Separate gutter stock and fitting schedules.
Which fittings can be inferred from straight stock joins and which must be supplied?
Use the matching calculator
Use this decision sequence
- List each separate measured straight run.
- Round each run to usable stock lengths.
- Count straight joins as stock lengths minus one for that run.
- Enter corners, outlets and end caps explicitly from the chosen layout.
Keep the quantities distinct
| Quantity or assumption | How to use it |
|---|---|
| Straight joins | Can be counted from the stock segmentation. |
| Corners and outlets | Come from the supplied layout. |
| Capacity and fall | Require information outside a purchase count. |
Worked comparison
For 7 m and 4 m runs with 3 m stock, purchases are 3 and 2 lengths. Their straight joins are 2 and 1, giving 5 stock lengths and 3 straight joiners before the supplied corner and outlet fittings.
Check before using the estimate
Do not infer downpipe capacity, fall or support spacing from run length.
All dimensions, product properties, prices and specifications in this example are illustrative arithmetic inputs. Use the values from your measured plan, selected product data sheet and supplier quote. This guide does not choose construction specifications or certify safety.
Calculation and scope checked 2026-10-04. Methods and scope.
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