68mm Downpipe
Downpipe 68mm is the standard round section on most house roofs, taking the flow from half round and deep flow gutters. Lengths run 2.5m, 4m and 5.5m with offset bends, branches, shoes and clips, and 68mm guttering outlets drop straight into it. Pair with half round guttering.
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Aquaflow 68mm Cast Iron Effect Round Downpipe 5.5mLength: 5.5m
£52.34Inc. VAT
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Aquaflow 68mm Cast Iron Effect Round Downpipe Offset Bend 92.5°
£21.64Inc. VAT
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Aquaflow 68mm Square Cast Iron Effect Downpipe Offset Bend 92.5°
£23.81Inc. VAT
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Aquaflow Cast Iron Effect 66mm Square/Round 68mm Downpipe Adaptor
£5.00Inc. VAT
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Choosing 68mm Downpipe
Frequently Asked Questions
68mm round is the standard partner for half round and deep flow guttering, and 66mm square goes with square and ogee profiles. Cast iron effect systems use a narrower 65mm square to keep the period proportions. The pipe has to match the outlet on the gutter, so settle the gutter profile first.
Fix a clip within 150mm of every socket joint, then at roughly 1.8m to 2m centres down the run, with an extra clip either side of an offset bend. On a narrow passage or boundary wall, flush-fitting clips let the pipe sit tight against the brickwork.
It steps the pipe back to the wall where the gutter outlet sits proud of the brickwork on the eaves overhang. Two bends and a short length of pipe make the step. Offsets come at 92.5 and 112.5 degrees; the one you need depends on how far the eaves project, so measure before ordering.
Match the rest of the roofline rather than the wall. White suits white fascia and guttering on most housing, black disappears against a dark roofline or a cast iron effect scheme, and grey sits well with anthracite windows and modern render. Fittings and clips are stocked in the same finishes, so a run stays consistent.
Look at the front edge from the ground. A plain curve is half round, a flat face with a square shoulder is square, and a moulded, shaped front is ogee. Then measure across the top of the gutter: 112mm and 114mm are the common domestic sizes, with 125mm, 130mm and 170mm on deeper and commercial systems.