But then you sit inside your caravan with a cup of tea. The rain is hammering outside, but your repaired window holds firm. No draft. No drip. The landscape outside is clear, and the faint repair line is just a story—a battle scar from a B-road in the Lake District or a rogue tree in a French campsite.
Place masking tape on the interior side of the window, pulling it tight so the sticky side is facing outward, covering the hole.
The crack will now be sealed, but a visible line remains. Follow the "Polishing Method" above to blend the line into the surrounding area.
A damaged caravan window is not merely an aesthetic issue. It compromises security, thermal efficiency (leading to condensation and mold), and structural integrity. Replacing a caravan window can cost anywhere from £200 to over £1,000 depending on the make and model. Fortunately, many common issues—cracks, leaks, and hazing—can be repaired at home with the right tools and techniques.
Drill two tiny 2mm holes at the bottom edge of the window frame (one at the lowest point, one an inch away). This allows the moisture to evaporate out. Insert a desiccant packet into one hole with a syringe. Seal holes with silicone. Result: Clear window, but no insulation.
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.
