Frame and sash corners are hot-fusion welded into one piece, maximising structural integrity and preventing joint leaks during freeze/thaw cycles.
Because every corner is literally melted together—not just screwed—there are zero seams for water or wind to creep through. That matters in Calgary, where –30 °C mornings can flip to a +10 °C Chinook the same afternoon. The one-piece frame flexes as a unit, so it won’t rack, loosen or whistle under 100 km/h prairie gusts. You stay draft-free, and the window keeps its ENERGY STAR® rating for decades without seasonal adjustments.
A full 7/8″ Low-E/Argon IGU with premium black “S” Class SuperSpacer® comes standard; upgrade to 1 ⅜″ triple glazing for even greater energy savings and condensation control.
At our 1 045 m elevation UV levels are roughly 10 % higher than at sea level—great for tan lines but brutal on cooling costs. The Low-E coating reflects that extra solar load while dense argon slows conductive heat loss on –25 °C nights. The warm-edge spacer reduces edge-of-glass condensation, so you won’t wake to frozen sills or peel-and-stick mould treatments. Opting for triple pane can push U-values low enough to unlock Canada Greener Homes rebates and slash winter gas bills.
Heavy die-cast cam locks and closed-back keepers clamp the meeting rail tight, boosting security and compressing weather-seals for a draft-free fit.
Unlike thin stamped latches that bend over time, these zinc-rich castings resist forced entry and won’t corrode when Calgary’s road salt becomes airborne. Each throw of the lock draws the upper and lower sashes together, stiffening the frame and squeezing the bulb seal. That double duty blocks cold air and gives you peace of mind whether you’re away for a ski weekend or just sleeping with a cracked upper sash.
An interior bulb-seal pocket stops air infiltration where sash meets frame — crucial when Chinook winds gust across the foothills.
The soft, hollow gasket compresses under pressure, forming a dynamic barrier that actually tightens as wind speed rises. It also filters dust, pollen and street noise that ride every warm-front gust. By keeping humid indoor air out of the glazing pocket, the seal slashes winter condensation and prevents the black mildew dots that love to colonise cold vinyl corners.
A tape-glazed system plus a flexible co-extruded exterior seal keep rain out and maintain IGU stability under temperature swings.
Traditional silicone beads can pull away when frames expand and contract 40 °C in a day; our 360° high-tack tape bonds glass to sash like an automotive windshield, eliminating voids where meltwater can pool and freeze. The co-extruded outer gasket flexes, not cracks, during hailstorms or pressure-washing, ensuring your sealed unit stays clear—not foggy—for the life of the window.