- This question is important to understand the versatility of the service and whether it includes driveways, patios, decks, siding, roofs, or even fencing. 2. **How do you determine the appropriate pressure setting for different surfaces?

- This question is important to understand the versatility of the service and whether it includes driveways, patios, decks, siding, roofs, or even fencing. 2. **How do you determine the appropriate pressure setting for different surfaces?