Impact Window Maintenance Guide for Florida Homeowners
The good news: impact windows are low-maintenance. Most homeowners only need a quarterly clean and an annual hardware check to keep them performing perfectly for 30+ years.
The Good News About Impact Window Maintenance
Unlike accordion shutters that need annual track lubrication, spring adjustments, and panel checks, impact windows require minimal care. The glass itself is virtually indestructible under normal conditions. Your main jobs are keeping salt and debris off the surface and lubricating the hardware once a year.
Cleaning Schedule by Frequency
Rinse with fresh water
Critical for coastal homes within 1-2 miles of the ocean. Salt spray deposits within hours of a storm. Rinse all glass and frames from top to bottom. Extra urgent after storms.
Full glass cleaning
Clean glass with mild dish soap and water using a squeegee or microfiber cloth. Wipe down frames. Check weep holes at the bottom of the frame and clear with a toothpick if clogged.
Hardware inspection and lubrication
Inspect all hinges, locks, and handles for corrosion. Lubricate with silicone spray (never WD-40). Check frame seals for cracking or gaps. Inspect glazing compound around glass edges.
Professional inspection
Have a licensed contractor inspect frame seals, glazing compound, structural attachment points, and hardware. Identify any issues before they become expensive problems or void your warranty.
How to Clean Impact Glass Properly
Use These
- Mild dish soap + water
- Squeegee or microfiber cloth
- White vinegar (50/50 with water) for hard water spots
- Fresh water rinse after storms
- Soft-bristle brush for frames
Never Use These
- Windex or ammonia-based cleaners (damages Low-E coating)
- Abrasive pads or steel wool (scratches glass)
- Razor blades (can chip the interlayer edge)
- WD-40 on hardware (attracts dirt, degrades seals)
- Petroleum-based products on vinyl frames
Frame Care by Material
Aluminum Frames
- Wipe down with mild soap and water quarterly
- Check for surface oxidation (white chalky residue) — apply aluminum polish annually
- Inspect weep holes at frame base — clear if clogged
- Coastal homes: rinse monthly, check for corrosion quarterly
- Replace any corroded screws with stainless steel hardware
Vinyl Frames
- Wipe clean with mild soap — no scrubbing needed
- Avoid petroleum-based cleaners (degrade vinyl over time)
- Check for UV yellowing after 10-15 years — sign of frame aging
- Do not paint vinyl frames — causes adhesion failure and voided warranty
- Vinyl is generally lower maintenance than aluminum in coastal environments
Common Issues and How to Fix Them
Stiff or hard-to-operate window
DIY FixLubricate tracks and hardware with silicone spray. Never use WD-40 — it attracts dirt and degrades rubber seals.
Condensation between the glass panes
Call a ProThis means the insulating seal has failed. File a warranty claim if within warranty period. Outside warranty, replace the glass unit (not the entire window).
Weep holes clogged
DIY FixThe small holes at the bottom of the frame drain rainwater. Clear with a toothpick or thin wire. Clogged weep holes cause water to pool and can damage the sill.
Hardware corrosion (coastal homes)
ModerateCheck all exterior hardware quarterly. Replace corroded screws and handles with stainless steel hardware. Apply a light coat of silicone-based protectant to metal hardware annually.
Hard water spots on glass
DIY FixUse white vinegar diluted 50/50 with water. Apply, let sit 5 minutes, then wipe with a microfiber cloth. For severe buildup, a commercial hard water remover safe for Low-E glass may be needed.
Salt spray deposits on glass or frames
DIY FixRinse with fresh water within 48 hours of a storm or heavy salt exposure. Do not let salt dry on the surface — it can etch glass and corrode aluminum frames over time.
Warranty Maintenance Requirements
PGT and ESW both require regular cleaning and maintenance for warranties to remain valid. This isn't buried fine print — it's critical if you ever need to file a warranty claim.
PGT Warranty Requirements
Regular cleaning with approved non-abrasive, non-ammonia cleaners. Lubrication of hardware annually. Warranty periods: lifetime on glass, 10 years on hardware, 5 years on finish.
ESW Warranty Requirements
Cleaning with mild soap and water. No ammonia or abrasive products. Annual inspection of weep holes and hardware. Typical warranty: 10 years on insulated glass, 5-10 years on hardware.
When to Call a Professional
Frequently Asked Questions
How often do you need to clean impact windows?
For most South Florida homes, clean impact windows quarterly (every 3 months). Coastal homes within a mile of the ocean should rinse with fresh water monthly to remove salt spray deposits. After any storm or hurricane, rinse all windows immediately to prevent salt and debris from etching the glass or corroding the frames.
Can you use Windex on impact windows?
No. Windex and other ammonia-based glass cleaners can damage the Low-E coating on impact glass and degrade the rubber seals around the frame over time. Use mild dish soap diluted in water with a squeegee or microfiber cloth. For hard water spots, white vinegar diluted 50/50 with water is safe and effective.
How long do impact windows last in Florida?
Well-maintained impact windows from major brands like PGT and ESW typically last 25-30+ years in Florida. The glass itself rarely fails; the most common issues are hardware wear and seal degradation, both of which can be repaired or replaced without replacing the entire window. Proper cleaning and annual hardware lubrication significantly extend the life of the installation.
Do impact windows need to be resealed?
The exterior glazing compound and frame seals should be inspected annually and professionally inspected every 5 years. If you notice condensation between the glass panes (not on the surface), that indicates a failed insulating seal — this requires a warranty claim or glass replacement. Surface seals around the frame may need re-caulking after 10-15 years depending on exposure.
What voids impact window warranty?
Common warranty violations include: using ammonia or abrasive cleaners on the glass, using petroleum-based products on vinyl frames, applying films or tinting after installation (without manufacturer approval), failing to maintain regular cleaning (PGT and ESW require documented cleaning for warranty validity), and unauthorized modifications to the frame or glass.
Need New Impact Windows or a Professional Check?
Learn how to measure for new windows or browse our marketplace for in-stock inventory.