Hi, no you cannot do it upside down as it runs like solder, so it would be box out I am afraid.
Back in the office I have the details here now.
The product is called Alutight, the guys name is Bjorn Ivholt and his contact details are as follows:
email alutighteurope at Hotmail dot com ( modify as is obvious )
Tel +46 70 6276572
He is a lovely chap and a pleasure to deal with. Not many of these type of cure all ( snake oil ) products that I trust, but this one actually does work. Worth watching his demo when he comes over for a show as there are many things that can be done with this which are most pertinent to what we do.