When pouring new mix over old concrete make the mixture stiffer than usual by adding less water.
Can new concrete be poured over existing concrete.
New concrete is commonly poured over old concrete which may have been damaged for any reason for repairing purpose.
It rolls or brushes on like paint very easy to install creates a bond between the old new concrete floors.
For this to be feasible the contractor needs to pour at least 2 inches thick use smaller aggregate and incorporate reinforcement such as welded wire mesh or fiber mixed into the concrete.
When we pour concrete floors over existing concrete floors and the new floor is less than 3 inches thick we use a product called weld crete to bond the two floors together.
The honest truth about this concrete patio make over.
Concrete surface suffers from wearing and damages over time disregard of its strength.
Spread the new concrete over the surface filling the entire area within the form you created.
A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years.
Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab s lifespan.
So you may ask if pouring new concrete over the old one is a better option.
Steel rebar is also a good idea if the slab is thick enough to allow it.
Add all of the concrete right away so none of the mixture has a chance to dry out.
For example you may want a new concrete floor in your basement to prevent water seepage.
Yes if done correctly you can pour new concrete right over existing concrete.
There s some things you have to take into consideration before you make your final decision though.
Whatever the reason you can pour a new concrete floor over existing concrete doing this will save you both time and money.
Perhaps you want a new concrete floor for your garage but you don t want the expense of having the existing floor removed.
If done properly new concrete can often be poured right over an existing slab.
Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab s lifespan.
The condition of the existing slab is the primary factor that determines how long the new concrete will last.
However this approach is not suitable option unless the existing concrete is in good shape structurally.
Apply the new concrete over the primer.
Make sure you have enough concrete to fill the entire area to the depth you desire.
We d say no since concrete doesn t have any bonding agents of its own to grip onto the new layer but it s a yes if you get a layer in between the two and help the top layer adhere to the surface beneath.
A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years.