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Project · Stone Mountain, GAMold Remediation in a Church Basement
A below-grade fellowship level in Stone Mountain — open hall, corridors, stairwells and a youth room — had mold established across the ceilings and wall assemblies. The space is used by the congregation every week, so the work had to be contained and the building had to be handed back safe.
This was a mitigation-only scope. We assessed, contained, removed the affected material, treated and dried the structure, and cleared it. The build-back was left with the church to schedule on its own budget and timeline.
Why Below-Grade Church Levels Are High Risk in Atlanta
A basement on Georgia red clay is fighting ground moisture every day of the year.
Clay holds water against foundation walls for days after rain and releases it slowly inward. Below-grade masonry stays cool, so warm humid air condenses against it. Metro humidity sits above the threshold where colonies establish reliably for months at a stretch.
Church buildings add a factor a house does not have. Conditioning often runs hard for a few hours a week and then stops, so the space cycles between conditioned and unconditioned air rather than holding steady. Below grade, that swing puts moisture into porous material and leaves it there. Suspended ceiling tiles, panelling and the cavities behind them hide the result until the smell reaches the hall.
We scoped the full level with thermal imaging and moisture meters before assuming any boundary — the same moisture detection process behind every job.
Containment in a Building That Stays in Use
Disturbing an affected ceiling without containment would push spores into the sanctuary and the rest of the building.
Sealed barriers isolated the below-grade level from the floors above, and HEPA-filtered air scrubbers held the work zone under negative pressure. Air moved into the containment and never out of it, which is what makes it possible to work inside an occupied building without contaminating the clean side.
That sequencing is not discretionary under IICRC S520. On an institutional property it also matters for liability: a congregation includes children and older adults, and the documentation trail has to show the clean side stayed clean.
Removal, Treatment and Drying
Porous material that could not be cleaned came out inside the containment and was bagged before it left the level.
Ceilings came down to the joists, wall assemblies were opened back to the framing, and stairwells were stripped where readings marked them. With the structure exposed, framing was HEPA-vacuumed and treated with an EPA-registered antimicrobial.
Drying equipment was then set against the exposed assembly rather than aimed at the middle of the rooms, and readings were logged at each visit until the structure reached its dry standard. On a building of this age, structural tear-out also triggers Georgia Environmental Protection Division (EPD) asbestos testing and the 10-day GEOS notification, which we managed in-house rather than leaving to the church.
Cleared and Handed Back, Ready for Build-Back
The scope ended at clearance. Reconstruction was not part of this contract.
Under IICRC S520, a remediation job is not closed on the contractor's own assessment. An independent industrial hygienist performs clearance sampling, and containment comes down only once those results confirm spore levels have returned to safe ranges. That report goes into the permanent file, which matters for the insurance claim and for the trustees' records.
The level was handed back dry, cleared and structurally exposed, so the congregation could plan the build-back around its own budget and calendar. Where an owner does want the rebuild carried under the same contract, we handle that too — see reconstruction and rebuild.
The full protocol is set out on our mold remediation page. If growth is dark and you want the species confirmed before anyone commits to a scope, see black mold removal and Stachybotrys testing. For larger institutional and commercial properties, we scope and document zone by zone on commercial projects.
Full Project Gallery
Ten frames from the same level: the conditions we found, the containment and removal, and the structure left exposed and dry for build-back.
Services Used on This Job
Managing a Church, School or Commercial Property?
Call 404-777-7077 to arrange an assessment.
Tell us which areas are affected and how the building is used through the week. We will scope it zone by zone, contain the work so the rest of the property stays open, and document it for your insurer and your board.
For non-emergency questions, email info@onestop-restoration.com.
24/7 dispatch
Norcross base, on the I-285 corridor.
- 404-777-7077Answered by a live professional, 24 hours a day
- info@onestop-restoration.comFor non-emergency questions
- 6699 Peachtree Industrial BlvdNorcross, GA