Seasonal installation

There is no best season in Toronto.

Updated 26 October 2026

Winter and summer installation: Toronto winters often sit at 20–30% relative humidity without humidification. Summers often sit at 60–70% without air conditioning. Occupied rooms do best near 35–55%. There is no best season, only those windows, a 3–5 day acclimation, and a gate before the crew starts.

20–30%Typical winter indoor RH, without humidification

60–70%Typical summer indoor RH, without air conditioning

35–55%Occupied rooms, the target this page prints

The full calendar — weeks, lead time, and cure — is the installation timeline .

The dry winter.

Winter installations in Toronto benefit from more contractor availability and often faster scheduling. They also fall in the driest indoor humidity of the year, typically 20–30% RH without active humidification. January through March is that row: run humidifiers before and after install.

Floors Toronto compensates by acclimating boards fully within this drier range and recommending a humidifier be running consistently before, during, and after installation, so the return of summer humidity does not open excessive gaps.

Spring, April and May, is moderate and variable, and it is often the most stable acclimation window because indoor humidity sits closer to 35–55% without a machine doing the work. The acclimation window on this page is still 3–5 days. The service is acclimation .

The humid summer.

Summer installations occur during Toronto’s most humid stretch, often 60–70% RH without air conditioning. Boards acclimate wider than their eventual winter dimension. June through August is that row: expansion gaps are calculated for the contraction that follows.

Floors Toronto leaves appropriate expansion gaps for this seasonal swing, so a summer-installed floor has room to contract slightly through the following winter without excessive gapping.

Floors Toronto adjusted our expansion gaps specifically for a summer install so the floor would not gap excessively once winter dried things out — exactly what happened, with zero issues.

Fall, September and October, is the other moderate window: scheduling is available, and RH is often stable. Year-round care after either season is the humidity and seasonal care guide .

The gate before the crew starts.

The checklist this page prints, before installation is scheduled:

Confirm the home’s actual indoor RH before acclimation is booked.
Run HVAC first. Humidify in winter. Dehumidify or air-condition in summer.
Size expansion gaps for that season’s extreme against the 35–55% target.
Keep the full 3–5 day acclimation window in either season. The calibration changes. The window does not.
Hold 35–55% indoor humidity after installation, whichever season the floor went down.

Any season on this page still names a 35–55% target and consistent HVAC. Slab readings before glue-down are on moisture testing and prep . This page does not print a cure length or a degree.

Floors Toronto supplies 3/4 inch European white oak engineered hardwood (about 19 mm) with free custom stain matching across Toronto, the GTA, Yorkville, and Forest Hill — keep occupied rooms near 35–55% RH.

Questions on this page

Is winter or summer better for hardwood installation in Toronto?

Neither season is universally better. Winter offers faster scheduling but requires active humidification, since indoor RH often drops to 20–30%, while summer’s 60–70% RH requires wider calculated expansion gaps. Spring and fall often provide the most stable acclimation conditions.

Do expansion gaps change based on the season of installation in Toronto?

Yes. Floors Toronto calculates expansion gap sizing from the season’s humidity extreme. Boards installed in humid summer conditions need room to contract through the following winter, and the reverse. The calculation is part of every Toronto installation plan.

Should I run a humidifier if I install hardwood in a Toronto winter?

Yes. Run a humidifier consistently before, during, and after a winter installation. Unmanaged Toronto indoor RH can drop to 20–30% in the coldest months. That keeps the floor closer to the 35–55% target than to the drier winter extreme.

Does acclimation take longer in summer than winter in Toronto?

Acclimation typically takes the same 3–5 day window regardless of season. The target moisture content is adjusted for a drier winter or a more humid summer. The process itself does not change.

Is spring or fall the best time to install hardwood in a Toronto home?

Spring and fall are often the most convenient windows because indoor humidity tends to sit closer to 35–55% without active humidification or dehumidification. Floors Toronto still installs year-round, adjusting acclimation and expansion gaps to the season on the schedule.