The Ultimate Choice

The ultimate choice for maximum beauty, strength and energy savings.

Sheffield's superior performance starts with innovative engineered components that provide the basis for superior energy savings.

The multi-chamber design of the Sheffield Window helps trap dead air to produce an effective insulating barrier, while fusion-welded frames and sashes provide superior structural strength and create a permanent barrier against air and moisture infiltration. A special multi-layer weather stripping and a superior sash interlock system offer additional barriers to air infiltration adding up to a greater energy savings – and lower utility bills.

Sheffield's Intercept™ Warm Edge Spacer System with high-efficiency insulated glass creates an effective barrier that helps to prevent heat loss during winter or heat gain during the hot summer months. The quality construction ensures that it won't rot, peel, split, corrode or pit. The premium virgin vinyl (PVC) forms the extra-thick walls of Sheffield's sturdy frames and sashes. It's tough, durable and other than an occasional washing, requires minimal maintenance.

To ensure easy opening and closing of the Sheffield Window, the Constant Force balance system and E-Gard operating hardware will continue to operate perfectly, even after decades of regular use. A sloped sill helps prevent water and air infiltration while maintaining the timeless detailed appearance characteristic of double-hung windows. Beveled mainframes on double-hung, sliding and casement windows provide a finished appearance complementing every home style.

Sheffield Fusion-Welded Vinyl Windows

Decorative Options

For your home improvement project, there's no need to limit your design to a standard traditional look. Alside offers an array of grid and glass options to fit any style, any need and any design.

Interior Grids Classic grids are available in complementary white or beige, with Colonial, Diamond, Prairie and Double Prairie patterns. Contoured Colonial grids feature a modeled "cut wood" look and are available in complementary colors and in matching wood grains. Sheffield also offers narrow Colonial grids with a bright-brass finish. All grids are enclosed within the insulated glass unit for easy cleaning.
Cut Glass Sheffield Windows are also available in a variety of cut and polished glass patterns.

Lifetime Limited Warranty

Alside backs all Sheffield Windows with a Lifetime Limited Warranty, an assurance of quality and satisfaction.

Alside and Climatech are registered marks of Alside. Solarban is a registered mark and Intercept is a trademark of PPG Industries