Architects Knowledge Centre
Technical guidance, thermal data, CAD details, and specification support for architects designing with ISOQUICK® insulated raft foundations.
Guided journey: 5 essential steps
1
What makes an insulated raft foundation different from a standard raft?
Step 1 of 5
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2
Thermal performance — U-values, Psi-values, and compliance
Step 2 of 5
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3
Design integration — RIBA stages, CAD details, specifications
Step 3 of 5
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4
Certifications and building regulations
Step 4 of 5
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5
Request CPD or technical support
Step 5 of 5
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FAQs for Architects
What is an insulated raft foundation?
An insulated raft foundation is a reinforced concrete slab that sits on top of a layer of load-bearing insulation,...
Why Use an Insulated Raft Instead of a Traditional Raft with Insulation Above?
Insulation below the slab does more work, with less effort. When insulation sits above a concrete raft, the concrete...
What Is the Minimum Concrete Thickness for an Insulated Raft Foundation?
200mm for most houses. 250mm for taller buildings. If a supplier is showing you anything less, ask them to explain...