Masonry restoration in Old City Philadelphia is the careful repair and preservation of some of the oldest brick and stone buildings in the United States. It typically combines matched-mortar repointing, brick and stone replacement, lintel and cornice repair, and breathable water protection, all done in a way that preserves original 18th- and 19th-century fabric. On blocks this historic, restoration is as much about what you don’t disturb as what you repair. The goal is a sound, watertight building that still reads as authentically old.

Why Old City masonry is unlike anywhere else

Old City holds Philadelphia’s earliest surviving architecture, much of it Federal and Georgian brick laid in soft lime mortar, often with handmade brick and stone foundations. These walls have stood for two and three centuries by being allowed to breathe and flex. Modern, rigid repair methods, hard cement mortar, film-forming sealers, mismatched brick, work against that and can cause more damage in a decade than the building suffered in a century. Restoration here requires patience, the right materials, and a light hand.

What we typically find on Old City buildings

• Centuries of mortar erosion and washed-out joints
• Spalled, cracked, and previously over-repaired brick
• Soft stone foundations and water tables in need of repointing
• Rusting iron lintels and anchors expanding within the wall
• Failing cornices, parapets, and chimneys at the roofline
• Trapped moisture from past non-breathable coatings

Our restoration approach

1. Survey the whole building. We assess masonry from the foundation to the parapet, identifying what’s structural, what’s cosmetic, and what’s salvageable.
2. Match before we touch. We analyze the original mortar and source matching brick and stone before any removal, so repairs are faithful.
3. Repoint by hand. Failed joints are carefully raked and repointed with a soft, lime-rich mortar tooled to the original profile. See our repointing work.
4. Repair brick and stone. Spalled units are replaced with matched materials through our brickwork, preserving the original coursing and bond.
5. Stabilize the roofline. Cornices, parapets, and chimneys are repaired so water stops at the top of the wall. Our chimney services handle masonry chimneys and crowns.

Preserving the oldest block, the right way

The mortar decision drives everything. Soft historic masonry must be repointed with mortar softer than the brick and stone, so the joint wears instead of the irreplaceable units. We test, match, and tool every joint to suit the building’s age. We work throughout the district, and if you’re focused on your specific property, see our page on brickwork in Old City and our completed work in the gallery. You can also learn about our family’s three generations of craft on our about page.

What restoration costs

Old City restoration ranges widely. Cost depends on the size and height of the building, access and scaffolding, how much repointing and unit replacement is needed, the condition of the roofline and foundation, and the level of preservation required. Targeted repairs are modest; a full building restoration is a significant, multi-stage investment that protects an irreplaceable structure. We never quote sight-unseen. Every job starts with a free on-site estimate.

The case for breathable, reversible repairs

The guiding principle in serious masonry restoration is to do as little harm as possible and to favor repairs that can be undone or maintained later without destroying original material. On Old City buildings that means:

• Soft, breathable mortar that wears instead of the brick and lets the wall dry out
• Matched replacement units sourced to suit the original brick and stone, not whatever is cheapest
• Gentle cleaning at low pressure rather than aggressive blasting that destroys the fired surface of historic brick
• No film-forming coatings that trap moisture and accelerate decay

These choices cost a little more in labor and materials, but they’re what keep a 250-year-old building standing for another century. Shortcuts on a historic facade aren’t savings, they’re deferred damage.

Coordinating restoration on a historic property

Restoring an Old City building often involves more than masonry, scaffolding, sidewalk protection, permits, and sometimes coordination with preservation guidelines. We handle the masonry as licensed, insured craftsmen and work cleanly around occupied homes and businesses on these narrow historic streets. The result is a building that’s sound, watertight, and still authentically itself.

Frequently Asked Questions

What does masonry restoration in Old City involve?

It usually combines matched-mortar repointing, brick and stone replacement, lintel and cornice repair, and breathable water protection, all done to preserve original 18th- and 19th-century fabric while making the building sound and watertight.

Will restoration change how my historic building looks?

Done correctly, no. We match mortar color and joint profile and source replacement brick and stone that blend with the original, so the building keeps its authentic appearance while becoming structurally sound.

Why are modern repair methods a problem on very old buildings?

Hard cement mortar and film-forming sealers trap moisture and force stress into soft historic masonry, causing spalling. Old City walls were built to breathe and flex, so they need soft, breathable, matched materials.

Do you handle the whole building or just the facade?

We can address the entire masonry envelope, from the foundation and water table up through the brick, lintels, cornices, parapets, and chimneys. We survey the whole building and recommend what’s needed during a free estimate.