Many homeowners face a common dilemma: professional installation for electric windows can cost upwards of $1,000, while doing it yourself can bring that price down to under $500. That’s a significant saving, especially if you enjoy hands-on projects.
But beyond convenience, electric windows also offer energy efficiency, helping to regulate indoor temperatures and reduce your utility bills. Plus, they can increase your home’s value by 10-15%, making this a smart investment. Many models come with safety features such as rain sensors that automatically close the window when bad weather hits.
Why Choose Electric Windows?
Advantages Over Manual Windows
Electric windows offer several benefits that manual windows just can’t match. Imagine controlling your window with a simple remote or even your smartphone. Some models come with automatic timers and weather sensors, so you don’t have to worry about closing windows when it rains.
Another big plus is insulation. Many electric windows come with triple-glazing, which helps keep your home warmer in winter and cooler in summer. This means lower energy bills and a more comfortable living space.
Best Types of Electric Windows
If you’re looking for the best options, here are a few popular ones:
- Velux GPL/GGU Electric Roof Windows: Known for their quality and durability, these feature advanced motor systems and app control.
- Casement Power Kits: These can be added to existing window frames to convert manual windows into power-operated ones.
Cost Breakdown Table
Type Cost Range Features
Velux Electric Roof $800 – $1500 Motorized open, app control
Retrofit Power Kit $200 – $400 Adds power to existing manual windows
Full Skylight $1200+ Solar-powered options
Electric window installation benefits for homes include convenience, energy savings, and increased property value — making them a worthwhile upgrade.
Essential Tools and Materials List
Before you start, make sure you have the right tools and materials. Here’s a detailed checklist to get you prepared.
Tools Checklist
Category Items Purpose
Power Tools: drill, impact driver, multi-tool, angle grinder. Cutting and framing
Measuring Level, tape measure, shims , Ensuring precision and alignment
Safety Gear: Gloves, goggles, ladder. Protecting yourself during work
Materials : insulation collar, felt collar, flashing kit, OB1 adhesive , waterproofing and sealing
Electric Tools Wiring kit, rain sensor, remote , Setting up the electric system
Pro Tip: Renting an angle grinder for cutting rafters can save money — expect to pay around $20/day.
Having these tools on hand will make your project smoother and safer. Don’t rush through preparation!
Preparation Steps Before Installation
Assess Your Space
Start by carefully measuring your window opening. Follow the manufacturer’s specifications exactly — for example, a Velux GPL window might require an opening of approximately 116 x 118 cm.
Next, check your roof’s structure. Look at the spacing between rafters and the pitch of your roof. Most electric windows work best with roof pitches between 15° and 90°.
Safety and Permits
Safety first! Turn off the power in the area where you’ll be working. If you plan to modify structural parts of your roof, check with your local building authority to see if you need a permit. Also, pick a dry day to install — wet conditions can be dangerous and may cause waterproofing issues.
Gather Supplies
Order your window kit, including the frame, motor, insulation collars, and flashing components. It’s best to buy from official suppliers like Velux to ensure compatibility.
Step-by-Step Installation Guide
Frame the Opening
Begin by setting your bottom batten, which supports the window frame. Use a saw to carefully cut the rafters to size. A level is essential here to make sure everything is straight and square. Double-check your measurements before cutting!
install Insulation and Felt Collar
Fit the insulation collar tightly around the opening first. This helps prevent heat loss. Next, install the felt collar to create a waterproof seal. Make sure there are no gaps that might allow water or air to seep through.
Mount the Window Frame
Slide the window frame into the opening. Secure it with screws and use shims to ensure it’s perfectly plumb (vertical). For electric windows, align the motor ports carefully so wiring can connect easily later.
Flash and Waterproof
Apply the flashing kit according to the roof type — there are specialised kits for tiled roofs and for slate roofs. The flashing prevents water from leaking into your home. A pro tip is to overlap the felt collar by at least 2 inches to ensure water runs off properly.
Wire the Electric Components
Connect the window motor to the transformer — most operate on low voltage (12V). Attach the rain sensor and remote control wiring next. Before sealing everything up, test the electrical system to ensure the window opens and closes smoothly. If you’re unsure about wiring, don’t hesitate to hire a professional electrician.
Installation Progress Checklist
- Opening framed
- Insulation and felt collars fitted
- Frame secured and aligned.
- Wiring connected and tested.
This step-by-step approach ensures a safe and effective installation.
Pro Tips for Flawless Electric Window Installation
- Avoid Poor Flashing: About 80% of leaks are due to improper flashing. Take your time here.
- Align Properly: Misalignment can cause the window to stick or not seal correctly.
- Smart Home Integration: Many electric windows can now be controlled via apps for remote control.
- Regular Maintenance: Lubricate window tracks yearly to keep things smooth.
- Roof Variations: Tile and slate roofs require different flashing techniques — consult your kit’s instructions.
Remember, triple-glazed windows can reduce your heating bills by about 20%, so this upgrade pays off in the long run.
Troubleshooting Common Issues
Issue Fix
Window won’t open . Check wiring, reset fuse
Water leaks . Re-seal flashing and felt collar
Motor noise : Tighten electrical connections
Window sticks . Adjust shims for proper alignment
If your window doesn’t operate as expected, these quick fixes often solve the problem.
Cost Savings and ROI
Doing it yourself can save you a lot of money. Here’s a quick comparison:
- DIY Installation Cost: $400 – $900
- Professional Installation Cost: $1,500+
Plus, installing an electric window can boost your home’s resale value by around 5%, making it a smart investment.
Frequently Asked Questions
How long does electric window installation take?Typically, a DIY project takes about 4-8 hours, depending on your skill level.
Do I need an electrician?Usually, no — if your system is low-voltage. However, don’t hesitate to hire a professional if you feel unsure.
Can beginners do this installation?Yes! With this guide, even beginners can confidently install an electric window.
What’s the warranty on Velux electric windows?Velux offers a solid warranty ranging from 10 to 20 years.
Can I install an electric window in an existing roof?Yes, retrofit power kits let you convert manual windows to electric ones without replacing the entire frame.
