Storm Window Installation: DIY vs. Professional

Storm windows can often be installed by homeowners, but some situations call for professional help. According to the U.S. Department of Energy, proper installation is essential for storm windows to perform as expected.

DIY-Friendly Installations

According to DOE guidance:

Interior Magnetic Panels

Skill level: Easy
Tools needed: Tape measure, scissors, perhaps drill for magnetic strip
Time: 15-30 minutes per window
DIY suitability: Excellent

Interior Compression-Fit

Skill level: Easy
Tools needed: Tape measure (panels ordered to size)
Time: 5 minutes per window (just press in)
DIY suitability: Excellent

Film/Shrink Kits (Temporary)

Skill level: Easy
Tools needed: Hair dryer, scissors, tape
Time: 10-20 minutes per window
DIY suitability: Excellent

Moderate DIY Difficulty

Exterior Triple-Track Storms

Skill level: Moderate
Tools needed: Drill, level, screwdriver, caulk gun
Time: 30-60 minutes per window
Key challenges:

• Accurate measurement
• Working from ladders (second floor)
• Creating weathertight seal
• Level installation for proper operation

DIY suitability: Good for handy homeowners with ground-floor windows

When to Call a Professional

According to FGIA, professional installation recommended when:

Safety Concerns

• Second-story or higher windows
• Difficult access (over porches, near obstacles)
• Large or heavy storm units

Precision Requirements

• Custom-fit applications
• Non-standard window shapes
• Historic homes requiring exact matching

Best Results

• When air sealing is critical priority
• Multiple windows (efficiency of pros)
• When warranty requires professional installation

Installation Best Practices

According to DOE and FGIA:

Accurate Measurement

• Measure at multiple points (frames can be out of square)
• Account for trim and stop positions
• Verify operating clearances

Proper Sealing

• Caulk frame perimeter before installing
• Ensure weatherstripping makes contact
• Check for gaps after installation

Drainage

• Don't seal weep holes (allows condensation to escape)
• Ensure bottom track drains outward
• Prevent water accumulation between windows

Operation Check

• Verify all panels slide smoothly
• Test locks and latches
• Confirm screens fit properly

Cost: DIY vs. Professional

| Installation Type | DIY Cost | Pro Cost |
|-------------------|----------|----------|
| Interior magnetic | $0 (included) | $30-50/window |
| Triple-track exterior | $0 | $50-100/window |
| Custom fit | Not recommended | $75-150/window |

Professional installation typically adds $40-100 per window but ensures proper fit and seal.

The Bottom Line

According to DOE, interior storms are almost always DIY-appropriate. Exterior storms depend on your comfort with ladders, tools, and precise work. When in doubt, professional installation costs modest amounts while ensuring optimal performance.

*For complete storm window guidance, see: [Storm Windows and Doors](/guides/storm-windows-doors)*