Who this guide is for
- Homeowners paving a driveway, path or hard area
- People concerned about sinking, cracking or pooling
- Anyone comparing paving contractors and materials
- Owners who want paving that lasts
Probe sub-base depth and preparation
The sub-base carries the load, so its depth and quality decide whether paving holds up under footfall or vehicles. Ask how the contractor sizes the sub-base for the use and the ground.
A thin sub-base under a driveway is a recipe for failure.
- Ask how the sub-base is sized
- Match depth to footfall or vehicle use
- Avoid surface-only quotes
- Discuss preparation for your ground
Confirm drainage falls
Paved surfaces must fall so water runs off rather than pooling, and the water has to go somewhere acceptable. Ask how they set the falls and where runoff is directed.
Confirm runoff does not flood neighbours or the public way.
- Ask how falls are set
- Confirm where runoff goes
- Avoid directing water at buildings
- Respect neighbours and local rules
Judge laying and jointing
Consistent gaps, clean cuts and neat jointing mark a careful paver. Look at past work for how paving is laid and finished, especially around edges, manholes and curves.
Confirm experience with your paving type.
Check edge restraint
Without firm edges, paving spreads and breaks down at the sides over time. Ask how the contractor restrains the edges and details transitions to other surfaces.
Edge restraint is where many paved surfaces fail first.
- Ask how edges are restrained
- Discuss transitions to other surfaces
- Check detailing around obstacles
- Confirm edges suit the use
Brief and compare on the same scope
Give each contractor the same brief and confirm what is included — sub-base, drainage, paving, edging — so quotes compare. Ask what could change once they excavate.
Confirm insurance and relevant experience.
Hiring checklist
- 1Decide the surface use and material
- 2Ask how the sub-base is sized
- 3Match depth to footfall or vehicle use
- 4Ask how drainage falls are set
- 5Confirm where runoff goes
- 6View past work for jointing and cuts
- 7Ask how edges are restrained
- 8Give each contractor the same brief
- 9Ask what could change once they excavate
- 10Confirm insurance and relevant experience
Common mistakes to avoid
- Accepting a surface-only quote with no sub-base detail
- Sizing the sub-base too thin for the use
- Ignoring where runoff actually goes
- Overlooking edge restraint and transitions
- Comparing quotes that differ on preparation and drainage
- Skipping insurance and experience checks
When to involve a professional
- Treat paving drainage and runoff as work to plan carefully and respectfully of neighbours
- Confirm the sub-base suits the use and ground
- Ask to see comparable paving that has lasted
- Ask to see relevant insurance for the work
- Remember drainage and surface-water rules vary by location and project
Frequently asked questions
Questions readers ask about this topic
Why does sub-base depth matter?
The sub-base carries the load, so its depth and quality decide whether paving holds up under footfall or vehicles. A thin sub-base under a driveway is a recipe for failure, so ask how the contractor sizes it for your use and ground.
Where does the water go?
Paved surfaces must fall so water runs off rather than pooling, and runoff has to go somewhere acceptable. Confirm where it is directed and that it does not flood neighbours or the public way, since rules vary by location and project.
How do I judge laying quality?
Look at past work for consistent gaps, clean cuts and neat jointing, especially around edges, manholes and curves. Confirm the contractor has experience with your paving type.
Why do paved surfaces fail at the edges?
Without firm edge restraint, paving spreads and breaks down at the sides over time. Ask how the contractor restrains edges and details transitions, since edges are where many surfaces fail first.
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