Cold weather slows curing, freezes materials and makes sites more dangerous. Here is how contractors keep jobs moving through the winter.
In this article
Why winter needs a plan
Cold weather slows curing, freezes materials, shortens daylight and makes the site more dangerous. Contractors who plan winter protection in the fall keep jobs moving. Those who react to the first freeze lose days, rework and money.
Identify what is weather-sensitive
- Concrete placement and curing.
- Masonry, mortar and grout.
- Drywall finishing, paint and adhesives.
- Roofing and waterproofing materials.
Check manufacturer temperature limits for every material in the winter schedule.
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Temporary enclosures
Poly enclosures, tarps and temporary walls let work continue in protected zones. Plan wind loads, fire safety and access. A poorly secured enclosure becomes a hazard in the first storm.
Temporary heat
Choose heaters based on the space, ventilation and fuel. Fuel-burning heaters in enclosed areas create carbon monoxide risk and need ventilation and monitoring. Indirect-fired units keep exhaust outside the work area.
Fire safety
Keep heaters away from combustibles, provide fire extinguishers and assign someone to check equipment, especially overnight. Many winter jobsite fires start with temporary heat.
Put it in the budget
Winter conditions cost money: fuel, equipment rental, enclosure materials and lower productivity. Include these in general conditions or define them in the contract so they are not a surprise.
Protect the crew
Cold stress, slips on ice and shorter daylight increase injury risk. Provide warm-up breaks, clear walkways, salt and lighting.
Adjust the schedule
Sequence work so that exterior tasks happen before the worst weather and interior work fills the coldest weeks. Communicate the winter plan to the owner early.
Cold-weather concrete
Concrete gains strength slowly in the cold and can be damaged if it freezes early. Plan heated enclosures, insulated blankets, accelerators approved by the engineer and temperature monitoring. Follow the project specifications and industry guidance for cold-weather placement and curing.
Store materials properly
Keep temperature-sensitive materials in heated storage, protect stockpiles from snow and ice and check that deliveries are not left exposed overnight. Frozen sealant or adhesive can ruin a day of work.
Light the site
Shorter days mean more work in low light. Add temporary lighting to walkways, stairs and work areas, and check it daily. Good lighting prevents falls and quality problems alike.
Run tighter jobs and win the right ones.
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Frequently asked questions
Is it safe to use propane heaters in a construction enclosure?
Fuel-burning heaters in enclosed spaces create carbon monoxide risk and require ventilation and monitoring. Indirect-fired heaters keep exhaust outside the work area and are often a safer choice.