Pour Concrete Over Stone Wall

It s best to pour the concrete footings thick when building mortared stone walls.

Pour concrete over stone wall.

For example a retaining wall higher than 600mm usually needs engineering by a structural engineer which is easier to achieve with core filled concrete block on footings rather than just solid stone. If you re building a really big wall pour them even thicker taller because the concrete footing will need to support more weight. I feel like pouring new concrete that s two inches thick over old existing concrete that s solid and sound is plenty thick enough for most applications. Smooth the surface using a two by four or float then add texture as desired using tools or a broom.

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. Height vertical thickness of the concrete footing. Specifically you can make them at least 12 inches in height. It does depend on what purpose the wall is performing.

I don t like to pour new concrete any thinner than 2 inches thick when i pour over existing concrete. Using some small scraps of rebar tie them with wire between the two mats to keep them separated when you pour the heavy concrete. Pouring concrete over existing concrete sidewalk when pouring new mix over old concrete make the mixture stiffer than usual by adding less water. The concrete block wall takes the job of retaining while the stone is for looks only.

Spread the new concrete over the surface filling the entire area within the form you created. My last wall was basically twenty four inches thick but twelve inches thick is a minimum you should build. Excavate the soil to a depth of 8 inches allowing 4 inches for the gravel base and 4 inches for the concrete slab. Wet the concrete thoroughly and then cover it with the sheeting of your choice using bricks rocks or other heavy items to hold it in place.

After the lath is installed on the wall mortar is mixed and scraped onto the metal lath with a trowel. Sheets of lath installed higher up on the wall are centered above the lower sheets of lath so that the sheets are staggered like bricks on a wall. The soil should be graded or sloped so the excavation site s center is slightly. The minimum thickness i pour new concrete over existing concrete.

Remove the sheeting or blanket daily wet the. It sure is ok to put concrete against stone foundation i guess u mean something like plaster and not new wall just make sure to add good quantity of concrete against stones so that it binds stones.