Attic and roof-deck mold from condensation
Dry ice reaches the wood grain and truss crevices that sanding misses, with no moisture added to an already humid assembly and no sanding dust to clean out of insulation cavities.
Research Triangle — North Carolina
Mold Remediation in Raleigh-Durham, NC
Dry ice blasting removes mold growth and staining from joists, subfloor sheathing, band boards, studs, and roof decking without adding a drop of water to an assembly that is already fighting humidity.
Serving Wake, Durham, Orange, Johnston counties and nearby Cary, Chapel Hill, Apex along the I-40 / I-540.
Local conditions
Why Raleigh-Durham changes how this job is done
Piedmont humidity with long shoulder seasons. Attic decking and crawlspace framing cycle through condensation from April into October, which is why wet-washed mold in the Triangle frequently returns within 12-18 months.
What a Raleigh-Durham mold scope looks like
- Step 01
Moisture and cause assessment
Pin and pinless moisture readings on framing plus a look at the actual driver — condensation, ground moisture, plumbing, or storm intrusion. Cleaning without the cause fixed is a repeat call.
- Step 02
Containment and negative air
Poly containment, HEPA negative air machines, and CO2 monitoring in the work zone. Occupied areas of the building stay isolated from the blast media stream.
- Step 03
Dry ice blast pass
Media is driven at documented pressures so growth and staining lift out of the wood grain and truss crevices that sanding and wire wheels physically cannot reach.
- Step 04
HEPA vacuum and verification
Surfaces and horizontal collection areas are HEPA vacuumed, then photographed and documented for third-party clearance testing.
Standard of care
Work is scoped to the IICRC S520 principle of physical source removal — the growth comes off the substrate rather than being encapsulated or killed in place — with containment, negative air, and HEPA filtration through the whole blast window.
Common Raleigh-Durham calls
Validated equipment cleaning for life sciences
CO2 sublimates completely, leaving no media residue to reconcile in a cleaning validation, and the process is documented with pressure and dwell settings per asset.
Historic tobacco-warehouse masonry
Soot, whitewash, and creosote residue come off soft brick and heavy timber without the substrate loss that sand or soda blasting causes.
Mold questions from Raleigh-Durham property owners
Does dry ice blasting kill mold?
We do not make a kill claim. Dry ice blasting physically removes mold growth and staining from the substrate, which is what the remediation standard actually asks for. Any antimicrobial application is a separate, optional step after source removal.
Will the wood be damaged?
Pressure is set per substrate and validated on a test panel before full-scale work. Dry ice is softer than sand or soda, so structural framing, heart pine, and soft historic brick clean without the substrate loss abrasive media causes.
How long does a crawlspace take?
Most single-family crawlspaces are a one- to two-day blast window depending on square footage, joist depth, and access. There is no dry-down period afterward, so the encapsulation or dehumidification trade can follow immediately.
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