A Qordac vertical · home humidity
Diagnose first. Then buy.
Mould has a cause. A dehumidifier sometimes treats it, often not. IgroCasa helps you tell condensation, rising damp and simply saturated air apart — with calculators, not invented rankings.
Dew point
12.0 °C
Magnus-formula estimate. Not a laboratory measurement and not a building certificate.
At 20.0 °C and 60 % RH the dew point is 12.0 °C. If a surface (single glazing, reveal, behind a wardrobe) nears that figure, condensation can appear. At 20 °C and 60 % RH the expected result is about 12.0 °C.
The October–March season is approaching. A hygrometer and a two-week log beat a September guess-purchase.
Journeys
Four typical entries. Monetisation comes after diagnosis, if it is relevant.
Guide → tool → solution
You arrive from search, read the method, use a calculator, then a relevant product if needed.
Problem → diagnosis
Window condensation, a mouldy corner: the guided diagnosis gives a track, not a survey.
Tool → reading
Start from dew point or the humidity log; the guides then explain the numbers.
Compare → category
Buying criteria, not invented rankings. Affiliate links stay off until the programme is real.
Start here
damp in the house
Damp at home: diagnosis before the product
A step-by-step way to tell condensation, indoor vapour, rising damp and leaks apart. What to measure, what to watch, when not to buy a dehumidifier.
mould in the house
Mould at home: prevention without magic
How indoor mould gets going, what to do in practice, and when to stop. A building guide, not a medical one.
which dehumidifier to buy
Dehumidifier: when it helps, when it does not
Honest criteria for whether a compressor dehumidifier is the right tool. No ranking of untested models.
Free tools
Dew point calculator
Estimate indoor dew point with the Magnus formula. Use it to see whether cold glass or walls will run with condensation.
Surface mould-risk estimate
Compare estimated surface relative humidity with the conventional 80% threshold in EN ISO 13788.
Dehumidifier sizing estimate
Estimate litres/day from volume, how damp the space feels, and indoor laundry. Not a laboratory rating.
Dehumidifier running cost
kWh and euros from watts, hours and the unit price on your own bill. No invented tariffs.
Guided damp diagnosis
A short question path on where the problem appears, when, and whether it climbs from the floor. A working hypothesis, not a survey.
Home humidity log
Record temperature and relative humidity for two weeks. Dew point is calculated each day. Data stays on your device.
Topic clusters
Diagnosing damp at home
IgroCasa cluster on diagnosis: condensation, rising damp, leaks and saturated indoor air. Method, tools and common mistakes.
Condensation
Why windows run with water, when condensation signals high humidity, and when it is simply a cold single pane.
Mould
How indoor mould gets a foothold, what you can do yourself, and when to call a specialist. This is not medical advice.
Dehumidifiers
Buying criteria without invented rankings: capacity, climate, noise, running cost.
Ventilation
How to remove vapour without freezing the house. Indoor laundry, windowless baths, versus a dehumidifier.
Editorial method
- Building physics before products.
- No reviews of models we have not tested.
- Every figure has a source, or is labelled an estimate.
- Commercial pages stay secondary to diagnosis.