vauxhall combo van 1.3 2005 model?

I had the same with the drivers side floor full of water and traced it to the seal on the brake pedal mounting plate
Removed the master cylinder and servo, clean out the seal which had gone brittle then using mastic sealed the whole area, also the bulk head drain flap was jammed and full of leaves. put it all back together and water tested no problems - 6 months since still dry

Mark
September 2011

its most likley to be the heater matrix

marc
August 2011

check roof aerial is sealed at base,check drains at bulkhead aren`t blocked

cdc
August 2011