Short answer: Yes, absolutely.

Over time, the sealant (usually silicone or butyl rubber) around your window frames degrades due to UV exposure, rain, wind, and temperature changes. When this happens, you will notice drafts, water leaks, or condensation between the glass panes.

Resealing UPVC windows is not only possible, but it is also a recommended maintenance task that can save you hundreds of pounds on heating bills and prevent serious structural damage to your home.