concrete over old just isn t a viable solution. This includes removing sand dead leaves and gravel. Cleaning old concrete surface.

However proper prep work is needed. 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. It was originally poured in multiple sections so it had some seams that looked like cracks. Sweeping dirt s debris over the existing concrete slab will allow bonding to take place.

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