Real ChatGPT answer · index seedHJSdd3s0Ct4completeHome services and improvement · flooringinformational

What thickness of XPS foam board insulation should I use under a plywood sleeper subfloor over a cold basement concrete slab to prevent condensation and maintain headroom.

ChatGPTgpt-62 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
What thickness of XPS foam board insulation should I use under a plywood sleeper subfloor over a cold basement concrete slab to prevent condensation and maintain headroom.
2 real searches · 1 real-search pass
Building Science Corporation basement slab rigid foam insulation subfloor condensation XPS thickness sleepers plywoodGoogle ↗
OBSERVED
DOE basement floor insulation rigid foam concrete slab subfloor vapor condensation XPSGoogle ↗
OBSERVED

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

Classifying 2 queries…

Searches and sources

ChatGPT2 real searches · gpt-6
Building Science Corporation basement slab rigid foam insulation subfloor condensation XPS thickness sleepers plywood Google ↗
DOE basement floor insulation rigid foam concrete slab subfloor vapor condensation XPS Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
Building Science Corporation basement slab rigid foam insulation subfloor condensation XPS thickness sleepers plywood
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
DOE basement floor insulation rigid foam concrete slab subfloor vapor condensation XPS
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1