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Outdated doors can be a source of tremendous energy loss for your home, as heating and cooling seeps out through cracks or warped frames. When it’s time for an update, check out the first-class selection of Beloit doors available at Lakeland Building Supply. Since 1976, we’ve offered a wide range of top-quality home products, including energy-efficient Beloit entry doors and patio doors. 


Lakeland Building Supply is a family-owned company committed to providing local homeowners and contractors with the best doors in Beloit. Our premium product offerings include: 


  • Beloit Patio Doors
  • Beloit Entry Doors
  • Fiberglass and Wood Doors 

Customizable Entry Doors

Lakeland Building Supply provides both professionals and DIYers with a top-tier variety of customizable replacement doors. In addition to our range of high-end products, we also offer experienced design services. Our staff can help you find the perfect solution from our vast selection of Beloit entry doors. 


Beloit’s Source for Patio Doors 

When you’re looking for new doors in Beloit, it’s important to find a product that can withstand the variable Wisconsin climate. The superior patio doors from Lakeland Building Supply offer an indoor-outdoor feel with energy-efficient performance. You can choose from a number of styles, including sliding or French doors. 


High-Quality Fiberglass and Wood Doors 

Whether you prefer the timeless elegance of wood doors or the low-maintenance longevity of fiberglass doors, Lakeland Building Supply can provide exactly what you need. Our beautiful Beloit doors come in a variety of colors and finishes, with a wide range of hardware options to suit your preferences. 


Learn More About Our Selection of Beloit Doors Today 

Lakeland Building Supply is the area’s superior source for industry-leading new doors! Come visit our showroom to learn more about our doors, windows, and siding in Beloit, WI, or fill out our quick online form to request a free, no-commitment quote for sliding patio doors. 


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