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Center City Philadelphia street of brick rowhomes and trinities with the skyline behind

Center City · 19106

Mold Remediation
Old City

Inspection, containment, removal and moisture correction to the IICRC S520 standard for Old City homes, rentals and businesses, documented from the first visit for your adjuster, landlord or buyer.

  • Typically within 30 minutes
  • IICRC S520 remediation standard
  • Written scope before work starts

Get help in Old City

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How urgent?

Written scope and price before work starts. Independent clearance testing available. No obligation. Privacy.

  • ~30 min

    Typical arrival in Old City

  • 24/7

    Emergency response for active water

  • S520

    IICRC mold remediation standard followed

  • 1700s-1900s

    Colonial and Federal rowhomes, converted warehouses and condo lofts

Mold in Old City

Where the moisture comes from in Old City.

Old City holds some of the oldest houses in the city alongside 1800s and early 1900s warehouses and factories that have been converted into condos, lofts and apartments. It sits on low ground near the Delaware River on the combined sewer, and most jobs are multi-unit with a condo association involved.

Center City Philadelphia street of brick rowhomes and trinities with the skyline behind

Crews on the ground locally

Regular work around Independence Hall, Elfreth's Alley, Christ Church and Penn's Landing, and the blocks between.

Housing era
1700s-1900s
Typical homes
Colonial and Federal rowhomes, converted warehouses and condo lofts

Notes from our Old City crew

Old City is two kinds of building. The first is the Colonial and Federal era brick rowhome, some going back to the 1700s, with a brick foundation, a shallow cellar and a floor that may still be brick or dirt. The second is the converted warehouse or factory from the 1800s and early 1900s, now condo lofts and apartments with heavy timber floors, exposed brick and a condo association. The neighborhood sits on low ground a few blocks from the Delaware River, so cellars run damp year-round and hold well above 60 percent relative humidity through the summer, and mold on joists, on the back of storage shelving and on the base of furred-out walls is the routine finding.

In the converted buildings the pattern is an upper-unit failure, a shower pan, a dishwasher line or an AC condensate drain, that runs across the timber floor and down through the ceiling of the unit below, sometimes two floors down, before it is noticed, and the association needs one report covering every affected unit. Old roof drains and parapets on flat commercial roofs leak into the top-floor units. The combined sewer runs under the whole neighborhood, and an intense summer thunderstorm can push Category 3 water through cellar floor drains and ground-floor fixtures; that material comes out, it is not dried. The crew plans for narrow stairs, freight elevators where they exist, hallway containment and negative air, and for lead paint and asbestos testing before any demolition in buildings this old.

What we see most

Common mold problems in Old City.

Not generic pain points. These are the patterns that make up most Old City calls, ranked roughly by how often they land on the schedule.

  1. Upper-unit leaks in converted warehouses and condo lofts traveling through timber floors to the units below

  2. Brick foundation cellars on low ground near the Delaware River running damp and above 60 percent humidity all summer

  3. Flat and low-slope roof drains and parapets on old commercial buildings leaking into top-floor units

  4. Combined sewer backups through cellar floor drains and ground-floor fixtures in summer thunderstorms

  5. Window and cornice flashing failures on old masonry facades wetting plaster and furring behind the wall

  6. Something else in Old City?

    A smell you cannot place, spots that come back after cleaning, a leak from next door: if it is damp, we can assess it. Tell us what you see and when it started.

    Request an assessment

Services in Old City

Choose the help your Old City property needs.

Every service below is available across Old City and the rest of Center City, with the containment, removal and drying matched to where the growth is and what got wet.

Before we arrive

Four things that help in Old City.

Most of the damage we get called to undo happened after the mold was found, not before. These four steps keep the problem the size it is today.

When cleaning is enough
  1. Stop the water

    If a pipe, appliance or roof leak is still feeding the area, shut the valve or catch the drip if it is safe. Mold work does not hold until the moisture source is under control.

  2. Leave the growth alone

    Do not dry-scrape, sand, wire-brush or spray bleach on moldy drywall, and do not point a fan at it. Disturbing it without containment spreads spores through the house.

  3. Close the door

    Keep the affected room shut, turn off any HVAC return in that room if you can, and keep children, pets and anyone with asthma or a weakened immune system out.

  4. Photograph and note dates

    Timestamped photos of the growth, the stain and any water source, plus when you first noticed it. Adjusters, landlords and buyers all ask for the same record.

Old City questions

What Old City owners ask first.

Straight answers on response times, why local homes grow mold, insurance and how long the work takes.

All questions
How quickly can you get to Old City?

Active water is prioritized over everything else. Typical travel time to Old City addresses is around 30 minutes from the nearest crew, and we confirm a real arrival window when you get in touch rather than a marketing guess. Scheduled inspections and remediation are booked for a day that suits you. While you wait, stop the moisture source if it is safe and keep the affected room closed.

Why do Old City homes grow mold?

The most common pattern we see in Old City is upper-unit leaks in converted warehouses and condo lofts traveling through timber floors to the units below, followed by brick foundation cellars on low ground near the Delaware River running damp and above 60 percent humidity all summer. Colonial and Federal rowhomes, converted warehouses and condo lofts from the 1700s-1900s give moisture plenty of routes in, and Philadelphia summers with dew points in the 65 to 75 degree range keep basement air above 60 percent relative humidity for months. Fix the water first, then remove the growth under containment, then bring the humidity down so it stays gone.

Will insurance cover mold remediation in Old City?

Most Pennsylvania homeowners policies cover sudden and accidental water losses such as burst pipes and appliance failures, and mold that follows one of those losses is usually paid under a mold sublimit, commonly $5,000 to $10,000. Mold from long-term leaks, seepage or humidity is generally excluded, sewer backup needs a water backup endorsement and flooding needs a separate flood policy. We document the source, the extent and the moisture readings from the first visit so the claim reflects what actually happened.

How long does mold remediation take in Old City?

A single contained area such as a bathroom ceiling or one basement wall usually takes two to four working days for containment, removal and cleaning. A Old City basement runs three to six working days, plus five to ten days of drying if the structure is still wet, because stone foundations and slabs give up moisture slowly. Whole-house or multi-room jobs take one to three weeks. Containment stays up until the area passes a visual and moisture check and, where you want it, independent clearance testing.

Mold in your Old City property?

Let's get Old City dry and clear, properly.

Tell us what you see or smell, where it is and whether anything is still wet. A remediation coordinator will confirm coverage for Old City, an arrival window and what your adjuster, landlord or buyer will need.

Mold remediation crew loading HEPA air scrubbers and dehumidifiers into a work van on a Philadelphia street