The Winter Construction Problem That Can Put a Hospital Project Behind Schedule
Pouring concrete during a Michigan winter creates a problem you can't simply schedule around.
Temperatures drop.
Wind moves through an open structure.
Heat escapes.
Moisture gets where you don't want it.
And the concrete still needs the right conditions for placement and curing.
For hospital construction teams working against critical structural milestones, waiting for better weather isn't much of a strategy.
That's exactly the challenge faced during winter construction at University of Michigan Health.
The team needed to keep critical concrete work moving despite Michigan winter conditions.
Instead of trying to change the schedule around the weather, they changed the environment around the work.
RWES was used to create a warm, controlled temporary construction enclosure for winter concrete work.
The weather outside didn't change. The conditions around the work did.
And that's the bigger lesson for hospital and healthcare construction teams working through winter:
You can't control the temperature outside.
But you can control how exposed your project is to it.
Why Winter Concrete Can Become a Hospital Construction Schedule Problem
Cold weather doesn't only make construction uncomfortable.
For concrete work, environmental conditions matter.
Before the permanent building enclosure system is complete, an open structure can be exposed to cold temperatures, wind, moisture, temperature swings, and continuous heat loss.
Meanwhile, concrete placement and curing still need to meet the project's requirements.
On a major healthcare construction project, that creates a bigger scheduling problem.
Concrete work may sit directly in the path of:
Structural milestones
Inspections
Following trades
Interior construction
Equipment installation
Future phases of work
If critical concrete work gets pushed, the impact doesn't necessarily stop with the pour.
One winter construction problem can travel through the schedule.
That's why the goal shouldn't simply be to react to cold weather.
The better question is:
How can we create the conditions the work needs regardless of what's happening outside?
UM Health Needed Controlled Conditions for Winter Concrete
The University of Michigan Health project involved a major healthcare construction effort with work extending from 2025 into 2026.
One of the pressure points was winter concrete.
The team needed conditions that could support concrete placement and curing while Michigan temperatures dropped.
Without temporary protection, the structure could remain exposed to:
Cold air.
Wind.
Moisture.
Heat loss.
Changing exterior conditions.
The project didn't simply need something covering an opening.
It needed an environment the team could better control.
How RWES Changed the Conditions Around the Work
RWES was installed directly to the structural steel, creating a temporary building enclosure around the work area.
That changed how the team could approach winter conditions.
Instead of continuously trying to heat an area exposed to the outdoors, the enclosure helped contain the environment around the concrete work.
RWES helped:
Contain heat within the enclosed area
Reduce cold-air infiltration
Block wind
Reduce moisture intrusion
Maintain more consistent temperatures
Create more stable conditions around concrete placement and curing
The objective wasn't to make a Michigan winter warmer.
It was to reduce how much control Michigan winter had over the construction environment.
Stop Heating the Outdoors
This sounds simple, but it's one of the biggest challenges with winter construction.
You can add heat to an open construction area.
But if warm air is constantly escaping and cold air is constantly entering, maintaining the desired conditions becomes much harder.
Wind enters.
Warm air leaves.
Heating equipment has to keep replacing lost heat.
A tighter construction site enclosure helps contain the environment you're already spending money to create.
At UM Health, vertical seam flap detailing was used to help reduce air leakage and heat loss while providing additional protection against moisture intrusion.
That helped create a tighter enclosure around the winter concrete work.
Don't just create heat. Keep it where the work is happening.
Can Temporary Insulation Help During Winter Hospital Construction?
Yes. Some projects need additional thermal performance beyond enclosure alone.
RWES can be configured with temporary insulation when greater temperature control is required.
Insulated RWES configurations can provide approximately R-12 thermal performance, helping reduce heat transfer between the protected construction area and exterior conditions.
For winter healthcare construction, that can help contractors maintain more consistent conditions while reducing exposure to extreme exterior temperatures.
Temporary insulation can also help reduce condensation and create a more comfortable environment for crews.
The exact enclosure and insulation strategy should always be based on the project's climate, phase, specifications, and environmental requirements.
But the basic idea is simple:
Create the conditions the work needs instead of hoping the weather provides them.
Getting Enclosed Quickly Matters Too
A temporary enclosure isn't helping your schedule while crews are still trying to get it installed.
Speed matters.
RWES can enclose approximately 15,000 square feet per day with a four-person crew, allowing large exposed areas to be protected quickly.
At UM Health, the project team specifically noted how quickly the system went up.
They also reported that the vertical seam flaps were easier to work with than the zip-tie-through-grommet method they had previously used.
The sooner an area is protected, the sooner contractors can begin establishing the conditions needed for the work.
Get enclosed faster. Establish controlled conditions sooner. Keep construction moving.
Construction Weather Protection Is Really About Predictability
Winter creates uncertainty.
A contractor can't control tomorrow's temperature, wind, snow, or precipitation.
But a construction weather protection strategy can reduce how much of the project remains directly exposed to those changes.
Once an area is enclosed, teams have greater ability to manage the conditions inside instead of reacting every time exterior conditions change.
That can mean:
More predictable working conditions.
Better heat retention.
Protection from wind and moisture.
Fewer weather-related interruptions.
Greater control over critical work.
For a major hospital construction project, predictability matters.
The more control you have over the construction environment, the less control the forecast has over your schedule.
How Do You Protect Concrete During Winter Construction?
Cold-weather concrete protection should follow the project's concrete specifications, approved procedures, applicable standards, and site-specific requirements.
A temporary construction enclosure can be one part of that strategy by helping create a protected environment around the work.
RWES can help reduce direct exposure to wind, precipitation, and cold exterior air while helping contain heat within the enclosed area.
The enclosure itself does not determine concrete curing requirements.
Instead, it gives the project team a more controllable space in which the required concrete protection and temperature-control plan can be carried out.
How Do You Protect a Hospital Construction Project Before the Building Is Fully Enclosed?
Permanent exterior walls, glazing, windows, and doors aren't always finished when structural and interior work needs to continue.
That's where a temporary building enclosure system can help.
RWES can protect exposed floors, openings, building perimeters, scaffolding, penetrations, and other work areas before the permanent building envelope is complete.
For winter hospital construction, that can help reduce exposure to:
Cold temperatures
Wind
Snow and precipitation
Moisture
Heat loss
Instead of waiting for permanent enclosure, contractors can establish temporary protection earlier in the construction schedule.
Can You Keep a Construction Site Heated Before the Building Is Fully Enclosed?
A temporary enclosure can help contain heated air and reduce direct exposure to exterior conditions.
RWES can also incorporate insulation when additional thermal performance is required.
The goal is not simply to add more heat.
It's to create an enclosure that helps retain the environment the project is trying to maintain.
For winter construction, that can make heating efforts more effective and working conditions more consistent.
Can a Temporary Construction Enclosure Be Made More Weather-Tight?
Yes.
RWES offers vertical seam flaps designed to reduce gaps between adjacent panels.
These can improve protection against wind, rain, dust, and debris while reducing air leakage.
At UM Health, the vertical seam flap detailing helped create a tighter enclosure for winter concrete work and reduce heat loss.
For cold-weather construction, those small gaps can matter when you're trying to maintain more stable conditions inside.
Can Temporary Construction Enclosures Handle Strong Wind?
RWES is a tensioned enclosure system designed for demanding construction environments and has withstood winds of more than 100 mph.
Project-specific performance depends on the system configuration, structure, attachments, engineering requirements, and site conditions.
For winter hospital construction, wind resistance matters for another reason too:
Wind can accelerate heat loss and make maintaining stable conditions inside an exposed structure more difficult.
Blocking that wind is an important part of creating a controlled winter work environment.
Can a Temporary Construction Enclosure Move as the Hospital Goes Up?
Yes.
Winter protection isn't always needed in the same place for the entire project.
Concrete progresses.
Floors change.
Permanent walls and glazing are installed.
Interior work advances.
New areas become exposed.
RWES is reusable and reconfigurable, so panels can be removed, relocated, and used again as construction progresses.
Instead of purchasing a temporary solution for one opening or one point in the schedule, contractors can plan how the enclosure will continue providing value through multiple phases.
Protect one area. Move it. Reconfigure it. Protect the next.
For phased hospital construction, that can help reduce repeated material purchases and unnecessary waste.
Can Weather Protection and Fall Protection Work Together?
Winter weather doesn't eliminate the other risks around an active construction site.
Crews may still be working near exposed building perimeters and leading edges while temporary weather protection is required.
RWES Guardwalls can combine enclosure with fall protection and leading-edge protection, allowing contractors to coordinate certain perimeter-protection needs with the weather enclosure.
RWES Guardwalls are designed to exceed applicable OSHA 1910.29 guardrail requirements.
The project's overall construction safety program, hazards, applicable regulations, and site-specific safety plan still determine the fall-protection systems and procedures required.
But weather protection and perimeter protection don't necessarily have to be treated as completely unrelated temporary problems.
Can RWES Be Installed for Us?
Yes.
Contractors can choose how they want to handle installation.
Supply Only: RWES delivers the complete system for your crew to install with detailed shop drawings and virtual support.
Supply With Lead Hand: RWES provides the system and sends an experienced lead hand to guide your crew on site.
Supply & Install: RWES handles delivery, installation, and teardown for a turnkey solution.
That gives project teams flexibility based on workforce availability, schedule, and how much installation support they want.
What Else Can RWES Protect on a Hospital Construction Project?
Winter concrete is only one application.
RWES can support exterior construction needs including:
Concrete pours and curing protection
Multi-story enclosure
Scaffold enclosure
Deck and floor slab protection
Building penetrations
Exterior renovations and façade work
Equipment and material protection
Temporary access corridors
Roof tie-ins
Leading-edge protection
It can also be used for interior applications such as:
Dust and debris containment
Occupied-building separation
Temporary walls and partitions
Corridor protection
Restricted work zones
Temperature-controlled workspaces
Phased construction areas
Available upgrades include insulation, vertical seam flaps, integrated doors and windows, fire-retardant coating, custom decals, and scaffold integration.
The point isn't to make every enclosure identical.
It's to configure the enclosure around what the jobsite actually needs.
UM Health Didn't Wait for Better Weather
That's what makes this project such a useful example for other healthcare construction teams.
The team had critical concrete work.
Michigan had winter.
Neither one was going anywhere.
Instead of allowing exterior conditions to determine when the work could happen, the project created a more controlled environment around it.
RWES helped contain heat.
It reduced exposure to cold air and wind.
Vertical seam detailing helped reduce air leakage and moisture intrusion.
And the system went up quickly so the team could get protected and continue working.
They couldn't control winter.
They could control how much winter affected the jobsite.
Frequently Asked Questions
What is a temporary construction enclosure?
A temporary construction enclosure is a barrier system used to separate active construction from exterior weather or surrounding environments while permanent portions of the building remain incomplete.
During winter construction, it can help create a more protected workspace before permanent walls, glazing, windows, and doors are finished.
How do you keep rain, snow, and wind out of a building during construction?
A construction weather protection system can temporarily enclose exposed areas before the permanent building envelope is complete.
RWES creates a tensioned weather enclosure that helps protect exposed construction from rain, snow, wind, and changing exterior conditions.
Can temporary construction enclosures be insulated?
Yes.
RWES can incorporate temporary insulation when a project requires additional thermal performance. Insulated configurations can provide approximately R-12 thermal performance, helping reduce heat transfer and maintain more consistent conditions inside the protected area.
Can doors and windows be added to a temporary construction enclosure?
Yes.
RWES can include integrated doors and viewing windows to provide crew access, material movement, visibility, and site supervision while maintaining enclosure around the work zone.
Are temporary construction enclosures reusable?
RWES is designed to be reusable and reconfigurable and is Cradle to Cradle Certified.
Panels can be removed, relocated, and reconfigured as construction progresses rather than being limited to one opening or one phase of the project.
How do I know what temporary enclosure my hospital project needs?
Start with the conditions threatening the work.
Are you losing heat?
Is wind entering the structure?
Does concrete work need a controlled environment?
Are rain or snow reaching unfinished areas?
Does the enclosure need to move later?
Would insulation improve thermal performance?
Do you also need leading-edge protection, doors, scaffold integration, or other upgrades?
RWES can be configured around the specific requirements of the project rather than forcing every jobsite into the same enclosure setup.
Don't Plan Your Hospital Construction Schedule Around the Forecast
Cold weather is going to happen.
Wind is going to happen.
Temperatures are going to change.
Your construction schedule still has milestones to hit.
The better strategy is to reduce how much control those exterior conditions have over the work.
That's what the UM Health project demonstrates.
A properly planned temporary construction enclosure can help create a more controlled environment for winter concrete work, retain heat, reduce exposure to wind and moisture, and give contractors greater control during cold-weather healthcare construction.
Control the environment. Protect the concrete work. Keep the hospital construction schedule moving.
Keep Reading: More Hospital Construction Insights
The Hospital Construction Risks That Start Before Interior Work Begins
See why temperature, wind, moisture, and an incomplete building enclosure can create risks before valuable interior construction begins.
The Early Construction Decisions That Can Protect a Hospital Project for Year
Learn why hospital construction teams should plan for the weather they'll face months from now, not just today's conditions.
The Hospital Construction Strategy Top Contractors Don’t Want to Work Without
See how the same adaptable enclosure strategy can address winter, water, wind, equipment access, and changing construction phases.
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