PROLITE - Wisconsin’s First Choice for Windows and Doors

PROLITE Building Supply has earned its place as one of Wisconsin’s leading distributors of windows and doors.  Builders, architects and remodelers throughout Milwaukee, Madison and Southeastern Wisconsin turn to the specialists at PROLITE Building Supply for a full range of replacement and new-construction windows and doors. You can count on PROLITE for the highest-quality window and door products, all Energy Star and NFRC certified for superior energy performance. We take pride in offering many of the most respected brands in the business – at FACTORY DIRECT PRICES.

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But It’s Service That Really Sets PROLITE Apart.

PROLITE Building Supply is with you every step of the way. We look forward to assisting you in choosing the correct window and door for your application, many with lifetime manufacturer warranties. Installation is performed by factory-trained experts. And once your windows and doors are in place, we’re here for you with ongoing customer support that’s second to none.