Maintenance Checklist for Your uPVC Windows and Doors (Season-by-Season)

Posted by | December 8, 2025

One of the best things about uPVC windows and doors is how low-maintenance they are. Unlike timber, they don’t need painting or sealing every few years. But that doesn’t mean they can be ignored entirely. With a little seasonal window care, you can keep your uPVC frames looking great and working smoothly for decades.

Here’s a simple maintenance checklist for uPVC windows and doors in Scotland, broken down by season so you can stay on top of cleaning, lubrication and weatherproofing all year round.

???? Spring: Refresh After Winter

  • Clean uPVC frames: Use warm soapy water and a soft cloth to wash away dirt, salt and grime built up over winter storms. Avoid abrasive cleaners.

  • Check seals and gaskets: Look for cracks or damage that could let in draughts.

  • Inspect for condensation damage: If you see misting between panes, it could be a sign of failed seals.

  • Lubricate locks and hinges: A light spray of silicone lubricant helps keep moving parts working smoothly.

☀️ Summer: Light Maintenance & Ventilation

  • Open and test windows fully: Make sure all sashes and hinges open and close smoothly.

  • Clean glass inside and out: Use a streak-free cleaner to keep views clear in the brighter months.

  • Check ventilation features: Trickle vents should be dust-free so they allow airflow.

  • Touch-up weather strips: Replace any worn ones before the cooler months return.

???? Autumn: Prepare for Colder Weather

  • Inspect drainage holes: Clear leaves and debris from window frames and door thresholds.

  • Check locks and handles: Make sure they’re sturdy and working, security matters when nights get longer.

  • Examine caulking and sealant: Replace if cracked or peeling to keep out draughts and moisture.

  • Deep clean frames: Prevent dirt build-up that could stain or dull the finish.

❄️ Winter: Protection Against Cold & Damp

  • Monitor condensation: Regularly wipe frames to prevent mould and ensure rooms are ventilated.

  • Check for draughts: Run your hand around frames and doors; if you feel cold air, seals may need replacing.

  • Avoid forcing frozen windows: If frames freeze, gently warm the area rather than forcing them open.

  • Keep locks lubricated: Cold weather can cause them to stiffen.

FAQs

How do I stop condensation on my windows in winter?
Use trickle vents or slightly open windows to improve airflow. Running a dehumidifier can also help.

What should I clean uPVC frames with?
Mild soapy water is best. Avoid bleach or scouring pads, which can damage the finish.

How often should I lubricate window hinges?
Once or twice a year is enough, usually in spring and autumn.

What’s the lifespan of uPVC windows and doors?
With proper care, they typically last 20-30 years or more.

Keep Your Windows & Doors in Top Shape

Looking after your windows and doors doesn’t have to be complicated. With a simple seasonal routine, you’ll keep them looking fresh, working smoothly and saving energy all year round.

At The UPVC Company, we provide high-quality uPVC windows and doors across the UK, delivered straight to your door.

Order today with free UK-wide delivery and give your home the upgrade it deserves.