Warm brown stamped concrete patio with a sealed finish
Concrete Services

Concrete Sealing and Resealing in the Southwest Twin Cities

Stamped patios, driveways, walks and steps. Cleaning, patching where it is worth patching, and a fresh coat of sealer, so an older slab goes back to looking like the one you paid for.

Sealer is the part of a concrete job people forget is maintenance. It goes on once when the slab is new, it does its work quietly for a few years, and then it wears off somewhere between the third summer and the sixth without ever announcing it. The slab does not fail that day. It just starts drinking water it used to shed, the color goes flat, and the surface picks up every stain that lands on it.

Minnesota Valley Concrete reseals the work we poured and the work somebody else poured. Stamped patios, concrete driveways, sidewalks, steps and garage aprons. It is a smaller job than a pour and it is one of the few things you can do to an aging slab that makes a real difference for what it costs.

The honest version of what resealing does: it protects and it restores appearance. A resealed stamped patio gets its color depth back and stops looking chalky, and water beads on it again instead of soaking in. What it does not do is fix a slab that has failed underneath. Sealer is a coating. It is not a repair, and putting it over a problem hides the problem for a season.

So the first thing we do is look at the slab and tell you which of those two situations you are in. Some jobs are a clean and a coat. Some need patching first. A few should not be sealed at all, and we will say so rather than take the work.

Call 612-221-2181 and describe what you have and roughly how old it is. If it is stamped, mention whether it has ever been resealed since it went in, because that answer changes the job more than the square footage does.

Why sealer matters more here than it does in most places

Water is the whole argument, and Minnesota runs it through the worst possible cycle. Concrete looks solid but it holds water in tiny pores. When that water freezes it expands, and a surface that has been soaking up water all fall goes into winter loaded. Repeated enough times, the top layer starts coming off in flakes, which is called scaling, and scaling does not grow back. A sealer's job is to slow how much water gets in before the freeze, and it is the cheapest intervention available.

Salt makes it faster. Chlorides drive into the top layer of concrete and attack it directly, which is why de-icing salt is the single worst thing you can put on a slab and why we tell people to keep it off new concrete entirely. On older concrete a sound sealer is what stands between the salt and the surface. A driveway that gets salted every winter and has not been sealed in six years is the most common scaling call we get.

On stamped work there is a second reason, and it is the one people actually notice. The color in our stamped concrete is premixed solid through the slab rather than coated on top, so it does not wear off, but it does go flat and chalky as the sealer above it degrades. Resealing brings the depth back. The difference between a tired stamped patio and one that looks close to new is usually a cleaning and a coat, not a repour.

The last one is simply that sealer is a wear item on a schedule nobody hands you. There is no light that comes on. The tell is visual: water stops beading and soaks in as a dark patch, the color looks washed out, and the surface feels rougher underfoot than it used to. If you are seeing those, the sealer is already gone rather than going.

What a reseal from us includes

  • A look at the slab first, and a straight answer on whether sealing is the right spend
  • Thorough cleaning, because a sealer is only as good as what is under it
  • Patching and crack filling where it is worth doing, skipped where it would only hide a problem
  • A sealer suited to the surface, stamped and broom finished are not the same specification
  • Non slip additive on stamped work, so a wet patio is not slick underfoot
  • Application in conditions the sealer can actually cure in, which rules out some days entirely
  • A straight reseal interval for your slab, based on sun, shade and how hard it gets used

What we reseal

Stamped patios and sitting areas

The most common call and the one where the difference shows most. Color depth comes back, the pattern reads properly again, and the non slip additive goes back in with the sealer rather than being an afterthought.

Concrete driveways, walks and steps

Broom finished flatwork that has been taking salt and traffic for years. This is protection work more than appearance work, and on a driveway approaching the age where scaling starts it is the cheapest thing you can do for it.

Older slabs we did not pour

We reseal other contractors' work. We will look at it the same way we look at ours, which includes telling you if the slab is past the point where sealing helps.

Our process

How a reseal runs

1

Look at it before quoting

We come out, look at the surface, and find out whether it has ever been sealed and roughly when. Old sealer that is failing in patches is a different job than bare concrete, and a slab that is scaling or lifting is a third thing entirely. The answer decides whether this is a cleaning and a coat or a conversation about something bigger.

2

Clean it properly

The slab gets cleaned before anything goes on it. Sealing over dirt, organic growth, or a failing previous coat traps all of it under the new sealer and the result peels. This is the step that decides whether the job lasts, and it is the step most cheap reseals skip.

3

Patch what is worth patching

Cracks and small surface defects get addressed where patching genuinely helps. We are straight about the limits here: a patch is visible, it does not restore a stamped pattern perfectly, and on a slab that is moving it will reopen. You will hear that before we do it, not after.

4

Seal in conditions it can cure in

Sealer needs the right temperature and a dry slab, and it needs the weather to hold long enough to cure. That rules out some days and it is the reason a reseal gets scheduled around the forecast rather than the calendar. Rushing this is how a coat goes cloudy.

5

Walk it and set the interval

We go over the finished surface with you, cover what to keep off it and for how long, and give you an honest reseal interval for that specific slab rather than a number off a can.

What resealing fixes, and what it does not

It fixes appearance on a sound slab. Flat, chalky, washed out stamped concrete comes back. A driveway that looks permanently dirty usually looks considerably better once it is properly cleaned, before the sealer even goes on. Water beads again. That is a real result and it is most of why people call.

It does not fix scaling that has already happened. Once the top layer has flaked off, the surface underneath is exposed and rougher, and sealing it protects what is left but does not put the surface back. Sealing badly scaled concrete is putting a coat on a problem, and we would rather tell you the slab is nearer the end of its life than take money for a coat that changes nothing.

It does not fix a slab that is cracked from below. If a slab has heaved, settled unevenly, or cracked across the field because the base under it failed, sealer is irrelevant to that. The honest options there are living with it or tear out and replacement, and which one makes sense depends on how bad it is and how visible it is. We will look and tell you.

It does not turn one color into another. Our stamped work is premixed solid color through the slab, so a reseal deepens and revives what is already there. It is not a recolor, it is not a stain, and nobody should promise you a different patio at the end of it.

How often, and what to keep off it

There is no single interval, and any number quoted without seeing the slab is a guess. What actually decides it is exposure and use. A patio in full afternoon sun and a patio under a deck in the shade do not wear at the same rate, and a driveway that gets plowed, salted and parked on every winter is on a different schedule than a back sidewalk nobody walks on. We give you an interval for your slab after looking at it, and it usually lands somewhere in the low single digit years on hard working surfaces.

Between coats, the maintenance is not complicated. Sweep it, rinse it, get leaves off it in the fall before they sit and stain, and move planters and furniture feet around now and then rather than leaving them in one spot for years. That is most of it.

The two things worth being firm about are salt and steel. Keep de-icing salt off stamped concrete entirely and off any newer slab, because chlorides take the surface off in flakes and no sealer makes that safe. Sand gives you traction and does not attack the slab. And a plastic or rubber edged shovel keeps the texture on a stamped pattern intact where a metal blade takes the high spots off it a little at a time. Both of those do more for how long a slab lasts than the sealer does.

Where we do this work

We reseal across the southwest Twin Cities metro, out of Carver, the same area we pour in. Thirty towns have their own page on this site and those are the ones we are in most often, but resealing travels easily because there is no ready mix truck involved.

The work is seasonal for the same reason the pours are. Sealer needs temperature and a dry slab to cure properly, so it runs inside the same March to mid-October window and it is weather dependent inside that window in a way pouring is not.

If you have an older stamped patio or a driveway that has never been resealed, the useful thing is to have somebody look at it rather than guess from the sidewalk. Call 612-221-2181 with the address and roughly how old the concrete is, and you will get a straight answer about whether sealing it is worth the money or whether the slab needs something else.

Where we do it

Concrete Resealing near you

Questions

Concrete Resealing FAQs

How often does concrete need to be resealed?

There is no single number and anyone who gives you one without seeing the slab is guessing. Exposure and use decide it. A patio in full sun, a driveway that gets salted and plowed, and a shaded back walk all wear at different rates. We look at the surface and give you an interval for that specific slab.

How do I know the sealer is gone?

Water is the easiest test. On a sealed slab it beads and sits on the surface. On an unsealed one it soaks straight in and leaves a dark patch. Alongside that, stamped color looks flat and chalky rather than deep, and the surface feels rougher underfoot than you remember.

Can you reseal concrete somebody else poured?

Yes, and a good share of this work is exactly that. We look at it the same way we look at our own, which includes telling you honestly if the slab is far enough gone that sealing it is not worth the spend.

Will resealing fix my flaking concrete?

No, and this is the most important thing on the page. Flaking is scaling, the top layer coming off after water and salt have worked on it, and it does not grow back. Sealing protects what is left and stops it getting worse faster, but the surface that is gone stays gone. We will tell you where your slab sits rather than sell you a coat that changes nothing.

Is sealed stamped concrete slippery?

It can be if it is sealed and nothing else is done about it, which is why we put a non slip additive in the sealer on stamped work as a default rather than an upgrade. Texture in the pattern helps too, and that combination holds up fine wet.

Do you patch cracks as part of it?

Where patching genuinely helps, yes. We are straight about the limits: a patch is visible, it will not restore a stamped pattern perfectly, and on a slab that is still moving it will reopen. You hear that before the work, not after.

What does resealing cost?

Quoted per job. Square footage is the starting point, then how much cleaning the surface needs, whether a failing previous coat has to come off, whether any patching is involved, and which sealer the surface calls for. We price it after seeing it.

When can I use it again after sealing?

It depends on the sealer and on the weather that day, so we give you the real timing for your job when we do it rather than a number off this page. Foot traffic comes back before vehicle traffic does, and furniture waits longer than feet do.

Ready to get it poured right?

Tell us what you are planning, a patio, a driveway, a foundation or a pour you cannot reach. We will look at the site, explain what it actually needs, and give you a free written estimate.