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Denver Borough / East Cocalico Twp · 17517

Basement Waterproofing in Denver, PA

East Cocalico is heavy red shale. Water stays in that clay for days, which is why Denver basements seep long after the rain has stopped.

Our Lancaster office on Harrisburg Pike covers Denver every week, and the estimator who quotes your job is the one who knows this ground.

(800) 834-6584
  • 4.9 · 195 Lancaster reviews
  • Lifetime warranty
  • No money down
  • 24/7 emergency
Denver, PA — Northern red shale and clayLocator card for Denver, Denver Borough / East Cocalico Twp, ZIP 17517, in Lancaster County, PA. The town name is set across the top of a dark banner. Below it, a cross-section of the ground this town is built on — the Northern red shale and clay — shows 5 layered beds of red shale and clay tilting down to the right, with water held in dashes along the bedding planes long after the rain has stopped.LANCASTER COUNTY, PANORTHERN RED SHALE AND CLAYDenverZIP 17517 · Denver Borough / East Cocalico Twp
Serving ZIP 17517 · Denver Borough / East Cocalico Twp · Lancaster County, PAOffice: 2348 Harrisburg Pike, Lancaster, PA 17601 · Mon–Sat 7AM–8PM

The ground under Denver

Northern red shale and clay

Gettysburg red shale and the heavy clays of the Furnace Hills and Cocalico basin.

Red shale clay holds water the way a sponge holds water. After a wet week the soil against your wall stays saturated and pushes — hydrostatic pressure on the block, lateral pressure on the wall, and slow seepage through the cove joint where the floor meets the wall. Freeze-thaw cycles in that clay are what bow walls in this end of the county.

What we install in Denver

Interior drain at the footing to relieve the pressure, plus wall reinforcement (carbon fiber or steel) anywhere the block has started to move. Exterior grading and downspout extensions to stop feeding the clay.

Most common call here

  • Seepage along the floor-wall joint after several days of rain
  • Horizontal crack across the middle of a block wall
  • Doors upstairs that stick in spring and swing free in August
  • Damp, earthy smell that never fully clears

Twelve things worth a phone call

Warning signs in Denver homes

Any one of these is worth a free look. Three or more usually means water has been working on the structure for a while.

  1. Seepage along the floor-wall joint after several days of rain
  2. Horizontal crack across the middle of a block wall
  3. Doors upstairs that stick in spring and swing free in August
  4. Damp, earthy smell that never fully clears
  5. Water on the floor after a storm
  6. A damp, earthy smell you cannot place
  7. White chalky residue on block walls
  8. Peeling paint or rust at the base of the wall
  9. Cracks in a wall, floor or ceiling
  10. A wall that looks bowed, leaning or shifted
  11. Doors or windows that stick in one season
  12. Standing water or damp insulation in a crawl space

Everything we do in Denver

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

How a Denver job runs

Four steps, one to three days

  1. Free inspection

    We read the water path inside and out, photograph what we find, and hand you the photos.

  2. Written scope and fixed price

    One page, plain language, no expiring discount and no pressure to finance.

  3. Install

    Most interior systems are one to three days. We contain the dust and clean up daily.

  4. Warranty and check-in

    Lifetime warranty on the system, and we come back after the first wet season if you want us to.

Questions from around Denver

Straight answers

Do you actually work in Denver?

Yes — regularly. Our office is at 2348 Harrisburg Pike in Lancaster, and Denver (Denver Borough / East Cocalico Twp) is a routine stop for our crews. Ask for the Denver photos when the estimator comes out.

What does a job in Denver usually cost?

It depends on how much wall needs draining and what the ground is doing. The estimate is free and in writing before anything starts, there is no money down, and financing is available.

Why does my neighbor need a different system?

Red shale clay holds water the way a sponge holds water. Two houses on the same street can sit on different grades and take water differently, which is why we read the water path before quoting.

How fast can you get here?

Free estimates in Denver are usually within a few days, and we run 24/7 emergency service when there is active water in the house.

Is the warranty transferable if I sell?

Yes. The waterproofing warranty is for the life of the home and transfers to the next owner, which is worth having in hand at closing.

Also working near Denver

Same crew, same routes, same week.

All Lancaster County towns →

Dry basement in Denver. Let’s start.

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

(800) 834-6584