Best Replacement Windows

Check out our selections for the best composite windows from many of the most popular manufacturers and window makers, including Okna, Great Lakes and more.

Okna Starmark

The Okna Starmark or 900 Series is the composite window from Okna - its a bulky frame, but does off clean sightlines. It comes in four exterior color options and either a white or wood laminate interior, which does a good job of mimicking the texture and look of real wood. The Starmark also offers some very nice hardware options and can be ordered as a double hung, slider, casement or bay/bow option. The double hung gets a .25 U-value, .28 SHGC, .05 AI and .50 VT. The Starmark is at the top of the list when it comes to quality composites.

Okna Window Prices

Great Lakes EcoSmart Windows

The Great Lakes EcoSmart window is a high efficiency composite frame that is somewhat oddly not listed on their website. It has a 1 piece welded sloped sill that contractors really like, an I Core non metallic spacer, high end aluminum die cast hardware, as well as very good weatherstripping, seals and glazing. The window achieves impressive numbers .26 U-value and .06 AI. The upgraded ecoMaxKR glass will lower the U-factor down to .15, very impressive.

Great Lakes Windows Cost