Groundwater finds its way into basements through failed or missing waterproofing on the outside of the foundation wall. Pittsburgh Concrete digs to the footing, installs a bonded membrane, adds drainage board and new weeping tile, then backfills with stone that channels water away from the slab. We handle new pours before backfill and retrofit existing foundations that are leaking. Every project includes a free written estimate and firm schedule.
The water is pressing on the outside of your foundation wall. Interior paint and sealers only hide the leak; the concrete behind them stays saturated, and freeze-thaw cycles keep cracking it wider. Real waterproofing means going to the source.
The system starts with excavation down to the footing. We clean the wall, apply a membrane that bonds permanently, cover it with drainage board, install new weeping tile bedded in stone, and backfill so water moves down to the tile instead of pooling against the slab. This is the same approach we use on every new foundation installation before backfill, and it is what stops leaks on retrofit work.
When a wall has structural cracks, we pair waterproofing with foundation crack repair to address both the water and the damage. The result is a basement that stays dry for decades. This is the standard we apply to every job.
Recent work
The sequence
How Foundation Waterproofing Gets Installed
Assess the leak source
We identify which walls are wet, check the grade and gutter system above, and determine if weeping tile is clogged, failed, or never installed. This tells us exactly what needs fixing.
Excavate to the footing
We dig down the full height of the wall sections that need work, expose the concrete, remove old coatings and any deteriorated waterproofing, and inspect the wall for cracks before proceeding.
Install the membrane system
A bonded waterproofing membrane goes on the cleaned wall from footing to grade, drainage board is applied over it, and the wall is allowed to cure before any backfill touches it.
Restore drainage and grade
New weeping tile is laid at the footing in clean stone, the trench is backfilled with drainage stone over the tile, the grade is restored, and gutters are extended away from the foundation.
Why interior fixes fail
Interior Sealers Don't Stop Groundwater Pressure
We regularly see basements that have had interior sealer applied once or twice. The paint peels, efflorescence returns, and the wall is still damp. The water is still on the outside, still pressing against the concrete, and the interior coating cannot stop it.
Combining exterior waterproofing with structural foundation repair where the wall has moved or cracked is the only permanent solution. This is what we install on every basement renovation we complete, and it is why homeowners stay dry through Pittsburgh's wet springs and heavy rains.
Interior vs exterior, weeping tile, retrofit work and what waterproofing actually keeps out.
Because the water is on the outside of the wall. Interior sealer paints over the symptom; the foundation behind it is still saturated and still freezing and thawing, which keeps working the wall apart. Exterior waterproofing stops the water from ever reaching the wall.
On almost every job, yes. If we are excavated down to the footing for waterproofing, replacing or installing weeping tile then is the right call. Bedding it in clean stone and tying it to the drainage system finishes the system.
Yes, if the leak is localised to one wall or one corner, we can excavate and waterproof that section only. We will be honest in the assessment about whether the rest of the wall is likely to fail next.
It seals over them from the outside, but a structural crack still needs crack repair on its own. The two services often go together, and we sequence them so the crack is properly addressed before the membrane covers it.
A properly installed exterior membrane with drainage board and new weeping tile is a decades-long fix. We use the same systems on new installations that are designed for the full life of the building.
Homeowner reviews
What Pittsburgh Homeowners Say About Their Waterproofing Jobs
Two interior sealer jobs failed before we called Pittsburgh Concrete. They went to the outside, did it right, and the basement has been dry through two springs since.
B. G.
Pittsburgh
★★★★★
Excavated one wall, replaced the weeping tile, put on a proper membrane, restored the landscaping cleanly. Wall is dry, yard looks like nothing happened.
J. P.
Aliquippa
★★★★★
Honest that the leak was just one corner and we did not need to do the whole foundation. Saved us a lot. Corner has stayed dry through the rain we had since.
E. L.
Monroeville
★★★★★
Big excavation, big mess on day one, but they put the yard back together by the end and the basement is bone dry. Worth doing once and properly.
O. N.
Mckeesport
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Tell us which basement walls are wet, when the leak started, and what has been tried before. We will assess the foundation free and provide a written quote for any waterproofing work.
