Maintenance & Care Guide

Keep your secondary glazing performing at its best with our simple maintenance tips. Proper care ensures maximum lifespan and continued acoustic and thermal performance.

8 min readLast updated: December 2024

Good News: Minimal Maintenance Required

Secondary glazing is designed to be virtually maintenance-free. Unlike timber windows that need regular repainting, powder-coated aluminium frames require only occasional cleaning to stay looking their best.

Cleaning the Glass

✓ Do

  • • Use a soft, lint-free cloth or microfibre
  • • Use warm water with mild washing-up liquid
  • • Use a squeegee for streak-free finish
  • • Clean from top to bottom
  • • Clean both sides of secondary glazing panels

✗ Don't

  • • Use abrasive cleaners or scourers
  • • Use newspaper (can leave residue)
  • • Use ammonia-based cleaners on frames
  • • Clean in direct strong sunlight (causes streaks)
  • • Use pressure washers

Cleaning Between the Panes

The space between your original window and secondary glazing should stay clean due to the sealing, but occasional dust may accumulate.

  • For sliding panels: Slide to one side to access and clean the inner face of the original window
  • For hinged panels: Open fully for easy access to both surfaces
  • For lift-out panels: Remove the panel carefully (two-person job for large panels)

Cleaning the Frames

Powder-coated aluminium frames are extremely durable and resistant to corrosion. Regular cleaning will keep them looking new.

Recommended Cleaning Method

  1. 1.Wipe frames with a damp soft cloth to remove loose dust
  2. 2.Mix warm water with a small amount of mild soap or washing-up liquid
  3. 3.Wipe down all frame surfaces with the solution
  4. 4.Rinse with clean water and dry with a soft cloth

Avoid Harsh Chemicals

Never use solvents, bleach, or abrasive cleaners on powder-coated frames as they can damage the finish. Avoid ammonia-based products.

Maintaining Moving Parts

Sliding Panels

  • Vacuum tracks: Remove dust and debris from sliding tracks regularly
  • Lubricate: Apply a light silicone spray to tracks once a year (not WD-40)
  • Check rollers: Ensure smooth operation - stiff movement may indicate worn rollers

Hinged & Casement Panels

  • Lubricate hinges: Apply light oil to hinge points annually
  • Check locks: Ensure locks and stays engage properly
  • Adjust stays: Tighten if panels don't stay open at desired position

Seals & Gaskets

  • Inspect regularly: Check seals around the perimeter for damage or gaps
  • Clean gently: Wipe seals with damp cloth - dirt can affect sealing
  • Replace if needed: Worn or damaged seals can be replaced without changing the whole unit

Recommended Maintenance Schedule

FrequencyTask
MonthlyWipe down glass with damp cloth; quick visual check
QuarterlyThorough clean of glass and frames; check seals; clean tracks
AnnuallyLubricate all moving parts; deep clean between panes; inspect hardware
Every 2-3 yearsProfessional service and inspection (optional but recommended)

Common Issues & Solutions

Condensation between panes

Cause: Seal failure allowing moist air between panes
Solution: Check seals for gaps. Minor condensation on cold days is normal; persistent condensation needs professional attention.

Stiff or sticky sliding panels

Cause: Dirt in tracks or worn rollers
Solution: Clean tracks thoroughly and apply silicone lubricant. If problem persists, rollers may need replacement.

Draughts around panel edges

Cause: Worn brush seals or gaskets
Solution: Inspect seals for wear. These can usually be replaced easily and inexpensively.

Lock not engaging properly

Cause: Misalignment or worn mechanism
Solution: Check if frame has moved. Minor adjustments can often be made with a screwdriver. For persistent issues, contact us.

When to Call the Professionals

While most maintenance can be done yourself, some situations need professional attention:

  • Cracked or broken glass
  • Persistent condensation between panes
  • Frame damage or warping
  • Mechanism failure (locks, hinges, rollers)
  • Significant reduction in acoustic or thermal performance

Related Resources

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