Mold RemediationResidential4 days on-site

Basement Mold From a Slow Foundation Leak

New Haven, CTFebruary 2025Mold Remediation

After

Before

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64 sq ft

Wall area treated

Days on-site

88%

Spore reduction

Pass

Third-party clearance

Initial Assessment

What Happened

The homeowner finished half their basement five years ago and stopped using it last winter when a musty smell got bad enough to keep the kids out. Our inspection found a horizontal foundation crack behind the framed wall, with active seepage and mold colonies on the back side of the drywall.

Damage Inventory

Scope of Damage

Finished Wall Cavity

Severe

Back of drywall, fiberglass batt insulation, and bottom plate of the framed wall all colonized.

Concrete Slab

Moderate

Surface mold on the slab where the wet baseboard had been sitting. HEPA-vacuumed and antimicrobial-treated.

Stored Boxes

Moderate

Cardboard storage boxes adjacent to the wall colonized. Contents inventoried and either cleaned or discarded.

Restoration Process

How We Solved It

1
Source Repair Coordination
Recommended a foundation specialist for the crack injection. We held containment until the source repair passed.
2
Containment & Negative Air
Critical barrier sealed off the affected wall. HEPA AFD ran negative pressure throughout.
3
Selective Demolition
Drywall, insulation, and bottom plate removed and bagged. Studs cleaned in place.
4
HEPA Cleaning & Antimicrobial
Studs and slab HEPA-vacuumed, then botanical antimicrobial applied with full label dwell time.
5
Clearance Sample
Third-party post-remediation verification before reframing. Counts within 75% of outdoor control.