I discovered last week that the two small front windows on my Bailey Senator had separated and needed to be resealed. After researching how to do it on the web I bought some sealant from E-Bay and went to mend them. After taking them off I squeezed the sealant between the panels with the aid of a sealant gun and held them together with clamps. After a few hours they were dry enough to replace them. They wont be perfectly sealed double glazed units but will be ok and a lot cheaper than new ones.