Guttering & Drainage
Steel guttering, downpipes, outlets and brackets to finish the roofing system properly. Sized by roof area, not by guesswork — tell us the m² and we will size it for you.
Not sure which one you need?
Send us a photo of the existing roof or your drawings and we'll tell you exactly what matches, then price it at trade.
Guttering & Drainage — common questions
What size gutter do I need?
It follows from the roof area draining into it and the pitch of the roof, not from the size of the building. A small domestic-scale extension is generally fine on a standard gutter; a large workshop or agricultural roof will overshoot one in heavy rain, which is the usual reason a gutter appears to "leak" when it is actually just full.
Give us the roof dimensions and how many outlets you can run, and we will size it.
What fall should a gutter have?
A common working figure is around 1:600 — roughly 5mm of fall for every 3m run — towards the outlet. Enough to keep it moving and self-cleaning, not so much that the gutter visibly runs downhill across the front of the building.
How far apart should the brackets be?
Around 1m as a general rule, and closer where snow is likely to slide off a metal roof, which is where most gutters actually fail. Always put a bracket close to each side of a joint and next to an outlet.
Do I need one downpipe or two?
Long runs generally want either an outlet at each end or a centre outlet with a fall both ways, rather than everything travelling to one corner. It shortens the distance water has to travel, keeps the gutter shallower, and gives you somewhere for the water to go if one outlet blocks with leaves.