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Have spent a couple of days away and due to the position of the 'van, I noticed a glint of sunlight coming from the front central window (the large one of three). At first I thought that there was the residue of an adhesive strip (but as nothing has ever been attached to the window that seemed unlikely). It was about 4" long and in an almost perfect straight horizontal line. There are gaps in the mark and on closer inspection, appears to be a series of smaller blemishes.

We at first cleaned the inside window, to no avail, and then moved outside and cleaned the outer of the two panes but again making no difference to the blemish. It appears that the outer pane is cracking from inside ie the sealed area. It's not too unsightly, noticeable if you are sitting in a certain seat and with the sun in a particular aspect.

Can anyone advise whether this is normal for a 5 year old 'van? Apart from replacing the window (expensive) is there any remedial work I can undertake to prevent this cracking from spreading? Is it likely that the window will be covered by the 6 year bodyshell warranty (or does this cover water ingress only?). Could anyone explain the likely causes for this to occur?

regards

Defender

Thanks gents,

The window blinds are only pulled down at night when the 'van is in use and very occasionally during the day to prevent strong sunlight entering the 'van*. (* Probably no more than half a dozen times in 5 years)

The problem with drilling a small hole is that the cracking is occurring on the inside of the outer pane, There is no visible nor obvious damage on the outside of the outer pane, so this would limit the ability to repair the cracking due to the minimal gap that I would have to work within.

Not very encouraging to read that you have had problems with 3 windows  Is your 'van subject to a particular aspect when not being used ie south-facing, sun in the morning/late evening etc.

Defender