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A set of quality replacement windows can help your home stay more comfortable and reduce the amount you pay in HVAC bills, but only if they're installed properly. Installation errors can offset some of the benefits of new windows. That's why you should always leave window installation to a professional home improvement contractor.

3 Reasons You Shouldn't Try to DIY a Window Installation

1. Energy Efficiency

Window installationThe process of mounting, securing, and sealing windows into a wall opening takes considerable experience and skill, not to mention the proper tools and equipment. If you have little experience wielding a caulk gun or setting shims, you could leave gaps between the window and the frame that allow for heat loss. This mistake is easy to make and wastes energy, potentially costing you more on your HVAC utility bills. Moreover, you'll need to pay for a window installation professional to repair the problem.

2. Costly Damage

When you're working with glass and wood trim, the smallest mishap can lead to costly damages. One mistake with the hammer as you're tapping the unit into place and you could shatter the glass. One slip of the pry bar as you're lifting off the outside trim and you could snap the trim in half. To avoid such problems, hire someone with experience to handle the window installation.

3. Warranty

Professionals usually offer a warranty on their work. If something goes wrong after a DIY project, there's no one to hold responsible but yourself. With professional window installation, on the other hand, you can call the contractor if you're dissatisfied with the results and have them make any necessary repairs or adjustments.


Window installation is a complex process that could lead to problems if not completed correctly. For expert workmanship and unbeatable customer care, contact Bel-Aire Home Improvement in Platteville, WI. They serve the entire Tri-State area and offer 24/7 emergency repairs. They also specialize in gutter, siding, and roofing installation. Visit their website to learn more about their window services or call (608) 348-­2381 to request a free estimate.

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