Use isopropyl alcohol and compressed air (or a hairdryer on cool) to blast dust out of the crack.
Remove the window. Place it in an oven at 50°C (122°F) for 4 hours to boil off moisture, then inject new sealant into the edge. Risk: High risk of melting or warping. caravan window repair
At the very end of the crack (the pointy tip), drill a 2mm hole. This circular hole distributes stress and prevents the crack from traveling further. Use isopropyl alcohol and compressed air (or a
Place masking tape on the interior side of the window, pulling it tight so the sticky side is facing outward, covering the hole. covering the hole.