Natural Resources Wales
Natural Resources Wales guidance says only clean water should enter surface-water drains.
Read the source →Wales, Wales
Comparing roof cleaning quotes in Swansea starts with evidence, not an unsupported local average. Show roof covering, pitch, visible growth, fragility and safe access, then ask every provider to state whether the request covers removal, treatment, gutter clearance or repair work, with each part itemised.

The Swansea brief
Focus on roof covering, pitch, visible growth, fragility and safe access. The key comparison is whether the request covers removal, treatment, gutter clearance or repair work, with each part itemised.
Evidence before method
These sources support the planning questions on this page. They do not prove that a particular method suits an unseen property.
Natural Resources Wales guidance says only clean water should enter surface-water drains.
Read the source →HSE guidance says work at height should be planned and suitable equipment selected for the task.
Read the source →Questions for Swansea
It should identify the proposed method, access approach, protection, waste handling and any treatment. Repairs or guarantees should never be assumed from the cleaning price.
Washom does not publish an unsupported Swansea average. Give each provider the same photographs, measurements, condition and access notes, then compare what each total includes.
No. Submit the roof cleaning brief and Washom will check for suitable independent-provider options. Availability depends on the job and location.
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Your next step
Share photographs, surface condition and access once. Washom will check suitable independent-provider options for this job.