White two-story house at dusk with black aluminum windows and a black entry door with a glass transom

Window replacement

Replace old windows with European uPVC or aluminum windows, made to your measurements and installed by a trusted partner.

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Replace old windows with more efficient ones

Old windows leak heat and let noise in. We measure your existing openings and have each new window made to size. European windows are quick and clean to fit, so a replacement goes fast.

  • Less heat loss

    Our windows reach a U-factor from 0.12.

  • Quieter rooms

    Our best windows are rated up to 47 dB (Rw) for sound insulation.

  • Trusted installers

    We connect you with trusted installation partners, who remove the old windows, set the new ones and seal around them.

How a window replacement works

  • We measure

    We measure each opening on site, so every window is made to fit.

  • You choose

    Pick the system, opening type, glazing and color. We put it in writing.

  • Delivered and installed

    We deliver to your door, and your installation partner takes out the old window, fits the new one and seals it.

Made to order for your openings

Every window is made in Europe to your measurements, so it fits the opening you already have.

Dining room with floor-to-ceiling glazing

Triple glazing keeps the cold out

Three panes of glass cut heat loss in winter. Triple glazing is standard on Performant 88 and Comfort 76.

Cutaway of a window frame with three glass layers

Better heat insulation

Our windows reach a U-factor as low as 0.12.

Cutaway of a uPVC frame showing its insulation chambers

Keep the look of your home, or change it

60 uPVC finishes and 35 aluminum colors and wood finishes.

Twelve window decors: white, grays, woodgrains and colors