Concrete – How to repair the degraded surface of a concrete slab and wall
concreterepair
I've never worked with concrete. Is there an easy way for a concrete newbie to repair this wall?
OR-
How do I fix it?
Here is another view, further back.
=================== Found these in a store ===============================
Will any of these products work for my issue?
Best Answer
Vinyl cement patch is what you're probably after. It's designed to bond well and handle impacts and movement in thin applications much better than concrete or mortar. It can be feathered to a thin edge.
Mix per the instructions on the package and apply with a wide putty knife or trowel.
Be aware that you won't have good results spanning from one concrete object to another. There's almost certainly seasonal movement between the two that will tear the patch apart. Use a control joint where necessary.
Instead of trying to fix the crack, first try figuring out what is causing the crack. You can fix a crack many times, but if you are fighting against something like water pressure (or one of the many other causes of cracks in concrete), you will never win. Once you find what is causing the crack, then look to mitigate the problem somehow (proper drainage in the case of water buildup), and then fixing it one final time will take care of the problem.
If the wall is unpolished it already offers enough grip for any other concrete based adhesive.
Just make sure its dust free..dampen the concrete wall with a sponge.. let the water drip and sink into the wall and then use a normal adhesive recommended to be used stone veneer direct to the concrete
If it is polished concrete then you will need to grind slits into the concrete so that the concrete can adhere, also taking care to get the concrete into the prepared slits.
You do not need to use any other chemicals that i know off. done it plenty of times when applying plaster direct on concrete or slitted polished wall.. sticks forever.
Just make sure not use adhesive that dries super fast.. just a normal drying adhesive. Drying to fast can cause it the "glue" to shrink and pull away from the wall before it bonds properly.. that is why the wall should also be wet before application
Best Answer
Vinyl cement patch is what you're probably after. It's designed to bond well and handle impacts and movement in thin applications much better than concrete or mortar. It can be feathered to a thin edge.
Mix per the instructions on the package and apply with a wide putty knife or trowel.
Be aware that you won't have good results spanning from one concrete object to another. There's almost certainly seasonal movement between the two that will tear the patch apart. Use a control joint where necessary.