Why can water return after gutter cleaning?
New debris is one possibility, but a fitting, pipe or another defect may also be involved. Describe the pattern and known earlier work.
Should I book exactly the same work again?
Have the current condition considered first. The appropriate scope may differ from the earlier clearance.
What if I do not have the previous invoice?
Share the details you know and say what is uncertain. A complete record is helpful but should not be invented.
Do you clear the pipe as well as the gutter?
Downpipe clearance is available by agreement. Make sure the particular pipe work is identified in the scope.
Can clearance fix a leaking joint?
It can remove a suitable obstruction, but it does not repair a failed joint. Those are different tasks.
How often should a repeatedly affected gutter be checked?
Consider the material, earlier findings and current symptoms. A repeating fault may need separate attention rather than simply a shorter cleaning interval.
Will a photo of the wet wall be enough?
Include the gutter, outlet and working space too, where visible safely. A wall mark alone does not establish the water source.