Our Manufacturer

Window Source of the South – Our Manufacturer

The windows we install are manufactured by Great Lakes Windows. Window Source locations have the ability to choose from a few of the top window manufactures in the country, so why Great Lakes? Great Lakes Windows is a branch of PlyGem windows, one of the top 5 window manufacturers in the world. This gives consumers the comfort of knowing that their Window Source lifetime warranty is backed by a manufacturer who has been in business for decades.

Like The Window Source, Great Lakes has built its reputation on keeping things simple. As one of the most respected vinyl replacement window and patio door brands in the country, Great Lakes Windows have been helping homeowners save on energy costs for almost 40 years. Great Lakes has built a reputation for using state-of-the-art technology, modern equipment, and cutting edge operational techniques. With history backing their products all the way back to 1981, Great Lakes Windows will continue to provide the best high-performing windows in the industry.

Great Lakes Windows Affiliations
When buying new windows, you want to make sure you’re investing in high-quality products. Windows from Great Lakes Window are affiliated with ENERGY STAR, the Window & Door Manufacturers Association, the National Fenestration Rating Council, the National Accreditation and Management Institute, and a member of the United States Green Building Council. You can trust that the windows and patio doors you purchase from Great Lakes Window are built to last from years to come.

When checking out reviews on Great Lakes Windows, first go to a trusted source – the BBB. Great Lakes Window has A+ rating with the Better Business Bureau. Some other sources – You can also google Great Lakes Windows reviews for real customer experience reviews. Most of The Window Source locations nation wide use Great Lakes as their preferred manufactures as well so check out some of the over 35 locations personal company reviews.

Where Old-World Craftsmanship Creates Products with Timeless Appeal.
ProVia is nestled within the rolling hills of Sugarcreek, Ohio, the heart of the nation’s largest Amish population. The company was started in a garage by Bill Mullet more than 40 years ago and has grown into a nationally known manufacturer of high quality entry door systems, energy-efficient windows, super polymer vinyl siding and artfully-crafted, manufactured stone. ProVia has built a reputation in the building products industry for quality, old-world craftsmanship and personal care for customers, which extends to every part of our culture. The company has been through many changes to accommodate its growth, including expansions, acquisitions, and the implementation of state-of-the-art production equipment. The current headquarters, constructed in 1984, underwent major renovation and expansions in 1993, 2001 and 2005 and 2012/2013.

Today, ProVia remains privately owned by the Mullet family and continues to invest in its facilities, employees, customers and research & development. The company continues to manufacture outstanding replacement door, window, vinyl siding and manufactured stone products with a dedicated growing team that distributes products throughout most of the United States.

Our Promise

We promise, with a manufacturer like Great Lakes, and Provia you’ll always receive top-notch materials at the best price and with a warranty to give you peace of mind.