Should I Seal My Driveway After Cleaning?
You've just had your driveway professionally cleaned and it looks fantastic. Now someone mentions sealing – but is it worth the extra cost? This guide explains what driveway sealing does, the different types available, and helps you decide if it's right for your property.
What Does Driveway Sealer Do?
Driveway sealer is a protective coating that's applied after cleaning. It creates a barrier on the surface that:
- Prevents water penetrating into the paving
- Stops algae and moss taking hold as easily
- Locks sand into block paving joints
- Makes future cleaning easier
- Protects against oil and other stains
- Can enhance the colour of your paving
Pros and Cons of Sealing
✓ Advantages
- Extends time between cleans (2-5 years vs 1-2)
- Prevents weed growth in joints
- Protects against oil stains
- Easier to clean in future
- Stabilises sand in joints
- Enhances appearance
- Protects against frost damage
✗ Disadvantages
- Additional cost upfront
- Needs reapplying every 3-5 years
- Some change the surface appearance
- Can make surface slippery if wrong type used
- Must be applied in dry conditions
- Not suitable for all paving types
Types of Driveway Sealer
1. Acrylic Sealers (Wet Look)
These give a glossy, "wet look" finish that enhances colours and makes the paving look freshly rained on.
- Best for: Block paving, decorative concrete
- Finish: High gloss, colour-enhancing
- Lifespan: 2-3 years
- Note: Can be slippery when wet; may need anti-slip additive
2. Penetrating/Impregnating Sealers
These soak into the surface rather than sitting on top, providing invisible protection.
- Best for: Natural stone, block paving where natural look is preferred
- Finish: Natural, matte (no visible change)
- Lifespan: 3-5 years
- Note: Won't enhance colour but won't change appearance either
3. Polyurethane Sealers
Heavy-duty sealers that form a tough protective film.
- Best for: High-traffic areas, commercial driveways
- Finish: Variable (matte to gloss)
- Lifespan: 3-5 years
- Note: Most durable but also most expensive
4. Sand-Stabilising Sealers
Specifically designed for block paving, these bind the jointing sand.
- Best for: Block paving with weed problems
- Finish: Usually matte/natural
- Lifespan: 3-5 years
- Note: Primary benefit is weed prevention
Sealing Costs
| Driveway Size | Sealing Cost (approx) |
|---|---|
| Small (up to 20m²) | £60 - £120 |
| Medium (20-40m²) | £120 - £200 |
| Large (40-60m²) | £200 - £300 |
| Extra Large (60m²+) | £300+ |
Most professionals charge £3-6 per m² for sealing, depending on the product used and size of the area. Sealing is usually cheaper when done alongside cleaning as the setup is already done.
💰 Is It Worth the Cost?
Consider this: if sealing extends your cleaning interval from 2 years to 4 years, you're saving on one professional clean (£150-250) while spending perhaps £150-200 on sealer. You break even while enjoying a better-looking, better-protected driveway. If you have persistent weed problems, the labour savings alone from not weeding make sealing worthwhile.
When Sealing Makes Sense
Sealing is particularly worthwhile if:
- You have block paving – Sand stabilisation prevents weeds and ant damage
- Weeds are a constant battle – Sealed joints dramatically reduce weed growth
- Your driveway gets oily – Sealer protects against vehicle drips
- You want to extend time between cleans – Sealed surfaces stay cleaner longer
- Moss/algae returns quickly – Sealer makes it harder to take hold
- You're selling your home – A sealed driveway looks better for longer
When Sealing Might Not Be Needed
You might skip sealing if:
- Your driveway is already in good condition – Some surfaces stay clean naturally
- It's mainly in direct sunlight – Sun-baked driveways resist algae anyway
- You have tarmac – Tarmac doesn't need sealing (different products exist)
- Budget is very tight – Cleaning alone still transforms appearance
- You plan to replace the driveway soon – No point protecting what's being removed
Important Considerations
Surface Must Be Clean and Dry
Sealer should only be applied to a clean, dry surface. If applied over dirt or damp, it won't bond properly and can peel or turn cloudy. This is why sealing works best immediately after professional cleaning, with 24-48 hours of dry weather.
Quality Matters
Cheap sealers may only last a year and can cause problems. Professional-grade products cost more but perform significantly better and last longer.
Application Technique
Poor application leads to patchy results, pooling, and premature failure. This is one job where professional application usually delivers noticeably better results than DIY.
Want to Discuss Sealing Options?
Hulkzilla offers professional driveway sealing across Somerset. We'll recommend the right product for your surface and give you an honest assessment of whether sealing makes sense for your situation.
Call 07725 542334 Get a Free QuoteSummary
Sealing your driveway after cleaning is an optional but often worthwhile investment. It extends the time between cleans, prevents weeds, protects against stains, and keeps your driveway looking better for longer. The best candidates for sealing are block paving driveways with weed problems, areas prone to oil drips, and homeowners who want maximum longevity from their clean. While there's an upfront cost, many homeowners find sealing pays for itself through reduced maintenance over time.