For lasting strength, beauty and efficiency in an affordable door system. Semko has a great variety of vinyl replacement patio doors.

Patio doors improve both the appearance and the function of your home.  Excellent in summer to open up your house, but with the new thermal glass technology your house remains insulated during those cold Chicago winters.  Our doors feature a triple locking system for maximum security and peace of mind.  1" insulated glass saves you money, and keeps your family safer.  We are so sure our patio door will perfrom to your satisfaction, that it is warrantied for life.