Firstly, regular cleaning of the uPVC frames with mild, soapy water and a soft cloth will keep them looking new and prevent the buildup of dirt and grime. Avoid using abrasive cleaners or harsh chemicals that can damage the uPVC surface. For the glass panes, use a glass cleaner or a mixture of vinegar and water for a streak-free shine. Inspect the seals and weather stripping periodically to ensure they are intact and free from damage, replacing them if necessary to maintain the window’s insulation properties. Lubricate the hardware, including hinges and locking mechanisms, annually with a silicone-based lubricant to keep them operating smoothly. Finally, ensure the drainage holes in the window frame are clear of blockages to prevent water buildup.