Storm Window Installation Guide
Complete step-by-step instructions for installing storm windows. Most homeowners can complete installation in under an hour per window with our detailed guide, tools list, and expert tips.
Tools & Preparation
Most tools are commonly found in home toolkits. Professional installation is rarely needed.
Essential Tools
- Tape Measure: For final measurements and positioning
- Level: 4-6 foot level for proper alignment
- Screwdriver Set: Phillips and flathead
- Drill with Bits: For pilot holes and screws
- Step Ladder: For reaching high windows safely
- Safety Glasses: Eye protection during installation
Optional Tools
- Utility Knife: For cutting and adjustments
- Caulk Gun: For sealing if needed
- Pencil: For marking pilot holes
Safety First
Always wear safety glasses when drilling or working with tools. Use a stable step ladder for high windows, and have a helper for larger storm windows. Work in well-lit conditions.
Time Estimate
Most storm windows can be installed in 30-60 minutes per window. Plan for 2-3 hours total for multiple windows, including preparation and testing time.
Vertical Storm Window Installation
Prepare the Window Opening
Clean the window frame and ensure the interior window is fully closed. Remove any existing screens or storm windows.
- Close the interior window completely
- Remove existing screens
- Clean the window frame thoroughly
- Ensure the frame is dry
- Check for obstructions
Position the Storm Window
Place the storm window against the exterior frame and align it properly.
- Hold storm window against exterior frame
- Ensure window sits flush against frame
- Check that window opens freely
- Verify alignment using level
- Mark mounting clip locations
Install Mounting Clips
Secure the storm window using the provided mounting hardware.
- Mark pilot hole locations
- Drill pilot holes
- Attach mounting clips
- Ensure clips are secure but not overtightened
- Test installation stability
Install the Screen
Attach the removable screen panel to complete the installation.
- Insert screen panel into track
- Ensure smooth sliding
- Check screen stays in place
- Test removal and replacement
- Verify proper tension
Final Testing
Test all functions and make any necessary adjustments.
- Test opening and closing panels
- Verify smooth screen operation
- Check sealing and weather resistance
- Make necessary adjustments
- Clean exterior
Common Mistakes to Avoid
Measuring Incorrectly
Always measure the window opening (jamb), not the glass. Double-check measurements.
Installing on Dirty Surfaces
Clean all surfaces thoroughly before installation for proper adhesion.
Over-tightening Hardware
Use appropriate torque—overtightening can damage frames or hardware.
Skipping the Level Check
Always use a level to ensure proper alignment during installation.
Installing in Poor Weather
Install during fair weather to allow proper curing of sealants.
Testing Checklist
- Window Operation: Test opening and closing all panels smoothly
- Screen Function: Verify screen slides and stays in position
- Weather Sealing: Check for gaps and proper sealing
- Hardware Security: Ensure all clips and screws are secure
Common Issues & Fixes
- Window Won't Stay Open
- Adjust sash balances or check for obstructions in the track
- Screen Won't Slide Smoothly
- Clean tracks and apply silicone lubricant
- Air Leaks Around Frame
- Check weatherstripping and add foam tape if needed
- Condensation Between Windows
- Improve ventilation or add desiccant packets
Ready to Install Your Storm Windows?
Our expert support team is available if you need assistance.