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Avatar for American Waterworks
American Waterworks
4.5(
171
)

Serving Harmony, MN and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"They did great. The entire surface was level and free from tripping hazards. It is important to have them seal the cracks because there will be water from snow melt and the concrete will move. This will get you the 5 yr warrantee just in case."
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time4 hrs
649 neighbors recently requested a quote
Recommended by91%of homeowners
Sackey Joles Asphalt
4.3(
11
)

Serving Harmony, MN and surrounding areas

Approved

In business since 1987

Free estimates

Credit card accepted

"My driveway was repaved about a month and a half ago. I was led to believe from the estimator, as well as the written estimate, that my entire driveway would be *milled*, or cut down (lowered) so that when the new asphalt was put down, my driveway would not be any higher (a concern for me, hoping not to add issues for me when mowing). Now my driveway IS higher and I have to mow so that I do not cross the driveway while mowing or else the mower deck will bottom-out. I have to wait to see about the quality of the asphalt; it seems like it is dried out and needs a sealer. There is also a bit of a hump where there had been a repair joint, so I am guessing it will not be long before I have a crack there."
14 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for ACT Landscaping LLC
ACT Landscaping LLC
3.8(
44
)

Serving Harmony, MN and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"The owner, Thomas Burke, was great to work with in all respects.   To start with he specified concrete that was stronger than what I wanted and this really pleased me.   It told me he was willing to go above and beyond my requirements or minimums.   He started with grading and removing dirt so he could build a retaining wall to hold back the grade for a new driveway.  The guy he sent out worked very hard and did a near perfect job on the new wall.   Like any construction project there were a few unknowns but he worked around these problems.   Then he poured the new garage addition slab and finished it for me.   Unfortunately it started to rain just before the final finish hardened so they had to redo some areas.  Didn't come out quite as good after the rain but very acceptable.   Then they immediately poured the driveway slab.   No new showers so this came out perfectly.  The concrete company sent out the second truck too soon so there was not enough time between pours to really get set.   I think this second pour therefore did not quite get the grade Tom wanted. The driveway slab was pitched to drain water to match an adjacent existing slab and this did not quite work out.   I have a small area on the new drive slab that holds water after a rain.  It was a tough job to slope it right and it is within a quarter inch of draining.   Like I said they were still grading the driveway when the truck showed up and I really think this cause the slight glitch.
I have some more work to do next summer and am really looking forward to having Tom back knowing I will get a good price, a good job, and quick service done right.  I would highly recommend ACT Contracting to anyone.
"
Walls,Pavers
Patio on the hill
Patio on the hill
Patio on the hill
Pools,Pavers,Patio

+45

Recommended by74%of homeowners
Avatar for Driftless Craft, LLC
Driftless Craft, LLC
5.0(
3
)

Serving Harmony, MN and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"A beautiful job done,professional attention to the details. I couldn't be happier with the finished project. James and Mike provided excellent service."
Response time3 days
Response rate86%
11 neighbors recently requested a quote
Graystone Concrete & Masonry, LLC
New to Angi

Serving Harmony, MN and surrounding areas

In business since 2009

Free estimates

GrayStone Concrete & Masonry, LLC, is your 1st and finest choice in concrete and masonry, all right here in our community. GrayStone Concrete and Masonry, LLC, produces elegant concrete and masonry work. Producing the ultimate in quality craftsmanship, with pride in doing great work, we care for your place and your project, as if it was our own. We are your one-stop shop serving the complete project, even aspects not noticeable -- we allow the whole to be completed right when it should be. Rest assured and everything is good with GrayStone Concrete & Masonry, LLC. We are perfectionists and all of our work is guaranteed. Call now.

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Concrete Driveways questions, answered by experts

It is generally not recommended to use dish soap in a pressure washer. Dishwashing liquid is formulated for cooler water, and the warmer water used in a pressure washer can create excessive suds, potentially damaging the machine's tubing and other components. Always check the manufacturer’s instructions for recommended detergents. If you find yourself in a pinch, you can try a highly diluted solution, such as one tablespoon of dish soap per 1.5 quarts of water, to avoid clogging the machine.

You should avoid using a pressure washer on any surface or item that could be damaged by the high-pressure spray, as some materials are too delicate to withstand the force.

Key items and surfaces to avoid include:

  • Electrical Components: Never pressure wash electrical systems, as water can cause short-circuits and create a safety hazard. This includes utility meters, breaker boxes, electrical outlets, generators, and HVAC or air conditioner units.

  • Delicate and Fragile Materials: Fragile items can crack, shatter, or be stripped by the pressure. Avoid pressure washing windows, glass, light fixtures, shingled roofs (especially asphalt), and stucco.

  • Painted, Stained, or Sealed Surfaces: Unless your goal is to strip the finish, do not pressure wash painted surfaces, stained wood (like decks), or anything with a protective seal that could be stripped away. Be especially cautious with older surfaces that may contain lead paint.

  • Soft Woods and Certain Decking: Delicate surfaces like softwood, composite decking, and antique or wooden patio furniture can be etched or damaged. If you must wash wood, use a lower-powered pressure washer with a wide-angle nozzle to prevent damage.

  • Living Things: Never use a pressure washer on people, pets, or plants. The force can cause serious injury and will destroy landscaping.

You should wait until your pavers have completely dried and cured before pressure washing them. Wait at least three to five days, though some sealants may need up to an entire week. Rushing that timeline can mess with the finish, weaken the seal, or leave streaks that are tough to fix. Once the sealant has fully set, stick to a gentle approach. Keep the pressure under 1,500 PSI and hold the nozzle at least two feet from the surface. Anything stronger or closer can blast the joint sand loose or wear down the sealant you just applied.

If your concrete stains are green in color, it indicates the presence of mold or algae—which you should address right away. If left unattended, mold will spread to other areas throughout the home. However, be careful not to disturb mold on indoor concrete surfaces and work with a local mold remediation specialist for specialized care. Once free from mold and algae, seal your concrete to eliminate pores and gaps.

Regular maintenance will help you avoid costly repairs and early replacement. Clean the driveway surface with a stiff brush and water at least twice yearly, and remove any weeds that try to take root. Additionally, every two to five years, apply a sealcoat—this protects the driveway against damaging UV rays and keeps it looking like new.

The Harmony, MN homeowners’ guide to concrete driveway services

From average costs to expert advice, get all the answers you need to get your job done.