The short answer
Include close-up photographs of the joints and any loose or cracked paving with your enquiry. Ask how the provider will protect the existing installation and whether repairs or finishing work are excluded.
Show the condition before cleaning
Take a wide view of the patio and photographs of representative joints. Point out gaps, crumbling material, uneven slabs or previous patch repairs. There is no need to prise anything out to demonstrate the problem. Recording the condition helps distinguish an existing defect from a question about the finished clean.
Find the installation details
If available, share the paving brand and material together with information about the jointing system. Manufacturer aftercare should guide the proposal. Marshalls publishes a patio and driveway aftercare resource for its installations; use the applicable instructions for your own product rather than assuming all paving is identical.
Define the area
Include paths, steps and small sections around planting if you want them cleaned. Give approximate dimensions and show the access route. Explain which furniture can be moved and whether large planters will stay in place. The quote should make clear whether moving these items is included.
Discuss the finish
Ask whether the agreed method may reveal existing staining, uneven weathering or joint defects. If finishing work or repairs are needed, request a separate description and price. Do not assume a standard clean includes complete repointing, sealing or replacing slabs.
Keep the aftercare instructions
Ask when the area can be used again and whether there are any restrictions connected with the chosen treatment or finishing work. Where a return visit is required, confirm its purpose and whether it is included in the original price.
Sources & further reading
Sources checked 2026-09-13. Statistics retain their original reference year.