Is epoxy or polyaspartic better for a Calgary garage that has in-floor heating?

Polyaspartic is the better choice for Calgary garages with in-floor heating. While both coatings can handle heated floors, polyaspartic's superior flexibility and thermal stability make it far more reliable when dealing with Calgary's extreme temperature cycling combined with radiant heat systems.

The key advantage of polyaspartic over epoxy in heated Calgary garages is thermal expansion management. Your in-floor heating system creates consistent temperature changes as it cycles on and off, while Calgary's chinook winds can swing outdoor temperatures 20-30 degrees in hours. This creates a complex thermal stress pattern that rigid epoxy coatings struggle to handle. Polyaspartic maintains flexibility across a much wider temperature range, stretching and contracting with the concrete substrate without cracking or delaminating.

Polyaspartic also cures properly in Calgary's low winter humidity conditions. Traditional epoxy can struggle to achieve full cure when humidity drops below 20% (common in Calgary winters), leading to soft spots and poor chemical resistance. Polyaspartic is less sensitive to humidity during application and achieves full cure more reliably. This matters because garage floors with radiant heating are often installed during winter months when the heating system is most active.

Installation timing is critical with in-floor heating systems. The radiant system should be turned off 48 hours before coating application and kept off until the coating has fully cured — typically 3-5 days for polyaspartic versus 7-10 days for epoxy. This shorter cure time makes polyaspartic more practical for occupied homes where you need the heating system back online quickly.

From a performance standpoint, polyaspartic offers better UV stability if your garage has windows or overhead doors that let in Calgary's intense high-altitude sunlight. It also provides superior chemical resistance to road salt and ice melt products that Calgary vehicles track in throughout the long winter season.

Cost considerations in Calgary run $3,500-$5,500 for polyaspartic versus $2,500-$4,000 for epoxy on a standard two-car garage. The premium is justified by the longer lifespan — expect 15-20 years from quality polyaspartic versus 8-12 years from epoxy in Calgary's challenging conditions.

Professional installation is strongly recommended for heated floors. The installer needs to coordinate with your heating system, ensure proper surface preparation (crucial with radiant heating), and apply the coating at optimal temperatures. Moisture testing is especially important with radiant systems, as heated concrete can mask moisture issues that will cause coating failure.

You can find experienced garage coating contractors familiar with radiant heating systems through the Calgary Construction Network directory. Look for contractors who specifically mention experience with heated floors and can provide references from similar installations in Calgary's climate.