Lifetime transferable warranty
Protection that stays with the home, including when ownership changes. See the written warranty for covered work.
Signs & symptoms
Efflorescence in Basements and Water Stains on Basement Walls and Floors
Efflorescence in basements and water stains are two of the most common warning signs that something is going on behind your basement walls or beneath your slab.
You head down to the basement and spot it: a chalky white film creeping across the walls. Or maybe there’s a brownish stain spreading near the floor, dry to the touch but clearly out of place. At first glance, it might just look like leftover construction dust or the result of an old spill. But if those marks weren’t there before, or if they keep coming back, you’re likely seeing early signs of a moisture problem. And moisture is never just a cosmetic issue.
Efflorescence in basements and water stains are two of the most common warning signs that something is going on behind your basement walls or beneath your slab. They often show up before major leaks or visible wall damage, making them one of the few chances homeowners have to catch a foundation issue early.
Google reviews
What homeowners say.
4.9 / 5 from 286 Google reviews.
★★★★★ Google
After getting bids and talking with a few different contractors regarding what we needed for waterproofing our basement, I was feeling pretty overwhelmed, anxious and stressed out. Elliott...Read full review
After getting bids and talking with a few different contractors regarding what we needed for waterproofing our basement, I was feeling pretty overwhelmed, anxious and stressed out. Elliott was a breath of fresh air. He's a very nice, respectful guy. He is very knowledgeable and was easy to talk to. After speaking with him, I felt more at ease and less anxious about the whole process. Because of Elliott, we plan to move forward with Anchored Walls for our basement waterproofing.
ME
★★★★★ Google
Anchored Walls techs, Zach and Kyle, came ready to work!!! They added 9 anchors to 2 of my basement walls to stabilize them. Those 2 men worked hard! I have attached 2 pictures, the...Read full review
Anchored Walls techs, Zach and Kyle, came ready to work!!! They added 9 anchors to 2 of my basement walls to stabilize them. Those 2 men worked hard! I have attached 2 pictures, the first shows shovels over the holes so no one would fall in, and the finished yard. You cannot tell where the holes had been. Both men also added waterproofing to my basement floor. If Zach and Kyle are an example of what to expect when you hire Anchored Walls, then the company gets 5 stars from me. Great work Zach and Kyle !!! * * * * *
MH
★★★★★ Google
I bought an old townhouse and found leakage into the basement under a window well. I had Anchored Walls come out to inspect. Roger diagnosed the problem as 30-yr buildup of silt preventing...Read full review
I bought an old townhouse and found leakage into the basement under a window well. I had Anchored Walls come out to inspect. Roger diagnosed the problem as 30-yr buildup of silt preventing water from draining down to the tile. He recommended excavation and rebuild with clean pea gravel fill. A 2-man crew accomplished that in half a day. I withheld submitting a review for 2 months until I could see if it fixed the problem. Over the July 4th weekend we got 9 inches of rain. The basement was bone dry. So I was pleased and impressed. The guys from Anchored Walls are experienced and know what they are doing. FIVE STARS!
BD
★★★★★ Google
From the project manager through all the folks working this huge mess, I am so thankful for the job that was completed. Kyle and team put up with all my questions and dealt with temporary...Read full review
From the project manager through all the folks working this huge mess, I am so thankful for the job that was completed. Kyle and team put up with all my questions and dealt with temporary fencing for my dogs. Always rrspectful and polite. I can't rate them or Anchored Walls high enough! Also Deb in the office keeping me updated and answering more questions. Lucas and Carson putting in the sump pump. If you have basement issues, definitely call this company!!
KL
★★★★★ Google
Anchored Walls of Winterset stabilized our Basement walls, leveled our driveway, and found an incredible and invisible solution to our 25 year sump pump drain exit. Matt Clayton was...Read full review
Anchored Walls of Winterset stabilized our Basement walls, leveled our driveway, and found an incredible and invisible solution to our 25 year sump pump drain exit. Matt Clayton was consistently kind and patient. He nailed our estimate and was Readily available for questions before, during, and after the project. Debbie was quick, responsive, and friendly to give us speedy and accurate answers to many questions. Finally, Brad was the man who finally solved our 25 year sump pump problem. He was super respectful with my wife, and somehow installed 30 foot of PVC into our yard, leaving zero evidence. You're work is amazing and we are more thankful for you than we can express! All this to say, we strongly recommend and refer Anchored Walls of Winterset. Great job and God bless you for your Efforts.
DT
What is Efflorescence and Water Staining?
That white, powdery film on your concrete or block wall? It’s called efflorescence, and it’s more than just surface dust. Efflorescence forms when water seeps through your basement walls or slab, carrying along natural salts from the concrete or surrounding soil. As the moisture evaporates, those salts are left behind on the surface, creating a chalky residue that can build up over time.
Water stains often appear in tandem. These are the brown or yellow marks that show up along the base of the wall or across the basement floor. They’re caused by moisture intrusion as well, either from direct water entry or persistent humidity within the block wall system. In Iowa, where seasonal rain and snowmelt saturate the soil, hydrostatic pressure can push water into your foundation from all sides. When that pressure finds a path, even a small one, these marks are often the first visible clue.
What’s important to understand is that neither of these are isolated problems. Efflorescence and water stains aren’t the issue themselves; they’re the symptom of a deeper structural or drainage concern.
Efflorescence in Basements Might Point to Bigger Problems
Efflorescence and water stains might seem like small cosmetic issues, but they’re warning signs of a larger problem: your foundation is under pressure.
When water is pushing against your basement walls, especially in Iowa’s heavy clay soils, it doesn’t always burst through all at once. Instead, moisture slowly penetrates through porous concrete or cracks, building up behind walls or beneath floors. That seepage brings salts and discoloration with it, but more importantly, it creates conditions for long-term structural damage.
In many homes, efflorescence is the first visible clue that water is already moving through the wall. Left unchecked, this can lead to:
Even if your basement is dry today, the presence of water stains or white residue means the barrier between your home and outside moisture is already compromised. And it’s only a matter of time before the damage becomes more visible and more expensive to fix.
How Anchored Walls Fixes the Problem for Good
At Anchored Walls, we don’t just clean up surface stains and call it done. We identify the source of the moisture and stop it from getting in.
With over 40 years of experience serving Iowa homes, we understand how regional soil types, freeze-thaw cycles, and water tables affect your foundation. Our team inspects your entire structure to determine why water is pushing through, how it’s affecting the integrity of your walls or slab, and what it will take to correct it permanently.
Depending on your home’s needs, we may recommend:
- Interior drainage systems to redirect water before it reaches your living space
- Wall stabilization solutions if pressure is already causing walls to lean or crack
- Sealing and repair options that restore strength and protect against future moisture
We don’t believe in temporary patches. Every repair is designed to last and to give you peace of mind.
Experienced hands. A clear plan.
Helping Iowa homeowners since 1978.
A repair plan built around your home.
Start with a free inspection. We explain what we find and put the recommended work in writing, so you can make an informed decision.
★★★★★Google review
“Gabe & Taxson did a wonderful job of waterproofing our basement. They worked so hard chiseling concrete, carrying it up the stairs in buckets, then carrying rock and replacement cement down the stairs to fill in the dug up places, but most of all, they cleaned up the mess! Kip McMillen from United Services…”
Marjorie M.Verified Google review · Winterset, IA · Sep 2025
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A clear plan, respectful crews, and a commitment to the experience as well as the repair.
Frequently Asked Questions
How do I know if my crawl space needs repair?
Look for signs like sagging subflooring, musty smells, mold growth, high humidity, standing water, or visible rot on floor joists and beams. These often show up first in closets or laundry rooms above the crawl space. All of these issues point to possible structural or moisture problems below.
Why is there mold in my crawl space?
Mold is a result of excessive moisture in the crawl space of your home. It’s very important that you take care of a moldy crawl space problem as soon as you notice that something is wrong. If left untreated, mold can cause a number of problems for the structural integrity of your home, as well as your family’s health. If you don’t repair your foundation, water will eventually seep in. This causes an assortment of additional problems for the structural integrity of your home.
What causes crawl space moisture?
Crawl space moisture comes from water seepage, improper yard drainage systems, soil settlement and condensation. Regardless of whether your crawl space is dirt, concrete, vented or unconditioned, these lower areas underneath the home tend to endure the most damage due to the many changes in weather conditions, high temperatures and humidity levels. Humidity and moisture easily travel through your crawl space and can begin to infiltrate the structure of your home.Damp or wet crawl spaces are perfect homes for insects, rodents and other critters. This area underneath your home can be extremely unhealthy, destructive and dangerous. Your wet crawl space can also act as a breeding ground for mold and mildew growth. Mold spreads easily throughout your home when it begins in your crawl space. Mold, as well as wood rot, can negatively affect your home’s indoor air quality. That’s why it’s important to take care of crawl space moisture problems as soon as you notice them.
Are foundation cracks serious or just cosmetic?
Some small, vertical cracks may be normal settling, but if a crack is widening, leaking water, or forming a stair-step or horizontal pattern, it could signal a structural issue. It’s always best to have cracks professionally evaluated to determine whether repair is needed.
If I don't repair my foundation, what could happen?
If you don’t repair your foundation, water will eventually seep in. This causes an assortment of additional problems for the structural integrity of your home.
Explore basement waterproofing
Leaking Crack Repair
At Anchored Walls, we’ve been helping homeowners in Winterset and the surrounding areas protect their homes from basement water for over 40 years.
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Interior Drain Tile System
At Anchored Walls, we install interior drain tile systems designed to manage groundwater before it ever reaches your basement floor.
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Sump Pump Installation & Replacement in Iowa
Anchored Walls has been in the business of repairing and protecting foundations, basements, crawl spaces, concrete slabs, and sump pump installation services in the Des Moines area for over 40 years.
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Rust Stains on Basement Walls and Floors
Rust stains on basement walls or floor might seem harmless at first, just a few orange streaks near a drain or a faint outline around a metal post.
ExploreA local team for your Iowa home.
From our Winterset location, we serve Des Moines, Ankeny, Waukee, Johnston, Urbandale, Clive, Ames, and surrounding communities. Check your ZIP for service at your address.
Highlighted counties contain service ZIP codes. Coverage varies within each county; check your ZIP and confirm your address when scheduling.