As far as I previously discovered, fish-pond type hose comes in various diameters but no where near 68mm. Bracket opening clamps between 10mm (approx 1/3") and 76mm (approx 3") - roof edges <10mm thick will need a bit of packing material e.

If you think that the UK is bad, try living in a country where it is a crime to criticise the unions, where every trade has a guild dedicated to preserving the status of "professionals" as untouchables whose word must be trusted implicitly, and where the entire social structure is set up to exclude outsiders. Coolant hoses for commercial vehicles sound a possibility, though no doubt expensive if they operate under pressure. I turned up with a neat plan for my sewage system, with appropriate measurements etc at my local place and at another with a requirement for the plastic trays used for underfloor heating. Hard surfaces on some plastic and metal sheds may benefit from anti-slip material to help the brackets grip.When I pointed out that a run of 60 metres just meant that I wanted 10x6 metre lengths of tube I got more intake of breath and more insults. Caravan sink pipe looked promising, but it's on the small side - I'll have to lash up some reducer arrangement.

Please note that our guttering kits are long items - they are sent in 6ft long boxes and therefore specific courier services are required. All I want to do is fix some flexible hose to the 68mm diameter gutter down-pipe exit with a hose clip and manoeuvre the hose round bends and squeeze through gaps into the water butt. At both I was treated with the sharp intake of breath, and at the first a screaming of abuse that (a) they didn't want to deal with me and (b) the drawing was all wrong because I hadn't shown every single length of tube with separate measurements for each length.

A full VAT receipt will be provided with all goods inside the box or in a document wallet on the outside of the packaging. Slide the flexible downpipe on, nip up the clamp and start saving rainwater into the water butt of your choosing!

Leave a 10mm gap between the end of the pipe and the bottom of the pipe socket to allow for expansion.