"T Blake" wrote in message
...
We want to make a Cloche with hoops of bent-over plastic water pipe,
covered in Plastic sheeting; to end up like a minature Polytunnel for the
allotment.

We dont know where to get a large sheet of plastic from here in North West
London, so we are going to stick together 'cut-open' clear plastic bags.

What would be the simplest way to stick the bags together, and if glue is
the answer; what is the best type of glue to use please? Bearing in mind
we would probably have to use lots of it and it would have to be one
hundred percent waterproof. Thanks.


Plastic bags won't last two minutes.
It needs to be UV stabilised ploythene.
Polythene is joined with special clear tape for outdoor use.
"Visqueen" is a well known make. Lasts about 15 years.

Garden centre/nursery is your best bet.

Bit late now for cloches, the season is past. They have been taken off
now,
Using them now will cause overheating and drought conditions inside.
You have to have an arrangement so plants can be watered.
ie ability to lift the plastic or maybe soaker hose?