Proper installation is crucial to maximize the performance and lifespan of UPVC doors. The first step is accurate measurement. Ensure the door frame is level and square, as even minor misalignments can lead to drafts, leaks, or difficulty in operation. Use a laser level or spirit level to check vertical and horizontal alignment before securing the frame.

Sealing and insulation are next. Apply a high-quality silicone sealant around the frame to prevent water ingress and air leaks. For added thermal efficiency, use expanding foam insulation in the gaps between the frame and the wall. However, avoid overfilling, as this can warp the frame. Many installers recommend leaving a small gap for natural expansion and contraction.

When fitting the door, adjust the hinges carefully. UPVC doors often come with adjustable hinges that allow fine-tuning of the door’s position. Test the door’s operation multiple times during installation to ensure smooth opening and closing without scraping the floor or frame. If the door sags, adjust the hinges incrementally until proper alignment is achieved.

Finally, check the weatherstripping. Ensure that the door’s weather seals are intact and properly aligned. Damaged or misplaced seals can compromise energy efficiency. After installation, perform a water test by spraying the door with a hose to check for leaks. Address any issues immediately to avoid long-term damage. Hiring a certified installer is advisable for complex projects, as improper installation can void warranties.