Power washing starts with the surface

Identify what needs cleaning

Begin by naming the areas and materials you want reviewed: a driveway, walkway, patio, siding or another exterior surface. Include wide photographs and close views of the marks you want addressed. If you know the material’s brand or have care instructions, send them. Describe whether the issue is ordinary dirt, a recurring stain or a change in the surface itself. A photograph can help start the conversation, but it does not guarantee that every mark can be removed without affecting the material.

Do not treat all surfaces the same

The appropriate cleaning method depends on the material and its condition. Manufacturer guidance can differ even within a product category. For example, Trex distinguishes cleaning recommendations for its newer and early-generation decking, and does not recommend pressure washing the latter. That is a reason to identify the actual product before choosing a method, not to apply one rule to every deck. Ask what can reasonably be expected for the surface at your property and flag existing damage before work is quoted.

Show access and the surrounding area

Include entrances, nearby plants, movable furniture and anything that cannot be relocated easily. Mention loose surfaces, damaged joints, peeling coatings or openings that need review. Tell the estimator about available water access and whether the area is shared with tenants, customers or neighbors. Discuss how people will move around the work and when access can be restricted. These details help define the job beyond the size of the surface and avoid assumptions about what will be available on the day.

Agree on the boundaries and expected result

Specify exactly which sections are included and what is outside the request. A driveway cleaning does not automatically include the adjacent walkway, and cleaning is not the same as repairing damage or renewing a finish. Ask how difficult stains and uncertain materials will be assessed before the full area is treated.

• Material and product information when known.
• Approximate area and clear photos.
• Existing damage or previous treatments.
• Water access and surrounding items.
• Access restrictions and preferred timeframe.

Keep aftercare specific

After the work, ask when the area can be used and whether the chosen method has any relevant care instructions. Follow guidance for the actual surface rather than a generic online pressure setting or chemical recipe.