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.

Concrete pour over existing slab forum.

In the video below i poured a new stamped concrete patio slab right over the old existing concrete. When wouldn t i want to pour new concrete over old concrete. However proper prep work is needed. It was originally poured in multiple sections so it had some seams that looked like cracks.

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. 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. The old concrete was over 20 years old.

Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab s lifespan. This includes removing sand dead leaves and gravel. There are cases when pouring new concrete over old just isn t a viable solution. A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years.

Use a 6x6 10x10 welded reinforcing wire in the new concrete to help prevent. Being the old slab is in pretty good condition you can pour directly over the old slab with 4 5 of new concrete. Pouringconcreteoverconcrete bondconcretetoconcrete mikedayconcrete in this video i m pouring a new concrete floor over an existing concrete floor. 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. Sweeping dirt s debris over the existing concrete slab will allow bonding to take place. How to pour concrete over existing concrete.