I know the make of my greenhouse but wasn't prepared to pay £15 per stop end
& outlet.So this is what I did ,filled the end will clear silicone sealant
and smoothed it off flush with the greenhouse gutter,this being the
stopend.For the outlets I used white 20mm overflow pipe elbows heated them
up with a blowtorch till slightly malleable then pushed them into the
greenhouse end gutters, the bend will then set to the shape of the
greenhouse gutter obviously pointing down,then seal it in with clear sealant
again with a wet finger.I put overflow pipe into the bends then another bend
further down.Then drilled a hole in my greenhouse frame to return the rain
water pipe into two plastic 25 gallon cold water storage cisterns I
acquired.I need rain water in the greenhouse at ambient temp as I grow
orchids To make it look better I cut the top off the bends flush with the
top of the greenhouse gutter as mine protruded above the gutter.My
greenhouse gutter is about 15mm & the bends about 20 mm..This has work
really well,both my storage tanks have been full with no leaks.

--
Thanks Keith,England,UK.
"David Hill" wrote in message
...
Paul said ....... "So, any suggestions as to how I might add an end-stop
the
one end, and attach a hose/downpipe the other? ..."

Well easy to make a stop end, just hold a piece of wood against the end
then
draw the shape of the inside of the gutter onto it, cut out the shape and
fit it with silicone or mastic.

if you can drill an inch hole at the other end, do so and thread a half
inch
chain through the hole.The water will run down the chain and not splash
all
over the place.
You may need to close this end off as well..

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk