If you want to raise the level of the existing concrete you need to pour a topping slab or asphalt. You might get by for a while with a loose mix with dry, fresh cement added as a binder and wetted afterward to harden it up but the durability will be pretty crap.
How do I increase the height of a concrete slab?
If you don’t want to go to the trouble of raising the height of the entire floor, you can apply floor leveling compound just to the area around the doorway. Apply the compound and feather it out with a trowel for several feet or more into the dining room.
Can you add a layer of concrete over existing concrete?
Yes, you can put new concrete over old concrete providing there are no issues such as significant cracks of frost heaves with your existing concrete. A new layer of concrete should be about two inches to ensure an even, strong coverage.
How do you raise an existing concrete floor?
The easiest way is to use a self-leveling compound, also called liquid floor underlayment or floor resurfacer, within sections of level-cut rails. The material flows out like thick syrup, then hardens into a smooth, perfectly level surface, sometimes in less than an hour.
Can you expand an existing concrete slab?
A hammer drill will make this much, much easier. Once the 6” hole was drilled, I injected some epoxy into the hole and then inserted a 12” piece of rebar (1/2” diameter) into the existing slab about 6” – leaving 6” to extend into the new concrete.
How do you join two concrete slabs together?
Tie Into the Existing Slabs
When you’re joining two concrete slabs, connect the two with rebar to keep them at the same height. Drill the holes as deep as you can (the entire length of the bit) so the rebar fits snugly into the holes. Insert chunks of rebar and tie them into the grid.
How thick does a concrete overlay have to be?
How Thick Should Concrete Overlay Be? The typical acceptable thickness for many contractors is between ¼ to 2 inches thick. Technically concrete overlays can be as thin or as thick as you want.
Is concrete overlay a good idea?
They’re Strong and Durable
You can expect your floor coatings to last as long as your floors – which can be your whole life. You won’t have to replace your floors every decade or so, the way you would with other flooring types. The only reason you’ll have to change your floors is if you want a new look.
Do concrete overlays last?
Another factor is the preparation before applying the overlay. Common mistakes are failing to clean the concrete properly or to profile it adequately. With proper installation and maintenance, overlays are extremely durable and can last for decades, even in harsh climates.
Can you skim coat over old concrete?
Skim coating refers to the process of thinly applying mud or plaster to a wall to repair it and improve its attractiveness. And while people commonly do it on drywall, one can also do it over concrete surfaces. For concrete, skim coating involves applying a thin layer of cement mixture over a concrete surface.
What is concrete topping?
Topping concrete is defined as a layer of high strength concrete placed on an old, worn out concrete surface to provide a dense, abrasion-resistant surface, to increase structural depth and strength of the base concrete. Fig 1: Section of topping concrete over existing slab.
How do you make concrete topping mix?
Instead of using a 1 to 3 sand mix, use a mix consisting of 1 part cement, 1 1/2 parts sand and 2 parts 3/8-inch gravel or stone. After the old base has been roughened and cleaned, prepare a grout of 1 part cement and 1 part water.
What is the purpose of a topping slab?
A topping slab is defined as the overlay which is designed in order to provide a dense, abrasion-resistant, and finished floor surface for multiple purpose use such as providing a wearing course to support traffic loads in parking facilities.
Can ardex be polished?
Perfect Edges on ARDEX PC-T™ with WerkMaster!
What makes the WerkMaster Polished Topping System (PTS) unique is it allows the topping to be polished right to the edge. Utilizing WerkMaster’s Patented Octi-Disc Technology results are achieved faster and easier than any planetary system that Ardex has approved to date.
