12 complete symptom paths42 guides and 60 questions in each1,460 Grade A articlesOne searchable, connected knowledge library140 official sourcesEvidence context with explicit limits
Climate intelligence

Cool temperate

Heating-season condensation combines with long wet periods and retrofit-sensitive ventilation.

N4regional packs
Dominant symptom clues

Watch for these patterns

  • window mould
  • loft condensation
  • solid-wall damp
  • musty rooms
Priority checks

Evidence to collect first

  1. indoor humidity
  2. extract ventilation
  3. wall temperature
  4. rain exposure
Regions using this layer

Different buildings, shared climate behaviour

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