Quick answer
Overflow can mean blockages, insufficient gutter capacity, incorrect fall or downpipes that cannot drain fast enough. Diagnosis starts at the outlet and hopper, not only the visible channel.
What you need to know
Partial blockages restrict flow until intense rain overwhelms the system.
Undersized gutters on large roof areas may need upgrading rather than more clearing.
We inspect fall and joint leaks during visits to identify root causes.
How David White can help
We assess each property individually before recommending work. For why do gutters overflow in heavy rain, that means checking access, roof or gutter condition, and any risks to neighbouring properties.
You can send your postcode and photos for a remote quote in many cases. If the job needs a closer look, we will say so upfront rather than guessing on site.
What to expect on the day
Our team works safely from ladders, towers or MEWPs depending on the building. We protect gardens, paths and driveways where moss or debris may fall, and we clear up when the job is done.
We will confirm timing, access and parking before we arrive so the visit runs smoothly for you and your neighbours.
Next steps
Call 0330 056 7751 or use the contact form with your postcode, photos and a short description of the issue. We cover roof cleaning and gutter work across London, Surrey, Sussex and Kent.