Use the effective roof area, roof pitch, rainfall and number of outlets to check capacity. Large or complex roofs may need a higher-capacity profile or extra downpipes.
Channels, Downpipes and Fittings for Stormwater Control
Guttering collects water from the eaves and carries it to downpipes before it can saturate walls or foundations. MacBlair stocks rainwater components for roof drainage, including the channels and connecting fittings required around corners, outlets and changes in direction.
Match every fitting to the same gutter profile and size. Roof area, pitch and local rainfall influence capacity, while outlet position controls the falls along each run. Set brackets to the manufacturer's spacing and keep unions clear of fixed brackets so the system can move with temperature.
Align the gutter with the roof covering and eaves detail, then connect downpipes to an approved drain or water collection point. Coordinate supports with fascia and soffit boards. The wider roofing range covers the coverings above, while underlay at the eaves should discharge safely into the rainwater path.
Guttering FAQ's
Follow the system manufacturer's stated fall and bracket spacing. The run should drain to the outlet without visible backfall or sagging.
Only with a purpose-made adaptor approved for both systems. Similar-looking profiles often have different seals and dimensions.
Common causes include dirty or displaced seals, poor alignment, over-insertion, loose clips or blocked outlets. Clean and inspect before replacing parts.
Connect it to the approved surface-water system, soakaway or rainwater storage arrangement. Do not direct water onto foundations, paths or neighbouring property.