Planning a block paving sealing job in Welwyn Garden City
Welwyn Garden City is a sizeable town with a mix of semis, terraces and newer estates, and many drives here were first laid decades ago.
Flat ground across much of the East means falls have to be built in carefully so water does not sit on the drive.
How much does a block paving sealing job cost in Welwyn Garden City?
Guide price in Welwyn Garden City: £5.50–£16 per m² including VAT, which puts a 50 m² drive at about £265–£790. These are East of England guide figures; the survey confirms the real price before you commit.
| Item | Guide price inc VAT |
|---|---|
| Sealing only | £5.50–£16 per m² |
| Jet wash clean with a rotary cleaner | £2.50–£5.50 per m² |
| Clean and re-sand | £5.50–£11 per m² |
| Clean, re-sand and seal | £8.50–£20 per m² |
Guide figures for the East of England, checked 9 November 2026. See all prices or use the guide price tool.
What is included?
Sealing block paving means applying a clear liquid sealer to clean, dry paving. A good sealer soaks into the blocks and the jointing sand, binding the sand so it does not wash out, reducing staining and making the surface easier to keep clean. Some sealers also deepen the colour or leave a light sheen.
- Edges, walls and doors protected
- Sealer applied evenly by roller or low-pressure sprayer
- Drying time and a date when cars can return
- Second coat where the product requires it
- Check that the paving is clean, re-sanded and dry
What we look at first in Welwyn Garden City
- Type of block and its age
- Shade and drainage, which affect regrowth
- Whether the paving is permeable (no sand, no sealing with the wrong product)
- Walls, doors and planting to protect
- Which sealer finish suits a slope or patio
What happens next
Quick details
Your postcode and the job. It takes a minute.
On-site check
Measurements, levels against the damp-proof course, ground and drainage.
Itemised quote
Fixed once the specification is agreed, with no vague extras.
Laid and finished
Compacted, jointed and handed back clean.
Why choose Block Paving Contractors
Repair before replace
If your drive can be fixed or re-laid, we will say so.
Itemised quotes
Break-out, waste, edging, drainage and covers are separate lines you can see.
Clean finish
The site is swept, the joints are filled and you are shown how to look after the paving.
Honest timescales
We tell you how long the job takes and what can delay it, such as approvals and weather.
Sealing in Welwyn Garden City: questions
How much does a block paving sealing job cost in Welwyn Garden City?
Guide price for Welwyn Garden City: £5.50–£16 per m² including VAT, with a minimum charge for small areas.
Do you cover Hatfield, Hertford and St Albans?
Yes. We cover Welwyn Garden City and the places around it, including Hatfield, Hertford and St Albans, and the rest of Hertfordshire.
Can you seal my drive straight after cleaning?
Only once it is completely dry and re-sanded. Sealing damp paving traps moisture and can leave a white bloom.
Will cleaning damage my block paving?
Not when it is done with a rotary cleaner at medium pressure and the joints are re-sanded afterwards. High-pressure lances held close are what cause damage.
Sealing near Welwyn Garden City
Nearby towns we cover for sealing, and sealing across Hertfordshire:
- Sealing in Hatfield
- Sealing in Hertford
- Sealing in St Albans
- Sealing in Harpenden
- Sealing in Stevenage
- Sealing in Potters Bar
