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Foundation Parging in Baltimore, MD

Baltimore's concrete block foundations need regular parging to stay watertight. Cracked or peeling parge coat lets moisture into the block, into your basement, and into your home. MN Plastering has been parging Maryland foundations since 1987.

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The Service

What Is Foundation Parging?

Parging is a thin coat of mortar or cement-based mix applied to the exposed face of a foundation wall. It seals the porous surface of concrete block, fills voids and imperfections, and creates a uniform, weather-resistant finish.

In Baltimore, most rowhouses and post-war homes have concrete block foundations with original parge coats that are now 40–80 years old. When that parge cracks or spalls, water gets into the block — and eventually into the basement.

What We Do

✓ Parge coat repair — patch cracked, spalled, or delaminated parge coat
✓ Full re-parge — strip old parge and apply a fresh coat when repair isn't practical
✓ New construction parging — first coat on new concrete block foundations
✓ Crack repair — horizontal, vertical, and stair-step cracks filled and bridged
✓ Waterproofing coat — hydraulic cement or waterproofing additive mixed in for exposed areas
✓ Curb appeal restoration — a fresh parge coat dramatically improves the look of an exposed foundation

Signs Your Foundation Needs Parging

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Visible cracks in the parge coat, especially horizontal cracks which can indicate pressure from soil

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Spalling or flaking — parge coat coming off in chunks or layers

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White efflorescence — white mineral deposits indicating water moving through the block

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Damp basement walls — moisture on the interior face of the foundation

Free foundation assessment

We'll look at your foundation, tell you what it needs, and give you a written price — no pressure.

☎ (443) 806-8077

Why MN Plastering

Baltimore's Foundation Parging Contractor

37 Years of Foundation Work

We've parged hundreds of Baltimore foundations. We know the block types, failure modes, and right mix designs for Maryland's climate.

Proper Surface Prep

Parging fails when the substrate isn't prepared. We clean, dampen, and key surfaces properly before any mortar goes on. It's the difference between a repair that lasts and one that spalls off in two winters.

Licensed & Insured

MHIC #118059. A+ BBB. Fully insured for exterior foundation work. 77 five-star Google reviews.

Honest Assessment

We'll tell you if parging is sufficient or if you have a structural or drainage issue that needs to be addressed first. We don't sell you a parge coat when it's not the right fix.

FAQ

Foundation Parging Questions

What is foundation parging?

Parging is a thin coat of mortar or cement-based material applied to the exposed face of a foundation wall — usually concrete block, sometimes brick. It seals the porous surface, fills voids, and creates a smooth, weather-resistant finish. Most Baltimore rowhouses and older homes have parged foundations that need repair as the original coat ages.

Does parging waterproof a foundation?

Parging significantly reduces moisture infiltration on exposed above-grade foundation walls and is an effective first defense against water. For foundations with significant hydrostatic pressure, below-grade walls, or active water infiltration, additional waterproofing measures may be needed. We'll give you an honest assessment of what will actually solve your situation.

How long does parging last?

Properly applied parging on a stable foundation typically lasts 20–30 years in Maryland's climate. Failure comes faster when there's ongoing foundation movement, poor surface preparation, or an incorrect mix. We prep properly and mix for longevity — not for speed.

How much does foundation parging cost in Baltimore?

Parging cost depends on the square footage and condition of the foundation. Most residential parging runs $8–$15 per square foot, with minimums for small repairs. A full parge of a typical Baltimore rowhouse foundation is usually priced as a single job. We provide written estimates — call to schedule an assessment.

Should I repair or replace the parge coat?

If cracks are isolated and the rest of the parge coat is still bonded, repair is sufficient. If the parge is failing broadly — hollow-sounding throughout, spalling in large areas, or no longer bonded to the block — full replacement gives you a better starting point. We'll tell you which approach makes sense after we look at it.

When is the best time of year to parge a foundation in Maryland?

Spring and fall are ideal — moderate temperatures with good curing conditions. We avoid hot direct sun (which dries mortar too fast) and freezing temperatures (which prevent proper cure). We can work most of the Maryland spring, summer, and fall with appropriate precautions.