Quelle est la meilleure saison pour vernir une terrasse extérieure?
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What is the best season to varnish an outdoor terrace?

Choosing the Ideal Time

The question of the best season to varnish an outdoor terrace is crucial for ensuring the longevity and aesthetics of your space. In Montreal, Laval, Longueuil, on the South Shore and the North Shore, weather conditions play a significant role in this decision.

Optimal Weather Conditions

  • Temperature: Ideally, varnishing should be done at temperatures between 10°C (50°F) and 25°C (77°F). Excessive heat can speed up the drying process and compromise the uniformity of the varnish, while too low a temperature can prevent proper drying of the varnish.
  • Humidity: A relative humidity below 80% is advisable. High humidity can affect the adhesion and finish of the varnish.
  • Precipitation: It is essential to avoid rainy days. The varnish needs time to dry before moisture or dew sets in.

The Best Times of the Year

In Spring

  • Advantages: Moderate temperatures and generally favorable humidity levels.
  • Disadvantages: Risk of spring rains. It is essential to monitor the weather forecast.

In Summer

  • Advantages: The driest period of the year, with many sunny days.
  • Disadvantages: Sometimes excessive heat. It is best to varnish early in the morning or late in the afternoon.

In Autumn

  • Advantages: Pleasant temperatures and low humidity.
  • Disadvantages: Shorter days and an increased risk of precipitation towards the end of the season.

Practical Tips for Successful Varnishing

  1. Wood Preparation: Before varnishing, it is crucial to prepare the surface. Thorough floor sanding (sablage de plancher) removes old layers of varnish and smooths the wood.
  2. Varnish Application: Apply the varnish in thin, even coats. Several coats may be necessary for optimal protection.
  3. Post-Varnishing Maintenance: After varnishing, regular maintenance is necessary to preserve the shine and protection of the wood.

Why Choose Plancher Deluxe for Your Terrace?

At Plancher Deluxe, we understand the importance of a well-maintained terrace. Our varnishing experts, with their extensive experience in Montreal, Laval, Longueuil, and on the South and North Shores, guarantee unmatched quality service. We use advanced floor sanding (sablage de plancher) and varnishing techniques to ensure a perfect finish, adapted to the climatic conditions of the region.


The best season to varnish an outdoor terrace depends on local weather conditions. In Montreal and its surrounding areas, spring and autumn generally offer the best conditions. At Plancher Deluxe, we are here to help you make the right choice and ensure the beauty and durability of your terrace.

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