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Base Assessment

Tarmac to Resin Driveway Conversion in Cambridge

A worn tarmac drive assessed, prepared, and finished with a permeable resin bound surface, without unnecessary dig-out.

  • Site Assessment First
  • Itemised Quotes
  • Overlay or Dig-Out
A modern grey bungalow with a new resin driveway, landscaped front garden, and detached garage on a sunny day.

What Goes Wrong

Why some resin driveways fail within months

The finish is only as good as the decision made about the base beneath it.

Skipped Base Check

Laying resin over tarmac without a soundness check means hidden movement or cracking goes undetected until the new surface lifts.

Surface Soundness Check

A base stability inspection confirms whether the tarmac is structurally sound before any overlay work is specified.

Drainage Ignored

A tarmac base with poor falls or standing water will cause the resin layer above it to puddle, regardless of how well the resin is laid.

Drainage Assessment

Falls and water handling are checked at the same inspection; drainage channels are specified and quoted before work starts.

Cracks Covered Over

Surface cracks that run to the sub-base cannot be hidden by an overlay, they reflect through the resin finish within one seasonal cycle.

Crack Repair & Levelling

Cracks are filled, levelled, and assessed for depth before a primer coat and resin bound aggregate layer are applied.

One-Price Quoting

A single combined price makes it impossible to see whether excavation, drainage, or sub-base work has been included or quietly dropped.

Separate Line Items

Excavation, MOT Type 1 sub-base, drainage, and resin finish are each quoted as a separate line so the full scope is visible.

Common problems, answered

Scope of Work

What a tarmac to resin conversion covers

The work ranges from a straightforward overlay to full excavation and sub-base replacement, depending on what the base inspection finds.

Edging Installation

Edge restraints fitted to contain the resin bound layer.

Primer Coat

Applied to the prepared tarmac surface before resin laying.

SuDS Compliance Check

Permeable finish assessed against front driveway rules.

Base Assessment

Can your tarmac stay, or does it need to come up?

The condition of the existing tarmac base is the single most important factor in deciding whether a resin overlay is viable or whether full removal is the correct route.

Request a Survey

Older Cambridge homes often have tarmac drives that look worn on the surface but remain structurally stable underneath. Where the tarmac is sound, no deep cracking, no movement, no drainage failure, a resin bound overlay is a practical option. The surface is cleaned, cracks are filled and levelled, and a primer coat is applied before the resin bound aggregate layer is trowelled on. The result is a permeable, UV-stable finish without the cost of a full dig-out.

Where the tarmac has failed, an overlay will not hold. Cambridge’s clay-heavy ground can cause tarmac bases to shift seasonally, opening cracks that run through to the sub-base. Laying resin over a moving base produces a surface that lifts and cracks within months. The site assessment identifies whether faults are surface-level, repairable before overlaying, or structural, requiring excavation and a new MOT Type 1 sub-base.

Drainage is assessed as part of the same inspection. A tarmac base that holds water or lacks adequate falls will cause the resin surface above it to puddle, regardless of how well the resin layer itself is laid. Drainage channels are specified and quoted at this stage. Each element, crack repair, drainage, primer, and resin finish, is listed as a separate line item so the full scope is clear before work starts.

Why Choose Us

Why Cambridge Resin Bound for a tarmac conversion?

The conversion decision is made on site, not assumed in advance, and every cost is visible before work begins.

Assessment Before Any Quote

A local resin specialist visits the site to inspect the base before a price is given.

Overlay or Dig-Out, Decided on Evidence

The base inspection result determines the route; no default assumption is made either way.

Itemised Quotation

Excavation, sub-base, drainage, and resin finish each appear as separate line items on the quote.

Drainage Specified at Survey Stage

Falls and water handling are checked and any drainage channels are costed before work is agreed.

Vetted Local Partners

We connect customers with vetted independent local resin specialists who know Cambridge ground conditions.

A completed resin driveways job at a house
A finished resin driveways project

The Process

From first contact to finished driveway

Request a Survey

  1. 01

    Describe Your Drive

    Tell us the size, what is down there now, and whether you have noticed any cracks or standing water.

  2. 02

    Book a Base Survey

    A local resin specialist visits to inspect the tarmac, check drainage falls, and confirm the correct route.

  3. 03

    Approve the Itemised Quote

    Each element, repair, drainage, sub-base if needed, and resin finish, is listed separately before work starts.

Pricing Estimates

Typical Tarmac To Resin Driveway Conversion Prices

JobTypical costBasis
Small conversion£4,500-£7,000small drive
Standard conversion£7,000-£13,000typical drive
Large conversion£13,000-£20,000larger drive
These prices are estimates and often vary with the condition, size and scope of each job. Message or call us for a free, no-obligation quote.
See all prices

Common Questions

Questions about tarmac to resin conversion

  • Can resin be laid over my existing tarmac?

    Yes, resin bound surfacing can be laid directly over tarmac, but only when the existing surface is structurally sound. Loose, cracked, or sunken tarmac will cause the resin layer to fail. A site assessment confirms whether your base qualifies for an overlay or needs work first.

  • Is my tarmac in good enough condition to go over with resin?

    The tarmac needs to be firm, well-bonded, and free from significant cracking or movement. Surface scuffs and minor wear are usually acceptable; soft spots, heaving, or widespread cracking are not. A local resin specialist will assess the base before any quote is given.

  • Do I need the whole driveway dug up first?

    Not always. Where the tarmac base is stable and drains adequately, a resin overlay avoids full excavation. If the base has failed, drainage is poor, or there is significant movement, excavation becomes necessary. The site assessment determines which route applies to your driveway.

  • Will a resin overlay fix drainage problems?

    No. Resin bound surfacing is permeable, so water passes through the resin layer itself, but if the tarmac or sub-base beneath drains poorly, water will still pond. Drainage issues must be resolved at base level before the resin goes down, not covered over.

  • How much repair work does the old tarmac need before resin can go on?

    It depends on the condition found at assessment. Minor surface defects are filled and primed. Larger failed areas are cut out and patched with fresh material before the resin is applied. Widespread failure means full excavation and a new sub-base, which is quoted separately.

  • Will the resin surface hold up if the base underneath is only slightly worn?

    Light surface wear on otherwise solid tarmac is generally acceptable for an overlay. The base must still be firmly bonded and free from movement. Slightly worn but structurally sound tarmac is one of the better candidates for a direct resin conversion.

  • Is a quick overlay enough, or does the base need proper repair first?

    A quick overlay is only appropriate when the base is genuinely sound. Applying resin over a failing base shortens the life of the surface significantly and leads to cracking or delamination. Proper base repair costs more upfront but avoids early remedial work. Learn more about resin overlay options

  • How much will a tarmac to resin conversion cost to quote for?

    Most tarmac to resin conversions in Cambridge come in at £4,500-£7,000, varying with driveway size, base condition, and drainage requirements. Excavation, sub-base, drainage, and resin finish are quoted as separate line items so you can see exactly where the cost sits.

More questions about Tarmac to Resin Driveway Conversion?

Tell Us About Your Driveway

Describe the area, what is down there now, and how it drains. We’ll arrange a local resin specialist to assess the base and quote every line item separately.

Request a Survey