Portugal · Damp & Mold Diagnostics

Measure it before
you treat it.

mold.pt is Portugal's independent, evidence-based source for damp and mold — diagnostics, curated products, and vetted remediation. No free scare-diagnosis. No unproven devices. Every recommendation is backed by a measurement.

Sample Reading — Bedroom, Porto Logged 06:12
Relative Humidity78% RH
Surface Temp — North Wall11.4°C
Dew Point Margin-0.6°C
StatusCONDENSATION RISK
25.2%of PT homes report damp or structural moisture
1,200+diagnostics logged since launch
€0cost to see transparent pricing
The Method

Inspect. Test. Remediate. Verify.

A fixed sequence, every time — because guessing at the cause is how mold comes back.

01 / INSPECT

Visual survey

A vetted inspector walks the property and logs every visible sign — not a sales visit, a documented survey.

02 / TEST

Measurement

Hygrometry, surface temperature and moisture-meter readings pinpoint the actual cause — condensation, penetration, or rising damp.

03 / REMEDIATE

Fix the cause

Matched to what the data showed — product, ventilation, or a vetted remediation partner. Never a treatment before a diagnosis.

04 / VERIFY

Re-measure

A follow-up reading confirms the fix worked — published as your before/after record, not taken on faith.

Findings

We publish what the evidence actually shows — including about products we don't sell.

Cited to WHO, US EPA, IICRC S520 and ECHA. Every piece is typed into one of four categories, dated, and sourced.

What Works · 10

Source control & dehumidification

  • Fixing leaks and cold surfaces
  • Ventilation matched to moisture load
  • Desiccant dehumidification in unheated rooms
  • HEPA filtration during remediation
What We Won't Sell · 3

Named refusals

  • Electro-osmosis "damp reversal" devices
  • Bleach as a remediation strategy
  • Ozone generators in occupied spaces
Case Studies · 1+

Our own diagnostic data

  • Before/after hygrometry from real inspections
  • Annual review of what the data showed
  • Growing with every completed diagnostic
Reference · 12

Neutral background library

  • Portuguese damp terminology & glossary
  • Building science, regulation, geography
  • No product tie-in — citation-first
Read the first Reference piece →
Shop

Coming soon.

View shop
For Owners Who Aren't Here All Winter

Come home to a dry house.

Algarve and Silver Coast properties left closed October–April are the single most predictable mold cycle in the country. A remote sensor, a scheduled dehumidification plan, and two seasonal inspections — verified dry, every time you return.

Explore Winterization →
For Agencies, Property Managers & Insurers

Mold gets found at the worst possible moment. Be ready for it.

A €150–300 pre-transaction report, or documented remediation for a claim in progress — fast, independent, and citable to a buyer, seller, or adjuster.

Talk to our B2B team →