The description of "Event" fabric is rather vague but it suggests the proofing method is by spray coating of polyurethane. This can leave "holes" where proofing is inadequate, thus letting through moisture - either in the form of water or water vapour. "Goretex" is proofed by applying a fine sheet of polyurethane to the fabric, followed by a second layer of fabric - thus forming a sandwich (transfer coated). Years ago hospital mattress covers were made from spray coated fabric that allowed any liquid you care to mention soaking into the polythene foam core and seeping back onto the next luckless patient occupying the bed! At the time (70s and 80s) there were only three companies producing proofed fabric in Britain and we didn't have to investigate Chinese methods.
Thank you, Annette, for your comment. Jon
Apologies to Goretex - I should have said PTFE not Polyurethane - Annette
Goretex trousers are very good- Berghaus Paclites have are a popular choice. Another option that I own are the Craghoppers Steffan- very comfortable, warm and they also come with a lifetime guarantee. They are a great trouser- I've had mine out on West Penwith, Cornwall lately, in weather not dissimilar to Ardnamurchan, and they've been great.
Billy - many thanks for the advice. I ordered new trousers this morning - Berghaus Paclites! Jon
Try re-proofing the trousers with DWR. Nikwax or Grangers are two popular brands. Hope this helps!
Thank you. I have bought a pair of Gortex trousers now but am also going to re-proof the Karrimor pair. Jon