Gutter Angles
A gutter angle turns a run around a corner of the building, at 90 degrees for a square corner or 120 and 135 for a bay or splayed wall. Guttering angle joints cover 112mm to 170mm across half round, ogee and square profiles, internal and external. Joins with gutter fittings.
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Choosing Gutter Angles
Frequently Asked Questions
Match three things: the profile shape, the width across the top of the gutter, and the manufacturer's system. Two 112mm half round gutters from different makers can have seals that will not grip each other. If you are repairing rather than replacing, take an offcut or a clear photo of an existing union before ordering.
Not reliably. Profiles that look alike often differ by a few millimetres across the seal, so a union from one system may not grip, or may leak, on another. Match the profile and size already on the building. If a run is being replaced piecemeal, bring an offcut or a photo of the union before ordering.
Plastic moves with temperature — a long run can grow several millimetres between a frosty morning and a hot afternoon. Pushing every joint fully home leaves nowhere for that to go, so the run bows or pops a seal. Each union carries an insertion mark; stop at it rather than at the back of the socket.
Fascia brackets are normally fixed at 800mm to 1000mm centres, closer where snow load is likely, with a bracket within 150mm of every union, angle and outlet. Set a fall of roughly 1:600 towards the outlet, about 3mm per metre, so water runs off rather than standing in the bottom of the gutter.