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Basement Waterproofing in Lancaster, PA

Lancaster rowhomes share walls, and they share water too

Our office is on Harrisburg Pike, about ten minutes from the city center. Lancaster rowhome basements are the job we run most often, and the shared wall is usually where it starts.

(800) 834-6584
  • 4.9 · 195 Lancaster reviews
  • Lifetime warranty
  • No money down
  • 24/7 emergency
Interior waterproofing at the footing, in cross-sectionCutaway through soil, a concrete block foundation wall, and the basement floor and framing beside it. Water seeps down through the soil on the left and gold arrows show it pressing against the wall. A green wall vapor barrier runs down the inside face of the block and turns into a sealed cove joint where the floor meets the wall, with a gold wedge marking the joint water would otherwise enter through. Below the floor slab, a green perforated drain pipe sits in a gravel bed at the footing and runs right into a sealed green-lidded sump basin, whose discharge line rises and carries water off to the right, away from the house.GradeWall vapor barrier over blockCove joint, sealedPerforated drain in a gravel bed at the footingDischarge, routed away from the house
Basement Waterproofing in ZIP 17601, 17602, 17603 · City of Lancaster · Lancaster County, PAOffice: 2348 Harrisburg Pike, Lancaster, PA 17601 · Mon–Sat 7AM–8PM

Waterproofing in Lancaster

Limestone valley floor

A brick rowhome in the city center does not fail on its own. It fails with its neighbors. The foundations along a block of North Duke or South Prince were laid as one continuous run of stone and early block, the party walls are shared, and the downspouts on three houses often drop into the same tired clay lateral. When that lateral gives up, water backs into the ground behind all of them and comes through the lowest cellar on the row.

Underneath the city is Conestoga Valley limestone, and limestone moves water along its joints. Rain finds those joints and solution channels in the rock and reaches a footing under real pressure while the storm is still going. That is why a Lancaster cellar can be bone dry through a wet April and take water in one hard July hour, and why the white mineral crust on the block shows up months before anyone sees standing water.

On a city job we start outside, because the cheapest gallon to handle is the one that never reaches the wall. Downspouts get extended or reconnected properly, the grade at the sidewalk gets looked at, and then the interior drain goes in at the footing with a sealed basin and a battery backup. In a rowhome that means working clean in a tight space with the dust contained, which is most of what our crews do all week.

What we install in Lancaster

Interior French drain tied into a sealed sump basin with a battery backup, because the volume shows up fast and all at once. Wall vapor barrier where the block has been wicking.

Most common call here

  • Water appears within an hour of a hard rain, then leaves just as fast
  • White mineral crust (efflorescence) on block walls
  • A single wet corner rather than an evenly damp floor
  • Depressions or soft spots in the yard near the foundation
Everything we do in Lancaster →

The actual scope

What a Lancaster job includes

Every basement waterproofing we install in Lancaster, PA follows the same checklist, and you get it in writing before the crew arrives. A dry basement is a drainage problem, not a paint problem. We relieve the water pressure under and beside your foundation and give the water somewhere to go, so the room stays dry through the wettest spring Lancaster County can produce.

  • Interior French drain at the footing
  • Sealed sump basin with battery backup
  • Wall vapor barrier over block
  • Cove-joint and crack sealing
  • Discharge routed away from the house

More of what we do in Lancaster

One crew, one warranty, all of it out of the Lancaster office.

How a Lancaster waterproofing job runs

Start to warranty

  1. Free inspection and water-path diagnosis

  2. Written scope and fixed price

  3. Install in 1–3 days, most jobs

  4. Lifetime warranty and a wet-season check-in

Dylan and crew were absolutely as professional as I could ask. From the consultation estimate to the completed basement was very quick. They were on time every day complete with a call before they would arrive.
Rob D., Lancaster

Questions from around Lancaster

Straight answers

My neighbor's downspout dumps right against our shared wall. Is that my problem or theirs?

Practically, it becomes yours the moment the water gets into the ground behind both foundations, because it comes through whichever cellar sits lowest. Most Lancaster rowhome blocks we work on have at least one downspout going into a clay lateral that quit years ago. We can usually fix your side without anybody knocking on a door, and we'll show you photos of where it's actually getting in.

Water only shows up in the back corner of my cellar. Why just there?

One wet corner is the classic limestone signature. The water isn't spread evenly through soil, it's running along a joint in the rock and arriving at one spot under pressure. That's good news for diagnosis and it does not mean a corner-sized repair will hold, because the next storm can pick a different joint.

Can you even get equipment into a city rowhome basement?

Yes, and we do it most weeks. Lancaster city basements are tight, low and reached by a narrow set of stairs, so our crews break the work down to what fits and run dust containment the whole time. Nothing goes through your living room that isn't covered first.

There's white powder all over my block walls but the floor has never been wet. Do I still need something?

That crust is efflorescence, mineral left behind by water that moved through the block and evaporated on the inside face. So water is already coming through the wall, it's just leaving as vapor at the moment. It's worth a free look now while the fix is drainage and sealing.

How much mess is this going to make in a house I'm living in?

There's a day of noise when the slab gets cut and a day of hauling. Crews contain the dust, sweep at the end of every day, and most Lancaster interior systems are done inside three days. You stay in the house the whole time.

Basement Waterproofing near Lancaster

Same crew, same routes, same week.

Basement Waterproofing across Lancaster County →

Get a real price on basement waterproofing in Lancaster.

Free estimate, no money down, and a lifetime warranty that transfers when you sell the house.

(800) 834-6584