Professional Window Installation & Replacement Services
Energy-efficient window upgrades including replacement windows, new window installation, sealing, and trim repairs—built for comfort, durability, and long-term performance.
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High-Performance Window Installation Built for Comfort and Efficiency
Windows impact insulation, indoor comfort, and long-term moisture protection. Professional window installation ensures proper fit, secure fastening, weather sealing, and clean trim finishing—helping reduce drafts, prevent water intrusion, and improve overall energy efficiency.
We provide window replacement and new window installation services for residential properties, including removal of old units, frame evaluation, precision leveling, and full perimeter sealing. Whether you’re upgrading drafty windows, improving curb appeal, or completing an exterior renovation, we focus on correct installation practices that support long-term performance.
In addition to window installs, we handle window trim repair, frame adjustments, and sealing improvements to ensure the entire window system functions as intended—not just the glass.
What Clients Say About Our Window Work
Alec and crew did a great job on our camp updates! The best part...Alec always answers messages! That's huge!
Kate L.
McGuire Brothers are prompt, communicative, professional and affordable. All while performing top notch work. I highly recommend them!
Zack R.
Very responsive and thorough. Clear and easy to deal with. Highly recommend!
Danielle G.
Our Window Installation Services
Complete window solutions including replacement windows, new installs, sealing, and trim work—delivered with precision and professional finishing.
Replacement Window Installation
Replacing aging or drafty windows improves insulation, reduces air leakage, and enhances overall home comfort. Proper window replacement ensures a secure fit, precise leveling, and professional sealing to prevent moisture intrusion and energy loss.
Key Points:
• Removal of outdated or damaged windows
• Frame inspection and structural evaluation
• Precision leveling and fastening
• Weatherproof perimeter sealing
• Clean interior and exterior trim finishing
• Improved insulation and draft reduction
New Construction Window Installation
New construction window installation requires accurate framing alignment, moisture barrier integration, and proper flashing techniques. This service is ideal for home additions, major renovations, and structural upgrades.
Key Points:
• Rough opening preparation
• Flashing and moisture barrier integration
• Secure anchoring and frame stabilization
• Weather-tight sealing systems
• Structural reinforcement where needed
• Professional trim and finishing work
Energy-Efficient Window Upgrades
Modern energy-efficient windows reduce heat transfer, improve insulation performance, and help regulate indoor temperatures. Proper installation maximizes thermal efficiency and long-term savings.
Key Points:
• Improved thermal performance
• Reduced air leakage
• Enhanced indoor comfort
• Lower energy consumption
• Insulated frame and glass options
• Long-term performance durability
Window Sealing & Draft Reduction
Drafty windows can lead to moisture damage and higher energy bills. Professional sealing and reinforcement improves protection around window frames and reduces air infiltration.
Key Points:
• Perimeter sealing improvements
• Insulation reinforcement
• Leak detection and mitigation
• Weather stripping upgrades
• Moisture protection enhancement
• Prevention of structural deterioration
Window Trim & Frame Repairs
Damaged trim or deteriorated framing can compromise structural integrity and appearance. Professional repair restores stability and protects surrounding materials.
Key Points:
• Trim replacement and refinishing
• Frame reinforcement and repair
• Rot or moisture damage mitigation
• Structural stabilization
• Seamless finish detailing
• Long-term protection solutions
Our Recent Projects
Areas We Serve
McGuire Brothers Carpentry proudly serves Old Town, Bangor, Orono, Brewer, Hampden, Milford, Veazie, Hermon, Glenburn, and Bradley, Maine, along with surrounding communities within a 30–40 mile radius.
Common Window Installation Questions
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2026 © Mcguire Brothers Carpenty. All rights reserved. Made with ♥
CONTACT US
For any inquiries or questions contact us:
LOCATION
Old Town, ME
04468
OFFICE HOURS
Monday - Saturday:
7AM - 5PM
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2026 © Mcguire Brothers Carpenty. All rights reserved. Made with ♥