InspectOS · Moisture Inspection · Process and Risk Guide

What a moisture inspection finds — and what it means for your purchase

Four on-site tools. A timestamped engineering report. The only independent record of a property's moisture condition at the date of purchase.

Inspection process — on site and post-inspection
1
Thermographic scan
IR camera maps wall and ceiling temperature anomalies. Detects moisture hidden behind paint and plaster.
2
Hygrometer readings
Contact and non-contact sensors measure moisture content in masonry, timber, and floor substrates.
3
Visual assessment
Engineer checks for paint concealment, mold odor, pattern staining, and cosmetic masking indicators.
4
Written report (48h)
Timestamped report with IR images, readings, root-cause analysis, and remediation scope estimate.
Defect severity — what each finding means for a buyer
Finding Severity Buyer risk Recommended action
Active capillary rise at foundation / ground floor Critical Structural masonry degradation over time. Remediation requires external waterproofing works — €15,000–40,000 Price reduction or withdrawal before CPCV
Roof membrane failure causing ceiling infiltration Critical Recurring water ingress until roof replaced. Reinforced concrete corrosion risk in older stock. Condition resolution before deed signing
Neighbor-origin ingress through shared wall High Liability attribution is often disputed. May require condominium-level legal action to resolve. Legal review + condominium inspection
Concealed mold colony behind plasterboard High Health risk. Indicator of chronic moisture not yet fully manifesting at surface. Full scope unknown without destructive investigation. Price negotiation + scope clarification
Condensation-driven surface mold on external walls Medium Addressable with insulation improvement and ventilation. Cost €2,000–8,000 depending on scope. Price adjustment or seller remedy
Isolated damp patch, origin identified and contained Low Manageable with targeted treatment. Documented in report for negotiation reference. Document in CPCV; proceed with caution
With report vs. without — buyer position under Código Civil Art. 342
With pre-CPCV inspection report
Timestamped documentary evidence of property condition at purchase date
Root-cause analysis establishes defect as pre-existing, not post-purchase
Thermographic images usable as technical exhibit in civil proceedings
OE-licensed engineer report carries weight in Portuguese courts
Negotiation leverage before CPCV deposit is at risk
Without pre-CPCV inspection report
Buyer must prove defect existed before deed — burden of proof (Art. 342 CC)
Seller can argue damage occurred after possession — no independent baseline
No timestamped record of condition; courts rely on disputed witness accounts
1-year notification window (Art. 916 CC) may have lapsed before full extent discovered
Litigation costs often exceed remediation cost for contained defects
Sources: Código Civil Art. 342, 913, 914, 916 · Acórdão TRC 235/22.5T8TND.C1 (October 2025) · Decreto-Lei n.º 38 382/1951 RGEU Art. 23 · Portaria n.º 304/2019 · Decreto-Lei n.º 10/2024 de 8 de janeiro (Simplex Urbanístico) · InspectOS Moisture Inspection Service · Remediation cost estimates: InspectOS field data 2025-2026