Allstate Home Improvement

Allstate Home Improvement installs custom-sized windows, and its main product line is the Energex Elite window system. The site describes Energex windows as energy efficient, with Energy Star qualification, good air infiltration ratings, impact resistance and a strong warranty. Available styles include double-hung, picture, casement, sliding, awning, garden, bay or bow, and special shapes, with several grid patterns.

The company also lists doors, garage doors, roofs, skylights, gutters and siding among the projects it takes on. Homeowners start with a free in-home consultation or a free estimate, which can be requested by phone or through the website form. Service is offered across the entire state of Connecticut. The company's address is in Berlin.