I had a small puncture in my brolley and successfully repaired the hole. I used a simple adhesive kit for punctures in paddling pools/lilos (works when wet too). Just make sure that the site is thoroughly clean before applying a patch. Cost about £5 B & Q's! Clear adhesive waterproof Sellotape also works OK for tiny punctures- must be bone dry when applying though.
Burmarsh20, September 2016