How far apart should gutter brackets be?

Gutter brackets should be spaced at maximum 600mm centres for uPVC guttering and 900mm for cast iron. This ensures the gutter does not sag under the weight of water and debris.

How many gutter outlets do I need?

Typically one outlet per downpipe. Most houses need 2-4 downpipes depending on roof area. A single downpipe can serve up to about 50m² of roof area.

What fittings do I need for guttering?

You need brackets, outlets (for downpipes), union joints (to connect gutter lengths), corners (internal/external), and stop ends. This calculator works out all the fittings.

TradeCalculator.co.uk

Gutter Bracket Calculator — Brackets, Fittings & Guttering

Calculate gutter brackets, fittings and guttering lengths for your roof. Includes outlets, corners and union joints.

Total Gutter Run Length

Total length of all gutter runs

Number of Outlets

One per downpipe

Number of Corners

Internal and external corners

How We Calculate This

This calculator divides the total gutter run by the bracket spacing to determine bracket quantities, and by gutter length to determine how many lengths you need. Fittings are calculated based on the number of outlets, corners and joints.