Alberta Mold Pros Inc. was contacted after a prospective homeowner discovered visible mold in the basement furnace room during a pre-purchase home inspection in Calgary.
During the home inspection, discoloration and suspected microbial growth were observed on the drywall surrounding the sump pump area in the furnace room. Because mold contamination can indicate hidden moisture issues within wall cavities, the client requested a professional mold inspection and remediation assessment prior to completing the home purchase.
Our inspection confirmed active mold growth on the drywall around the sump pump and further investigation identified additional contamination within the adjacent wall cavities.
Elevated moisture levels within these concealed spaces had allowed mold to develop behind the finished wall surfaces.
Mold Inspection Findings
During the inspection, our team identified several areas of concern within the basement utility room.
Findings included:
- Visible microbial growth on drywall near the sump pump
- Moisture intrusion within the surrounding wall assembly
- Mold contamination within adjacent concealed wall cavities
- Conditions suitable for continued mold amplification if left untreated
Because mold was present within both exposed drywall and hidden cavities, controlled mold remediation was recommended to safely remove affected materials and prevent cross-contamination within the home.

Basement Mold Remediation Process
To address the contamination, Alberta Mold Pros implemented a controlled mold remediation protocol within the basement furnace room.
The remediation scope included:
- Establishment of containment barriers to isolate the work area
- Negative air pressure using HEPA air filtration equipment
- Removal of mold-impacted drywall around the sump pump area
- Selective opening of adjacent wall cavities where contamination was identified
- Removal of affected insulation and building materials
- Detailed HEPA vacuuming of exposed structural components
Opening the concealed wall spaces allowed technicians to access and remove hidden mold growth that had developed behind the finished surfaces.

Antimicrobial Treatment and Final Cleaning
After contaminated materials were removed, all exposed structural framing and surfaces were cleaned and treated using Benefect® Decon 30, a botanical antimicrobial solution commonly used in professional mold remediation.
This step helps eliminate residual microbial contamination while preparing the area for rebuilding.
Post-Remediation Cleaning and ULV Fogging
Once remediation was complete, the basement underwent a detailed post-remediation cleaning process.
This included:
- HEPA vacuuming of all surfaces within the containment area
- Detailed wipe-down of structural components
- ULV fogging to distribute antimicrobial treatment throughout the space
ULV fogging helps ensure that remaining airborne spores and difficult-to-reach surfaces are properly treated.
Mold Found During a Home Inspection?
Mold is frequently discovered during pre-purchase home inspections, especially in basement utility rooms, furnace rooms, and areas around sump pumps where moisture can accumulate.
If mold is identified during a real estate inspection, a professional mold inspection and remediation plan can help ensure the problem is properly addressed before the home purchase is finalized.
Alberta Mold Pros provides mold inspection, mold testing, and professional mold removal services throughout Calgary and surrounding communities.