Construction Enclosures: 5 Types and How to Choose One

A construction enclosure seals a work area off from the space around it: weather and debris outside, dust and pathogens inside. Five types cover most jobs, and two of them work in buildings that never close. Those are the two we build at STARC Systems.

We learned how much that matters at Abbott Northwestern Hospital. Our walls held ICRA Class IV containment through a full renovation, and as the team there put it, the staff never saw the work happening behind them.

Below, we break down all five types of construction enclosure and how to match one to your project.

What Is a Construction Enclosure?

A construction enclosure is a temporary structure that separates a work area from its surroundings. Exterior enclosures shield the work from weather, while interior enclosures shield occupants from dust and pathogens. Examples range from scaffold sheeting to gasketed hospital walls.

A similar term we should differentiate is building enclosure, also called the building envelope. This one is permanent: the separator between a building's conditioned and unconditioned environment, verified through building enclosure commissioning.

The construction enclosures we cover here are the temporary kind, and all five types below go up for the job and come down when it's done.

The 5 Types of Construction Enclosures

The five types fall into two camps: exterior enclosures that keep weather and debris off the work, and interior enclosures that keep dust and pathogens away from the people still using the building.

1. Weather Protection Enclosures

A weather protective enclosure is a temporary barrier of polyethylene sheeting stretched over scaffolding or a structural frame. It keeps rain and snow off a partially built structure so trades can keep working.

String-reinforced film carries a polyester scrim layer that prevents tearing, and premium enclosure films run up to four years outdoors. Clear film also lets sunlight through.

Fire-retardant grades exist for jobs where code requires them, and common ones pass NFPA 701 or ASTM E84 testing.

Best for exterior shell work in cold or wet seasons. Interior dust and infection control call for a different type.

2. Scaffold Containment Enclosures

Scaffold sheeting systems wrap exterior scaffolding to meet containment requirements for dust and overspray, including on sites where crews sandblast or water-jet.

Debris containment laps the bottom sheet over the upper one to trap falling material, while weatherproofing laps the upper sheet over the lower to shed water.

Best for exterior blasting and water-jetting jobs.

3. Modular Temporary Buildings

A temporary building structure is a modular or relocatable building that gives a construction site enclosed space for a limited time. Suppliers such as Kelly Klosure build them from panels that crews reconfigure as the project evolves.

Secure zones for tools and materials can reduce theft and vandalism, and doors control who enters. Custom builds fit tight or complex layouts, even around fixed elements.

Best for sites that need weather protection and security. Pick a modular building when the site needs its own roof and lock, and pick interior walls when the building already has both.

4. Interior Temporary Wall Enclosures

For commercial renovations in occupied buildings, interior temporary walls partition the work zone from active operations, sealing in dust and debris while people keep using the space. Free-standing panels connect with a lift-and-drop joint that locks in seconds, so two workers can install 100 feet in about an hour with no specialty crew.

RealWall™ is STARC's flagship interior wall. Top-and-bottom foam gaskets form a dust-tight seal that exceeds ICRA Class IV/V standards, and the panels integrate with negative air setups.

RealWall cuts renovation noise by up to 50%, so occupied spaces stay usable during the build, and every STARC wall meets ASTM E84. Each panel is reusable over 50 times, so the same walls move from one renovation to the next and stay out of the landfill, and they clean up with water or solvent-based disinfectants for healthcare spaces.

Medtronic expanded its cleanroom manufacturing space behind STARC temporary walls and maintained cleanroom integrity during the expansion.

RealWall handles most interior renovations, where sound attenuation and a finished look count. For the jobs it doesn't, STARC makes three more systems:

• LiteBarrier™ for fast, movable containment

• FireblockWall™ for projects where code calls for a one-hour fire-rated assembly

• StackBarrier™ for tall spaces such as atriums and data halls

Best for renovations where people or equipment stay on the other side of the wall.

5. Infection Control Anterooms

A temporary anteroom is a small enclosed space between a work zone and an occupied area. It controls what moves in and out of the workspace, and it keeps negative airflow steady during entry and exit.

Cleanrooms use positive-pressure buffer rooms instead. Best practice puts the construction entrance away from patient travel areas to reduce exposure risk.

The preferred method is exhausting negative air by directing it outdoors through a window.

Crews can discharge HEPA-filtered air into an adjacent space when they verify the filtration and confirm it leaves airflow and pressure relationships intact. Particle counting confirms filter efficiency and flags containment breaches.

STARC panels create temporary anterooms that exceed ICRA Class IV/V, with integrated pressure points so crews connect monitoring equipment directly.

Hendricks Regional Health converted eight ICU rooms to negative air during its COVID-19 response, and the machines created a wind-tunnel effect that demanded sturdy, cleanable walls. In a couple of weeks, the hospital built 43 negative air rooms with STARC walls.

Best for hospital renovations under ICRA and isolation builds where every entry point needs a plan.

Modular Walls vs. Poly and Drywall

Plastic sheeting goes up fast, but it fails ICRA requirements because it seals poorly and tears easily. Drywall creates dust when crews set it up and again when they take it down.

For a short, low-risk job in an unoccupied space, plastic sheeting still works. Once people occupy the space, or once ICRA applies, the modular wall justifies its higher upfront cost.

How to Choose a Construction Enclosure in 5 Steps

Each step narrows the field, and by the last you'll know which enclosure your project needs.

1. Locate the work. Exterior jobs point to types 1 through 3, and interior jobs point to types 4 and 5.

2. Rate the space. Judge its air quality and sensitivity. A general office can use reusable panels. Patient care areas need negative air and ICRA compliance, and ICRA Class V adds real-time pressure monitoring.

3. Check code. Confirm the ICRA class and fire-rating requirement. If code calls for a one-hour fire-rated assembly, choose FireblockWall.

4. Match the wall to the schedule. Phased or repeat work favors panels you own, while a single short job can rent.

5. Verify the seal. Ceiling lines leak most often, so check them first. A smoke pencil along the ceiling seam shows leaks that a visual check misses, and a manometer confirms negative air pressure before dusty work begins.

Match the Enclosure to Your Job

A construction enclosure works best when it matches the job, and STARC builds the two types for occupied interiors. Wall Wizard recommends a STARC solution after a few questions about your project, or you can request a quote for a recommendation built around your job.

Frequently Asked Questions

What is the difference between a construction enclosure and a building enclosure?

The main difference between a construction enclosure and a building enclosure is permanence. A construction enclosure isolates a work area temporarily, while the building enclosure is the permanent envelope between a building's conditioned and unconditioned environment.

What contains dust in an occupied building?

Gasketed modular temporary walls contain dust in an occupied building. STARC's RealWall isolates the work zone and connects to negative air machines.

What is an anteroom in construction?

An anteroom in construction is a small enclosed space between a work zone and an occupied area. In healthcare, it runs under negative pressure, which gives crews a place to clean people and materials before they pass through.

What does ICRA mean in construction?

ICRA stands for Infection Control Risk Assessment. It combines the type of construction activity with the patient risk group to assign a precaution class from I to V.