The problem behind Negative Air Pressure Containment
Plastic barriers alone leak at seams, zippers and openings. When air inside a barrier is pushed outward by work activity or by a fan, spores escape through those gaps. Negative pressure reverses the flow so leaks pull clean air inward.
Where Negative Air Pressure Containment fits in Boston
In dense Boston housing with shared walls, stairwells and ducts, a leak around a barrier can send particles into a neighbor's unit. Negative air gives owners and managers greater confidence that work stays within its zone.
What Negative Air Pressure Containment covers
- Building a sealed enclosure around the affected area
- Installing a HEPA equipped negative air machine
- Venting filtered air outdoors where possible
- Checking that barriers pull inward and air moves as intended
- Maintaining the setup throughout the work
How the work proceeds, step by step
Seal the enclosure
Barriers, seams and openings are sealed as tightly as practical.
Place the machine
A negative air machine is positioned to draw air from the zone.
Exhaust safely
Filtered air is discharged outdoors or through additional filtration.
Check the pull
Plastic should billow slightly inward. If it does not, we find and fix leaks.
Keep it running
The setup stays active until cleaning and clearance checks are done.
Good to know before you call
Negative pressure is most useful where occupants are sensitive or where neighbors are close. It is common in healthcare, school and multifamily projects, though any job can benefit.
Good negative air depends on good sealing. A powerful fan with poor barriers wastes effort. We spend time on seams and openings first, because that is where particles try to escape.
Questions about Negative Air Pressure Containment
How is this different from regular containment?
Regular containment is a barrier. Negative air adds filtered airflow that keeps particles from escaping.
Is it noisy?
The machines make some fan noise, similar to a large box fan. We plan placement with that in mind.
