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COVID-19 Update: State and local requirements in your area currently consider window replacement and repair for safety, sanitation, and proper operation an essential service. We can address issues related to security, safety, or potential damage regarding your windows, doors, siding and roof. The health and safety of our homeowners and employees is our top priorities. Read More » We are following all CDC guidelines for business and have adjusted our operations to serve you in the safest possible way.

Under this order, Lifetime Windows & Siding will continue to operate as an essential business in the “critical construction” category of this order. The state has asked us to continue to serve our customers and partners during this challenging time, and we will continue to do so with the commitment and quality you expect from Lifetime.

Patio Doors by




Infinity from Marvin fiberglass patio doors are made from Ultrex® fiberglass, which is so strong less of it is needed in the door frames. This means you get bigger views and more daylight. Our sliding doors are engineered to provide effortless operation and reliable performance. Check


Infinity from Marvin patio doors come in a variety of design options to meet your unique taste and needs. Available styles include Sliding French Doors, Inswing French Doors, Outswing French Doors, Sliding Patio Doors and Swinging Patio Doors.


Colorado’s extreme weather conditions require windows and doors that will last. Infinity’s Ultrex® fiberglass is the most durable window and patio door material in the industry. The strength of Ultrex® means no warping, cracking, or premature failure of the frame. Ultrex® is so strong…we guarantee it, for life.


Ultrex® fiberglass is far less thermally conductive than aluminum and insulates much like wood. In fact, all Infinity products are ENERGY STAR® certified. This means your new Infinity patio doors will provide an insulating barrier against extreme weather, keep your home comfortable and reduce your utility bills.