Costs & Budgeting

Understand what drives the cost of an insulated raft foundation, compare fairly with traditional methods, and learn how to get an accurate budget figure.

1. What affects the cost of an insulated raft foundation?

Several factors influence price: slab area, ground conditions, insulation depth, edge profile complexity, and whether you need a full design-and-supply package or just materials.

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See how each factor affects pricing with typical ranges and programme implications.

2. What is included in ISOQUICK® supply vs what the client provides?

ISOQUICK® supplies the engineered EPS foundation system. The client typically provides groundworks, concrete, reinforcement, and craneage — though we can advise on all of these.

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See the complete scope breakdown with typical cost allocations.

3. How to compare costs fairly with traditional construction

When comparing quotes, include the costs that disappear with an insulated raft: no screed, no perimeter blockwork, no shuttering hire, and a shorter programme.

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See a worked example comparing a traditional build with an ISOQUICK® insulated raft.

4. Cost vs value — whole-life framing

Lower heating bills, faster construction, and eliminating costly mistakes make the insulated raft a better long-term investment than many first quotes suggest.

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See real-world heating cost projections and programme savings data.

5. How to get a budget figure from ISOQUICK®

Send us your plans, plot size, wall system, and thermal target. We typically return a detailed quote with thermal calculations within 48 hours.

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See the complete checklist and typical quotation turnaround times.

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Who is this for?

Self-Builders Architects Timber Frame Companies Builders & Developers