Wrong level
Floor finish, thresholds, drainage and wall build-up depend on accurate slab levels.
Flat, durable and ready for what comes next
Concrete Slabs & Bases in Surrey
Concrete bases, oversites and slabs for extensions, garages, outbuildings, plant and external projects.
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Checkatrade reviews
Since 2012Checkatrade member
SurreyGuildford-based team
One teamGroundworks to finish
The direct answer
Concrete Slabs & Bases: what matters most?
A concrete slab performs through the full build-up: formation, sub-base, membranes, insulation where required, reinforcement, joints, levels and curing. We coordinate those layers with the structure it will support.
Our first survey focuses on the variables that change method, risk and price. The written scope then states the included work, important assumptions and the information or approvals still required.
Real A Jones project photographyTypical scope
What we can include
- Extension oversites and ground floors
- Garage and outbuilding bases
- Plant, shed and equipment slabs
- Excavation and compacted sub-base
- Membranes, reinforcement and formwork
- Concrete placement and finishing
Every site is different. The quotation—not a generic web list—defines the final package.
Devil in the detail
Four issues worth resolving before work starts.
Good planning makes risk visible while there is still time to change the method.
Poor support
Soft spots or inconsistent compaction can lead to settlement and cracking.
Unplanned penetrations
Drainage and service ducts should be coordinated before the pour.
Curing & joints
Weather, thickness, reinforcement and restraint affect how cracking is controlled.
How the work progresses
A six-stage route from question to handover.
The exact construction changes; the discipline of resolving information before burying it does not.
- 1
Confirm loading, size and finished level
- 2
Excavate and prepare formation
- 3
Install sub-base and service ducts
- 4
Place membranes, insulation and reinforcement
- 5
Pour, compact and finish concrete
- 6
Protect, cure and verify levels
Plan with better information
Use a calculator, then let the site visit replace assumptions.
Our tools organise quantities and project details without pretending to be a quotation. Results make the first survey more useful.
Frequently asked
Concrete Slabs & Bases questions
Clear answers before commitment make the survey, quotation and build easier to compare.
How thick should a concrete base be?
Thickness depends on loading, span, ground and reinforcement design. A garden shed, garage and structural floor should not be assumed to need the same slab.
Can you provide the whole base?
Yes, including excavation, spoil, sub-base, formwork, membranes, reinforcement and concrete placement where agreed.
How long before concrete can be loaded?
Concrete gains strength over time. The safe loading or follow-on date depends on mix, weather, thickness and design; we provide project-specific guidance.
Do slabs always need reinforcement?
No, but many structural or heavily loaded slabs do. The specification should follow the design and intended use.
Completed work
A relevant Surrey case study.
See how planning, construction sequence and finished details came together on a genuine A Jones Contractors project.
Plan the work
Practical guides for this service.
Understand the cost drivers, site evidence and approvals that matter before comparing quotations or starting work.
Practical guideConcrete Slabs: Uses, Bases & Construction
Understand when a concrete slab is used, what sits beneath it and how levels, reinforcement, drainage and curing affect performance.
Read guide Practical guideUK Foundation Depth GuideA practical guide to the factors behind UK foundation depth, including ground, trees, loads, nearby drains and Building Control requirements.
Read guide Practical guideSoil Testing Before ConstructionLearn how soil and site investigation can reveal bearing, movement, water and contamination risks before foundation or drainage work starts.
Read guideLocal service pages
Concrete bases across Surrey.
These pages explain the access, ground, drainage and planning considerations that commonly affect work in each area.
Continue planning
Related services
The next useful step
Ready to turn the site conditions into a clear scope?
Send the property location, a few photos and any drawings. We will explain the most useful next survey.