UPVC windows and doors should provide an excellent seal against the elements, but over time they can start to let in cold air. Understanding where the draught is coming from is the key to fixing it effectively.
Finding the Source of the Draught
The most common sources of draughts in UPVC windows and doors are: perished or cracked rubber seals and gaskets, failed or worn-out pile seals (the brush-like seal around sashes), locking points not engaging correctly (meaning the window or door isn't pressing the seals tight against the frame), a dropped or misaligned door or window, and gaps in the glazing bead where it meets the frame.
Rubber Seal and Gasket Replacement
The rubber seals on UPVC windows and doors have a finite lifespan — typically 15 to 25 years before they start to harden, crack, or pull away from the frame. Replacement seals can be ordered to match most standard UPVC profiles and fitting is straightforward for a professional. New seals immediately restore a weathertight fit and can make a noticeable difference to comfort and energy bills.
Fixing Misaligned Windows and Doors
If the draught is because the window or door isn't closing tightly against the seals, no amount of seal replacement will fully solve the problem. The root cause — dropped hinges, failed locking points, or a warped frame — needs to be addressed first. The Glass Guardian provides comprehensive diagnostics to identify the true source of draughts and carry out the appropriate repairs.
Need a UPVC Repair in Birmingham or the Black Country?
The Glass Guardian provides fast, affordable UPVC window and door repairs across Birmingham, Dudley, Walsall, Wolverhampton, and the surrounding area. Call for a free quote.