What is a containment enclosure and why is it critical?
A containment enclosure is a sealed, negative-pressure work area that isolates hazardous materials so fibers and dust cannot escape into occupied spaces. It is the single most important engineering control in asbestos and lead work. A proper enclosure uses unused polyethylene sheeting, fully sealed penetrations, critical barriers, airlocks, a multi-stage decontamination chamber, HEPA-filtered negative air machines, and continuous pressure monitoring — all required under OSHA 29 CFR 1926.1101 and CT DPH regulations.
Built to Isolate, Engineered to Pass
We design and build containment for the specific hazard and site — from single-room residential enclosures to large commercial isolation zones. Every enclosure is constructed to maintain negative pressure relative to surrounding areas, drawing air through HEPA filtration so contaminants are captured, not released.
- Unused polyethylene sheeting & sealed critical barriers
- HEPA-filtered negative-air machines with continuous monitoring
- 3-stage decontamination chamber with shower
- Compliant airlocks & controlled entry/exit
Decontamination Chambers Done Right
Our 3-stage decon chambers (clean room, shower, equipment room) allow workers to enter and exit without carrying contamination out of the regulated area. When CT state law requires it, we provide a temporary water hookup to the containment shower for dust control, decontamination, and cleaning.
New Containment for Every Regulated Phase
Because mitigation containment cannot be reused for asbestos abatement, we build new, purpose-built enclosures between phases. This protects negative-pressure integrity, prevents cross-contamination, and keeps the project in full regulatory compliance from start to clearance.
How the Job Gets Done
Engineer
Assess the hazard and site, then design containment sized to the scope.
Build
Erect sealed barriers, airlocks, and a decontamination chamber.
Pressurize
Run HEPA negative-air machines and monitor pressure continuously.
Decommission
Tear down, HEPA-clean, and verify clearance after work is complete.
Containment Services Questions
What is negative pressure containment?
Negative pressure containment keeps the air pressure inside the work area lower than the surrounding space, so air flows in (not out). HEPA-filtered negative-air machines continuously capture contaminants and exhaust clean air, preventing fibers and dust from escaping.
Why can't existing mitigation containment be reused for asbestos?
Mitigation containment is designed for moisture and category-related contaminants, not regulated asbestos fibers. OSHA, EPA NESHAP, and CT DPH require a newly constructed, fully isolated enclosure with unused sheeting and compliant decon systems for asbestos work.
Do you provide decontamination chambers?
Yes. We build compliant 3-stage decontamination chambers with a shower, and provide a temporary water hookup where required by CT state law for proper dust control and worker decontamination.
Can containment be built in an occupied building?
Yes. Engineered containment with critical barriers and negative pressure is specifically designed to allow safe abatement while isolating the rest of an occupied home or commercial building.
Get Your Free Containment Services Estimate
Serving Norwich and all of Eastern Connecticut. Licensed, insured, and ready to coordinate with your insurance adjuster.