Licensed, Bonded & Insured in Wisconsin Serving Waukesha County & Greater Milwaukee
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Exterior Waterproofing in New Berlin, WI

A leaking New Berlin basement stopped at the source - we dig to the footing and seal your wall from the outside so water never reaches the inside. Free inspection, lifetime transferable warranty.

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Local & Family-Owned

Exterior waterproofing New Berlin homeowners actually trust

When a basement wall keeps leaking, the water is coming in from the outside, so that is where the real fix belongs. Exterior waterproofing seals the wall on its outer face and drains the water away at the footing, which stops it before it ever reaches your New Berlin basement. It is the most thorough way to keep a basement dry, and it is the right call for a leak that keeps coming back or a finished space you want to protect.

New Berlin sits up on higher glacial-moraine ground, and under a lot of the city the soil is heavy clay. That clay holds water. Every spring the snowmelt and rain soak it, the clay swells, and the saturated soil pushes straight against your foundation. Many of the 1960s and 70s ranch homes here have block basement walls, and those tend to leak at the cove joint where the wall meets the footing and through cracks in the block. Interior patches cover the inside, but the block stays wet and the water finds another path.

We are based at 2128 Easy St in Waukesha, a short drive from New Berlin, and Nick, Luis, and our own crew have been sealing these walls since 1998. New Berlin has an active home-buying market, so a wet basement often shows up right at inspection. One buyer here closed on a house with water damage in the basement, and we solved it with exterior sealing plus drainage. It stayed bone-dry through the next spring thaw, and the lifetime transferable warranty went with it.

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Exterior waterproofing methods for New Berlin, WI homes - Basement Foundation Repair
How We Waterproof It in New Berlin

Proven exterior waterproofing built for New Berlin

Excavation down to the footing

We dig carefully along the leaking wall to expose it top to bottom, all the way to the footing, so the full face can be sealed. In New Berlin clay this is slow, deliberate work.

Liquid waterproof membrane

After cleaning the wall and patching cracks with hydraulic cement, we coat the whole surface with a thick elastomeric membrane that seals out the water for good.

Dimple board + weeping tile drainage

A dimpled drainage board gives water an air gap to fall down, and perforated weeping tile at the footing collects it and carries it away from your home.

Washed gravel backfill & regrading

Clean washed gravel wraps the weeping tile for fast drainage, then we backfill the soil and re-grade so the surface slopes water away from the foundation.

Warning Signs

Signs you need exterior waterproofing in New Berlin

  • Water seeping into the basement after heavy rain or the spring thaw
  • White chalky efflorescence on the block where water pushes through
  • A musty, damp smell that never quite leaves the basement
  • Paint peeling or bubbling off a foundation wall
  • Water pooling against the foundation outside after a storm
  • A recurring leak that interior patches in New Berlin clay never solved
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Why New Berlin Chooses Us

Exterior waterproofing built for New Berlin homes

  • Our own crew does the digging. Every step, from the first shovel to the final grade, is handled by our trained, background-checked team out of our shop on Easy St in Waukesha.
  • We know the New Berlin moraine and its clay. The higher ground and heavy clay here swell and hold water in spring, and we build the drainage to match what your yard actually does.
  • Lifetime transferable warranty. If water ever comes back through that wall, we return at no cost, and the warranty carries to the next owner when you sell.
  • Honest, written quotes. Free inspection, a clear price on paper, and New Berlin neighbors who send us their friends for exactly that reason.
Lifetime

Backed by a lifetime transferable warranty

We don't just waterproof your New Berlin basement, we stand behind it. If water ever finds its way back through that wall, we come back and make it right at no cost, and the warranty transfers to the next owner.

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Real Results

What your New Berlin neighbors say

★★★★★

They replaced our drain tile, put in a sump pump, set steel beams, and sealed the basement walls - then redid the window wells and buried a downspout outside. The price was competitive and Nick, Luis and the crew explained everything as they went.

Barb Ahrens
Barb Ahrens
Verified Google review
★★★★★

What an amazing job. There aren't enough words to say how much we appreciate Nick, Luis and the crew. The work was beautiful and they left the job site perfect. Thank you so much!

Ken Noffke
Ken Noffke
Verified Google review
Find Us in New Berlin

Your local exterior waterproofing team

Basement Foundation Repair, LLC

2128 Easy St
Waukesha, WI 53188

We work out of our shop in nearby Waukesha, so your New Berlin dig is handled by a local crew that serves this city and the neighborhoods around it every week.

Phone: +1 (414) 587-3093

Hours: Mon–Fri 7am–7pm · Sat 8am–4pm

Call +1 (414) 587-3093
More In New Berlin

Other basement services we offer in New Berlin

See everything we do in New Berlin
Nearby

Exterior waterproofing near New Berlin

We waterproof basements across Waukesha County and Greater Milwaukee. If you're just outside the city, we serve your community too:

Brookfield, WIMuskego, WIWaukesha, WIGreenfield, WIAll 14 areas
Questions, Answered

New Berlin exterior waterproofing FAQs

It often is. When water shows up at inspection, it is usually getting in from the outside through the block or the cove joint. Exterior waterproofing seals the wall face and drains the water at the footing, so the basement stays dry. We come look before you close and give you an honest written quote you can use in your budget.
Usually yes. Interior sealers cover the inside of the block, but the block still soaks up water from the wet clay outside and finds a new way through. Exterior waterproofing seals the outer face and carries the water away at the footing, which is why it holds when inside fixes keep letting go.
That is the whole point. New Berlin clay swells and holds snowmelt every spring, and that pressure pushes against the wall. Sealing the outside and adding weeping tile at the footing drains that water away before it can get in. One homeowner here stayed bone-dry the first spring after we sealed the outside.
We only dig along the wall that leaks and leave the rest of your yard alone. We protect the area while we work, then backfill with washed gravel and soil and re-grade so water slopes away from the house. Grass and plantings can be replaced, and our own crew handles the digging so the site stays under control.
Both keep a basement dry, and the right one depends on your home. Exterior waterproofing stops water at the wall and is the most thorough fix, which is worth it for a finished basement or a leak that keeps coming back. Interior drain tile is easier on the yard and the budget. We give you an honest recommendation at the free inspection.
Most jobs run a few days, depending on how much wall we open up and how easy the yard is to reach with equipment. The heavy clay under many New Berlin ranches is slower to dig than sandy soil, and we build that into the timeline you get in writing before we start.
It depends on how long the wall is, how deep the footing sits, and how easy it is to get equipment to the dig. Because it involves excavation it costs more than an interior system, and you get an honest written quote after a free in-home inspection, with no guessing over the phone.
Free, No-Pressure Inspection

Wet wall in your New Berlin basement?

Don't wait for the next big rain or spring thaw. Talk to a real member of our family team today - we'll inspect your New Berlin basement, find where the water is getting in, and give you an honest, written quote at no cost.

Call +1 (414) 587-3093

Same-week appointments  ·  Financing available  ·  Lifetime transferable warranty

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