Slate roofing · A focused guide
What should be checked when water from a slate roof misses the gutter?
Published by Big Ben Roofing Ltd
Water missing the gutter needs an assessment of the roof edge and gutter arrangement, rather than an automatic decision to replace either one. Describe whether water runs behind the gutter, overshoots the front or escapes only at one point. The eaves covering, drainage route and gutter position may all be relevant. Ask which observation supports the proposed repair and whether the adjoining roof edge is included in the assessment.
Record the water path from shelter
If you can observe safely during rain, note the affected length and whether the problem begins near a valley or separate downpipe discharge. Otherwise share wall staining or older photographs. Do not lean out of windows to capture the edge. A broad view of the roof and gutter can be more informative than a close photograph of a single drip.
Clarify responsibility for the connection
A gutter adjustment and work to slates or supporting eaves details may have different scopes. Ask the quotation to identify what is retained, repositioned or replaced and how the components will connect. Where the gutter continues to another property, describe that arrangement before a change is proposed. Agree how the finished drainage route will be checked and any remaining limitation recorded.
Useful details to record
- Describe behind-gutter flow separately from water spilling over the front.
- Note whether the issue follows a valley or an upper discharge.
- Mention any gutter or roof work completed before the problem began.
- Ask which eaves and gutter components the proposed repair includes.
Use information already available from indoors or ground level. Do not climb onto the roof or disturb materials to complete this checklist.
Will a deeper gutter always stop water missing the roof edge?
No. Capacity is only one consideration. The position of the gutter and the way water reaches it also matter. Ask for the observed cause to be explained before selecting a different gutter profile or changing the roof edge.
Background reading
- SPAB: rainwater fittings
- CUPA PIZARRAS: natural slate design and fixing guide
- FloPlast: rainwater system technical questions
General guidance helps frame the questions. The cause, suitable materials and scope depend on inspection of the particular roof.
Related questions
Why does guttering overflow at only one corner?
Describe a concentrated corner overflow and assess its relationship to roof valleys, outlets and the adjoining gutter route.
Why should broken slates beside a roof valley be assessed together?
Understand the repair questions where cut slates meet a valley, including covering support, the lining and the adjoining water route.
Discuss what you have noticed
Include your postcode, the affected roof section and when the concern appears. The team will review the enquiry and confirm the next step, scope and availability.
Request a roofing assessment