faulty fitting of windscreen

Hope someone can give some advice. A short while ago our car would not start, it was towed to the garage and after testing I was told that the Control Unit in the dashboard had packed up due to water damage from a leaking windscreen.

The windscreen had been replaced about 16months ago by a well known company but presumably the glue used did not set properly in a small area at the base of the glass and water has been slowly seeping in.

I now not only have to replace the windscreen but the cost of the work and control unit will come to appx £2,000. My question is am I able to go back to the windscreen company and claim the repairs from them or would they only be liable for the windscreen but not the ensuing damage?

Any advice would be most appreciated !

Thanks for your reply. The garage have done 2 hose tests, the second one after the dash board had been removed and are very sure that the faulty seal on the windscreen is what is causing the ingress of water. As it is only a small area they think it quite feasible that the water has slowly seeped through. The area where it is coming through is on the passenger side and the control unit is on the driver side but as water finds its own route they beleive that is the reason it has taken this long as it was probably small amounts of water over a long period.

Having said that, we did notice a musty smell in the car but could never find where this was coming from, checked all door seals and carpets etc and no dampness.

I am sending a copy of the report and quote to the company and hope I dont have a battle, would this come under the sale of goods act ?