The method should follow the assessment
A method name is not enough to show that a roof-cleaning proposal is suitable. Start with the roof covering, its condition, any manufacturer guidance, existing defects and the access plan. The contractor should be able to explain the choices and limits for your property.
Some roofs do not need cleaning. Aesthetic preferences, loose debris and drainage concerns need different responses. A leaking or deteriorated roof may need roofing advice before anyone discusses a cleaning process.
Moss removal is a physical task
Removing substantial growth is different from applying a product to the surface. Ask how loose material will be collected, which tools are proposed and how the tiles or slates will be protected. Hand work is not automatically harmless: an unsuitable tool, excessive force or unnecessary traffic can still cause damage.
Find out what happens around valleys, gutters, rooflights and solar equipment. These details should be part of the assessment, rather than treated as obstacles to work around on the day.
Washing and treatment are different decisions
Washing involves water; a treatment uses a product for a stated purpose. Terms such as soft washing and steam cleaning do not, by themselves, describe the complete process or establish suitability. Ask about the actual equipment, application and controls. A gentle-sounding label should not replace an explanation.
Marley advises against high-powered jet washing of its roof tiles and direct foot traffic on the covering. Manufacturer guidance for the specific roof matters. Ask the contractor to explain any proposed washing method in that context, rather than assuming that a process used elsewhere is suitable here.
Judge the proposal by the outcome and controls
A useful method explanation should cover:
- What will be removed immediately and what may change gradually.
- Which marks or weathering may remain.
- How access, nearby surfaces and runoff will be managed.
- What would cause the work to stop or be postponed.
- Which aftercare instructions you will receive.
For Wigan properties, contact Just Clean Roofs with the roof details and any concerns. We will discuss suitability before recommending work. A quotation should explain the proposed scope; it should not ask you to choose equipment without understanding the consequences.
View our roof-cleaning information for Wigan or explore the main roof-cleaning service.
Useful next steps
You may also find these guides useful: Clay or concrete roof tiles: what to establish before cleaning, Roof treatments: what results can you reasonably expect?.
