Aluminium Window Maintenance

Aluminium windows are the workhorse of Indian homes: light, strong, fire-safe and slim-framed. Looked after, an aluminium frame can last up to 45 years — longer than uPVC or most timber. But "maintenance-free" is a myth the market sells you. Aluminium does not rot and does not warp, yet its hinges seize, its sliding tracks clog with dust, and near the sea it pits and whitens with salt corrosion. The good news: care is genuinely simple, mostly DIY, and takes about an hour twice a year.

This is the upkeep guide. If you are still deciding which window to buy — section sizes, glazing, thermal break — read our Aluminium Windows in India buying guide instead. THIS guide assumes the window is already on your wall and you want to keep it working and looking new.

Aluminium does not rot — so people stop checking it. The frame survives; the hinge, lock and track are what fail. Service the moving parts and the window outlives you.

Why aluminium needs its own routine

Aluminium itself is corrosion-resistant because it grows a thin oxide skin. But two things break that protection:

• Galvanic and salt corrosion. Where aluminium meets steel screws, or where coastal salt settles, you get white powdery pitting. Once the surface pits, the finish is gone for good.
• Surface finishes are thin. The colour you see is either an anodised layer (an electro-chemical oxide, very hard) or a powder coat (a baked polyester paint film, around 60 microns). Abrasive scrubbing, scouring pads or harsh solvents cut straight through both. There is no easy field repair — so the whole game is not scratching them.

The twice-a-year schedule

Aluminium is forgiving, so a light routine is enough. Do a deep clean and service at the start and end of the monsoon. Coastal homes step everything up — see the salt note below.

Washing the frames — gently

Mix a few drops of mild dish detergent in lukewarm water. Wipe the frames with a soft cloth or microfibre, then rinse with clean water and dry with a second cloth to avoid water spots. That is the whole method.

What you must never use on aluminium:

Abrasives and solvents dull a powder coat and can etch anodising permanently — and unlike paint on a wall, you cannot simply recoat it at home.

Cleaning sliding-window tracks

The bottom track of a sliding aluminium window is the single biggest maintenance job in India, because dust, grit and monsoon grime pack into it and the rollers grind to a halt. A sticky slider is almost always a dirty track, not a broken window.

Step by step:

1. Slide the sash to one side and vacuum the loose grit from the exposed track.

2. Use a stiff dry brush or an old toothbrush to lift packed dirt from the corners and the weep holes at the track ends.

3. Wipe the channel with a damp cloth, then dry it.

4. Run a thin film of silicone lubricant along the running surface and the rollers. Wipe off the excess.

Do not pack grease into the track. Grease is sticky and grabs every speck of dust, turning into a black paste that jams the rollers worse than before. Use a dry-ish silicone spray instead.

Lubricating hinges, stays and locks

Every 6 months, give the moving hardware a silicone spray or a drop of light machine oil. This cuts friction and, just as importantly, keeps a protective film over steel pivots so they do not rust and seize. Skip this and a casement stay will stiffen, then snap.

Apply a small amount to:

• Friction stay arms and their pivot points (the metal arms that hold a casement open).
• Hinge knuckles.
• The handle gearbox / espagnolette of multi-point locks — a puff of silicone into the mechanism keeps the latch points moving.
• Roller axles on sliders.
• Lock barrels — use a dry graphite or silicone lock lube, not oil, which gums up the pins.

Then open and close the window a few times to spread it. Wipe off any drips so they do not stain the wall or attract dust. For deeper hardware servicing and de-rusting, see our companion Window Hardware Maintenance guide, which covers handles, rollers and friction stays across all frame types — this section is just the aluminium-specific lube cycle.

Anodised versus powder-coat care

Both finishes want the same gentle wash, but they age differently.

A chip in a powder coat exposes bare aluminium and is the spot where coastal corrosion starts — dab a matched touch-up enamel over it promptly. Anodised scratches cannot be hidden but the exposed aluminium re-oxidises and rarely corrodes inland.

The coastal salt rinse

If you live in Mumbai, Chennai, Kochi, Goa, Visakhapatnam or any home within a few kilometres of the sea, salt is your enemy. Airborne salt settles on the frames, holds moisture, and drives corrosion under the finish — white pitting, then powdery oxidation, then a frame that looks decades older than it is.

The defence is almost laughably simple: a monthly fresh-water rinse. Hose or wipe down the frames and sills with plain water to wash the salt film off before it can bite. Pay attention to screw heads and any powder-coat chips, where corrosion starts first. Marine-grade homes should also prefer stainless-steel hardware and a thicker (architectural-grade) powder coat at purchase — but for an existing window, the rinse is what saves it.

When cleaning is not enough — repair or replace

Be honest about the line between DIY and a professional. Cleaning, lubricating, replacing rollers and swapping a gasket are all weekend jobs. But foggy double glazing means the insulated glass unit has failed and must be replaced — the frame stays, the glass goes — and that is a glazier's job, not a reseal. Because aluminium frames last so long, you will almost always replace glass or hardware long before you replace the frame itself.

For the full when-and-how-to-replace decision across every material, and the seasonal routine that ties all of this together, start at the pillar: the Home Window Maintenance Guide. To compare aluminium's upkeep burden against uPVC and timber before your next purchase, see the Window Frame Materials Comparison.

The one-hour habit

Aluminium rewards a tiny, regular habit far more than an occasional heroic deep-clean. Twice a year: wash with mild soapy water and a soft cloth, lubricate every moving part with silicone, clear the tracks and weep holes. Add a monthly fresh-water rinse if you are coastal. Do that, and the frame on your wall will still be sliding smoothly in four decades.

References

• Bureau of Indian Standards (window and aluminium product standards): https://www.bis.gov.in/
• Hindalco Aluminium (architectural aluminium, finish and care information): https://www.hindalco.com/
• Aluminium Association (anodising and powder-coat finish basics): https://www.aluminum.org/
• Family Handyman (cleaning and lubricating window tracks and hardware): https://www.familyhandyman.com/
• ENERGY STAR (window care and when a sealed unit must be replaced): https://www.energystar.gov/products/residential_windows_doors_skylights