Concrete Surface Treatment: Sealing and Maintenance Costs

Concrete is one of the most widely used surfaces for UK driveways, patios, and paths — yet it is also one of the most frequently neglected. The UK's freeze-thaw cycles, high annual rainfall, and intermittent oil or chemical spills create a demanding environment that untreated concrete struggles to withstand over time. Whether you have a newly laid slab you want to protect or an ageing driveway showing surface scaling and staining, understanding your treatment options helps you make a proportionate investment.

Key points

• UK winters accelerate concrete surface damage through freeze-thaw cycling: water enters surface pores, freezes, expands, and causes spalling or scaling — the mechanism that penetrating silane/siloxane sealers are specifically engineered to resist.
• Under the Town and Country Planning (General Permitted Development) Order 2008, replacing or surfacing a front garden with an impermeable material covering more than 5 m² requires planning permission unless a permeable surface or drainage to a lawn or planted border is used.
• Professional application of penetrating (silane/siloxane) sealers typically costs £8–£18 per m²; acrylic or polyurethane surface sealers cost £6–£15 per m² applied professionally.
• For a typical residential driveway of 40–80 m², total professional sealing costs range from approximately £300 to £1,200 (Indicative UK costs, last reviewed 2026-05-30).
• Surface sealers generally require re-application every two to four years; penetrating sealers every five to eight years — intervals depend on traffic, UV exposure, and local weather conditions.

Which concrete sealer should you choose?

Which treatment for your situation?

• Choose a penetrating silane/siloxane sealer if your priority is long-term freeze-thaw and de-icing salt resistance with minimal change to surface appearance — the standard choice for plain grey driveways and paths.
• Choose an acrylic wet-look sealer if you want to enhance the colour of exposed aggregate, decorative, or newly coloured concrete and are prepared to re-seal every two to three years.
• Choose polyurethane if the surface receives regular vehicle traffic and you want the durability of a surface film without the re-sealing frequency that acrylic products require.
• Choose epoxy if the area is an interior garage or workshop floor where UV yellowing is not a concern.
• Ask a specialist contractor if the concrete shows active cracking, significant spalling, oil contamination, or efflorescence — these require remediation before any sealer can bond effectively.
• Check with your local planning authority if you are proposing to extend or resurface a front driveway to confirm whether the work triggers permitted development limits on impermeable surfaces.

Concrete maintenance costs and schedule

Indicative UK costs, last reviewed 2026-05-30. Regional variation, surface condition, and access affect all figures. Obtain at least three quotes.

Homeowner checklist before concrete treatment

• Inspect the surface for active cracking, spalling, or hollow-sounding areas (tap with a rubber mallet to identify delamination).
  
• Check for oil staining, efflorescence (white salt deposits), or algae and moss growth — each requires a specific pre-treatment before sealing.
  
• Confirm the concrete has fully cured if newly laid — minimum 28 days, with 90 days preferred before applying a surface sealer.
  
• Check whether resurfacing a front driveway triggers planning permission obligations regarding permeable versus impermeable surfaces.
  
• Obtain at least three quotes and confirm what surface preparation is included in each price.
  
• Verify that the chosen sealer is compatible with your concrete finish type (exposed aggregate, brushed, printed, or plain).
  
• Plan work during a settled dry weather window — most sealers require 24–48 hours of dry conditions before and after application.
  

When to get professional help

Re-sealing a plain concrete surface is within the capability of a prepared homeowner when the surface is in good condition. Professional application is advisable when:

• The surface is decorative, coloured, or stamped concrete where uneven application would be visually prominent.
• Active cracking, significant spalling, or structural concerns are present — a contractor should assess whether repair or resurfacing is needed before any sealing work.
• You are applying a polyurethane or epoxy system where the concrete's moisture content must be tested and the substrate mechanically prepared.
• The area is large enough that consistent application without lap marks requires spray equipment.

Signs that more than cosmetic treatment is needed:

• Cracks wider than 3 mm or cracks that reappear promptly after filling.
• Large areas of surface scaling, delamination, or disaggregation of aggregate.
• Settlement causing uneven slabs, trip hazards, or poor drainage falls.
• Standing water indicating that the original drainage falls have been lost.

How Housey can help

Housey connects you with vetted driveway installers and groundworkers who can carry out concrete cleaning, sealing, crack repair, and full resurfacing across the UK. Describe your project on Housey and receive comparable quotes from local contractors experienced in your surface type and condition.

Frequently asked questions

How long does concrete sealer last in the UK?

Penetrating sealers typically last five to ten years in UK conditions, while acrylic surface sealers last two to four years before re-application is needed. Polyurethane sealers perform for five to eight years under normal vehicle traffic. UV exposure, heavy use, and freeze-thaw cycles all shorten effective lifespan. Annual inspection of the surface helps identify when re-sealing is due before the concrete begins to degrade.

Do I need planning permission to resurface a concrete driveway?

Sealing an existing concrete drive generally does not require planning permission. However, if you are replacing or extending a front garden surface with an impermeable material covering more than 5 m², planning permission is required under the Town and Country Planning (General Permitted Development) Order 2008 unless the surface is permeable or run-off is directed to a lawn or border. Check with your local planning authority if in doubt.

Can you seal cracked concrete, or does it need repairing first?

Cracks should be repaired before sealing. Applying sealer over open cracks does not bridge or bond them structurally, and many products simply highlight cracks once cured. Use a flexible polyurethane or epoxy filler rated for external use, allow it to cure fully, then clean and apply your chosen sealer. Cracks wider than 5 mm or showing signs of ongoing movement warrant professional assessment before any surface treatment.

What is the difference between a penetrating sealer and a surface sealer?

A penetrating sealer is absorbed into the concrete substrate where it chemically bonds to block water and salt ingress without forming a visible film — appearance remains largely unchanged. A surface sealer sits as a film on top of the concrete, providing a gloss or satin finish and enhanced colour, but it can peel or wear away if the surface is contaminated or damp when the product is applied.

Is concrete sealing worth doing?

For most UK driveways and external concrete surfaces, periodic sealing is a cost-effective way to extend surface life and reduce maintenance. The relatively modest cost of re-sealing every three to five years is considerably less than full resurfacing or replacement. The case is strongest in areas exposed to frequent freeze-thaw cycling, de-icing salt from nearby roads, or sustained heavy vehicle traffic.

Sources and further reading

• Planning permission: hard surfaces in gardens — GOV.UK
• Sustainable drainage systems — GOV.UK
• BS 8204: Screeds, bases and in-situ floorings — BSI
• The Concrete Society — The Concrete Society