How to Maintain Your uPVC & Aluminium Windows for Maximum Lifespan

One of the biggest advantages of uPVC and aluminium windows is how little maintenance they require compared to wood. But "low maintenance" doesn't mean "zero maintenance." A few simple habits, done twice a year, will keep your windows looking pristine and functioning perfectly for 25–40 years. Here's your complete, practical guide.

Cleaning uPVC Windows

uPVC frames are naturally smooth and non-porous, making them very easy to clean. Here's the right approach:

Cleaning Aluminium Windows

Powder-coated aluminium frames need gentle care to preserve their coating and colour finish.

• Use a pH-neutral cleaner mixed with warm water — avoid acidic or alkaline products
• Wipe down with a soft cloth, then rinse with clean water and dry immediately to prevent water spotting
• For coastal homes, clean every 6–8 weeks to remove salt deposits before they cause pitting
• Inspect the powder coating annually for chips or scratches — touch up with matching paint to prevent corrosion underneath

Hardware & Lock Care

The moving parts of your windows — handles, hinges, multipoint locks, and sliding tracks — need periodic lubrication to stay smooth and secure.

• Lubricate hinges and locks with a light machine oil or silicone spray every 6 months
• Never use WD-40 on uPVC hardware — it can degrade rubber seals over time
• Clean sliding tracks with a vacuum brush attachment, then wipe with a damp cloth
• Check that all handles and locks operate smoothly — report stiff or loose mechanisms early to avoid damage

Seals & Gaskets

The rubber gaskets around your window frames are critical for weatherproofing and sound insulation. They degrade faster than the frames themselves.

• Inspect rubber gaskets annually for cracks, shrinkage, or hardening
• Clean gaskets with a mild soap solution and rinse well
• Apply a silicone-based rubber conditioner once a year to keep gaskets supple
• If a gasket is damaged or missing, replace it promptly to prevent water ingress

Seasonal Maintenance Checklist

What to Avoid

• Never use abrasive pads, steel wool, or harsh chemical cleaners on uPVC or aluminium frames
• Don't use bleach directly on frames — it can discolour uPVC and damage the powder coat
• Avoid pressure washing at close range, as it can force water behind seals
• Never paint over uPVC frames — it cracks and peels quickly and voids manufacturer warranties
• Don't ignore a stiff lock or handle — address it early before the mechanism fails

Following these simple steps — about 2 hours of effort twice a year — will keep your uPVC and aluminium windows in showroom condition for decades. If you notice anything unusual (persistent leaks, fogging between double-glazed panes, or a frame that won't close properly), contact our service team at MG Windows & Doors for a quick inspection.