How long should flooring acclimate inside a Calgary home before installation?

In Calgary's extreme climate, hardwood and engineered hardwood flooring should acclimate inside your home for a minimum of 5 to 7 days before installation — significantly longer than the standard 48-72 hours that many manufacturers recommend as a baseline. Calgary's indoor environment, particularly in winter, is so different from the warehouse or truck where flooring is stored that the standard acclimation period simply isn't enough for the material to reach equilibrium.

The reason Calgary demands extended acclimation comes down to the extreme moisture differential. Most flooring is manufactured and stored at 40-50% relative humidity and moderate temperatures. A Calgary home in January may have indoor humidity as low as 15-20% with the furnace running continuously. That's a 20-35 point humidity difference that the wood needs to adjust to. If you install hardwood that hasn't fully acclimated to Calgary's dry winter air, the boards will continue losing moisture after installation and shrink on the floor, creating gaps that wouldn't have appeared if the wood had been given time to reach equilibrium beforehand.

Proper acclimation procedure for Calgary:

Bring the flooring inside and store it in the room (or rooms) where it will be installed, with boxes opened or cross-stacked to allow air circulation around the planks. Many installers slit open the plastic wrapping on each box or remove the planks and stack them with spacers. The key is allowing air to reach all surfaces of each plank. Simply leaving sealed boxes in the room does NOT count as proper acclimation — the plastic wrap traps the manufacturing humidity inside.

Keep the home at normal living temperature (18-22 degrees Celsius) during acclimation. Do not turn the heat down to save money while the house is unoccupied — the flooring needs to acclimate to the conditions it will actually live in. If you're acclimating during a Calgary winter, run your humidifier at the level you plan to maintain year-round (ideally 35-40% RH). Acclimating wood to 15% humidity and then bringing the home up to 40% after installation defeats the purpose.

Acclimation timing by material type:

Solid hardwood requires the longest acclimation — 5-7 days minimum in Calgary, and some experienced local installers recommend a full 10 days during the heating season (November through March). Wider planks and thicker stock need more time because moisture exits the wood more slowly through greater mass.

Engineered hardwood acclimates faster because the plywood core is more dimensionally stable, but still allow a minimum of 3-5 days in Calgary during winter. The real wood wear layer still needs to reach equilibrium.

Laminate technically needs acclimation as well — the HDF core absorbs and releases moisture. Allow 48-72 hours for laminate in Calgary.

LVP, SPC, and vinyl tile are not hygroscopic (they don't absorb moisture), so humidity acclimation isn't relevant. However, these materials do need to reach room temperature before installation — vinyl that's been stored in a cold garage or delivered in -30 weather is stiff and brittle. Allow 24-48 hours at room temperature before installation.

One critical warning: never store flooring materials in an unheated Calgary garage, shed, or unfinished basement during winter for acclimation. These spaces don't represent the conditions the flooring will live in, and the extreme cold can damage adhesives, finishes, and click-lock mechanisms. If you're planning a flooring project, get matched with a professional who handles acclimation correctly — Calgary Floor Installers connects homeowners with local flooring contractors through the Calgary Construction Network for free.

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Looking for experienced contractors? The Calgary Construction Network connects homeowners with qualified professionals:

• PLATINUM Pool & Spa Services Ltd
• Canadian Closet
• Keystone Exteriors
• Mike’s Restoration Service
• Universal Slate International Inc.