Fixing a sinking patio depends on the type of patio you have. For a paver patio, you can easily repair low spots by removing the stones, leveling the base with fresh gravel and sand, and tamping it down. For a concrete patio, you will need professional methods like mudjacking to lift the slab.
How To Repair A Paver Patio
A sinking patio costs $3 to $15 per sq. ft. to fix. The cost to repair sunken pavers or other sinking patio sections varies based on the problem size and scale. Methods like leveling, mudjacking, and slabjacking can deal with sunken sections.
No, you cannot simply put new polymeric sand directly over old, existing sand. For a durable, long-lasting, and non-peeling finish, you must remove the old, deteriorated sand to a depth of at least 111 inch (2.52.52.5 cm) or up to the full depth of the paver before adding new sand.
Mud jacking can lift a settled concrete slab by pumping a grout through the concrete and pushing it up from below. The process is sometimes called “slab jacking” or “pressure grouting”. 1 to 1 5/8th inch diameter holes are drilled through the sunken concrete block/slab at strategic locations to maximize lift.
Yes, mudjacking can be done as a DIY project. Homeowners can rent a grout pump, drill holes into the slab, and inject a mud mixture to lift the concrete.
Average Price to Raise a Patio
Raising three 8' x 8' sections of patio along the home up 2” would cost around $850- $1,200. Along with concrete raising, there are other improvements you can do to fix-up your patio.
Although polymeric sand hardens when wet, it doesn't stay that way forever. Over time, it starts to break down, leaving the joints between your pavers looking uneven and messy. The plastics in polymeric sand can end up in the environment. Polymeric sand combines regular fine sand and bits of plastic activated by water.
JOINT-IT SIMPLE is a fast, easy, long-lasting, and ready to use mix compound to fill joints of pavers, flagstones, and slabs permanently. The 44-pound bucket is available in 3 colors and comes with simple instructions. Unlike polymeric sand, this product leaves no hazing, dust, or stains on stone surfaces.
Properly installed and maintained polymeric sand typically lasts 3 to 10 years. The exact lifespan depends heavily on your local climate, foot traffic, and routine maintenance.
A 20-foot by 20-foot concrete patio runs between $3,200 to $7,200, including labor and materials.
Unless you're highly skilled, we recommend hiring a professional handyman to complete your masonry repair or brickwork. For example, installing (or even repairing) a brick walkway or fireplace requires experience working with masonry cement (mortar) and tools like a trowel, level, mason's line, joint striker, and more.
To remove a sunken paver, clear the joint sand, then pry it up using two flathead screwdrivers, putty knives, or specialized paver removal tools (like a paver popper or pruning saw) inserted into the joints. Work the tool around the edges to break tension, tapping surrounding pavers with a rubber mallet if needed.
Water Drainage Problems
If water doesn't drain properly, it stays trapped under the pavers and softens the ground. That soft ground shifts more easily, causing the pavers to slide or sink. You're left with puddles, sloped walkways, and standing water that eats away the layers below.
Dry grouting uses sand and cement to fill the gaps in paving by brushing it in. The cement is moistened by natural moisture, rather than using water or pre-mixed wet cement. Building sand or Silica Sand is ideal for this type of joint filler, though there are a number of sands that can be used.
Sealing pavers is a significant maintenance commitment that often makes surfaces slippery, particularly around pools. It requires regular, costly reapplication every 2–5 years, can cause hazy discoloration if applied incorrectly, and traps moisture if done too soon.
When sand magically "turns into concrete," you are most likely thinking of Polymeric Sand. It looks and pours like regular sand, but when activated with water, it solidifies into a firm, durable bond.
Answer. Yes, Dawn soap can be used to clean pavers. Mix a few drops of Dawn with water, scrub the surface with a brush, and rinse thoroughly. However, for tough stains or large areas, a specialized paver cleaner may be more effective.
No, you cannot simply add new polymeric sand over an old layer. Doing so will cause the new sand to flake, peel, and wash away. Because polymeric sand relies on a binding agent activated by water, a new layer cannot bond properly to an already cured, hardened, and dusty surface.
Epoxy and resin-based jointing compounds (like EASYJoint or Joint-It) are widely considered superior to polymeric sand. While polymeric sand is a budget-friendly choice for locking pavers, resin formulas outperform it by offering permanent flexibility, superior drainage, and the ability to install in wet weather.
Drainage and Weather Considerations
Drainage is often raised as a concern with polymeric sand. It does allow water through, just at a slower rate than loose sand. When the base beneath the pavers is properly prepared, this is not an issue.
Polymeric sand not hardening is usually caused by improper watering, uncooperative weather, or drainage issues. To fix it, you will generally need to scrape out the uncured sand, let the joints dry completely, and reapply fresh sand.
Coca-Cola does three main things to concrete: it slows down the curing process (acts as a retarder), etches the surface to expose decorative aggregate, and removes tough stains. This happens because of the soda's high sugar content and phosphoric acid.
Why Leveling Is Often the Cheaper Option. Let's be honest: in most cases, concrete leveling is cheaper than replacement. You're working with what you've already got, so there's less demolition, less material, and less labor. I've seen leveling jobs that cost a third of what replacement would have run.
If you want to raise the height of a floor, the cheapest and easiest way is to add a thick underlayment designed for the job. There are other options too like adding a framed wooden subfloor or floor leveling compound before installing new flooring.