Jak může vlhkoměr pomoci najít vlhkost a růst plísní

Mold can grow almost anywhere in a home that stays damp, and it can damage building materials and affect the people living there. Moisture meters can’t detect mold itself, but they can find the damp conditions mold needs to grow.

This guide explains the warning signs of mold, where the moisture behind it comes from, and how a moisture meter helps you catch moisture problems before mold takes hold.

• Může vlhkoměr detekovat plíseň?
• Jaké jsou varovné signály plísní?
• Odpornost plísně
• Jak vzniká plíseň
• Co způsobuje vlhkost ve zdech?
• Jak se zbavit plísní?
• Is There a Moisture Meter for Mold?

Může vlhkoměr detekovat plíseň?

No, a moisture meter can’t detect mold, but it can find damp areas where mold might grow. With a pinless moisture meter, you can scan the surface of wood, drywall, and other materials to find areas with too much moisture.

Moisture meters help you find damp spots where mold could grow. Wood that stays below about 20% moisture content (MC) generally won’t support mold, so if a reading in wood is above 20%, check the area for mold and find the source of the moisture.

Humans have reason to attach negative connotations to mold. When food goes bad, mold appears. When a living space holds too much unventilated moisture, mold grows. Fabric stored in damp places gets its musty smell from mold.

More seriously, mold releases spores and other substances into the air as it grows inside a home, and over time this can affect people’s health. As the U.S. Environmental Protection Agency puts it, “The key to mold control is moisture control.”

Jaké jsou varovné signály plísní?

Změna barvy a test bělení

Discoloration is one of the most apparent signs of a mold issue. Mold can appear in various colors, including black, green, white, orange, and even pink, depending on the type and the surface it grows on.

For a quick home check, dab a little diluted household bleach on a suspected mold spot. If the stain lightens or disappears, it could be mold. However, some stains and some types of mold won’t react to bleach, so it’s not a definitive test. Wear gloves, keep the area ventilated, and never mix bleach with ammonia or other cleaners.

Zatuchlý/zemitý zápach

Plíseň má charakteristický zemitý zápach, často popisovaný jako zatuchlý. Pokud zaznamenáte neobvyklý přetrvávající zápach, může to znamenat skrytá plíseň. Such an odor can come from behind wallpaper, under floorboards, inside walls, and other areas where mold commonly grows.

Skvrny od vody nebo vlhkost

Plíseň miluje vlhkost. Jakékoli známky vlhkosti, jako jsou skvrny od vody, olupující se barva nebo zdeformované stěny a podlahy, mohou naznačovat problém s vlhkostí a možný růst plísní. Pokud si takových příznaků všimnete, je důležité co nejrychleji identifikovat a odstranit zdroj vody, abyste zabránili dalšímu růstu plísní.

Kondenzace na površích

Mold grows readily in humid environments. Regular condensation on windows, pipes, or walls may suggest higher-than-normal indoor humidity and the potential for mold growth. The EPA recommends keeping indoor relative humidity below 60%, ideally between 30% and 50%.

Viditelný růst

V pokročilých stádiích můžete spatřit viditelný růst plísně. Může se jevit jako fuzzy, slizká nebo prášková látka a může mít zelenou, černou, bílou nebo hnědou barvu.

Odpornost plísně

Zde je několik dalších základních bodů k pochopení plísní:

• Plíseň potřebuje k růstu vlhkost.
• Vlhkost uvnitř stavebních materiálů může způsobit růst plísní.
• Plíseň neroste na suchých materiálech.
• Mold can start growing in places where no water can be seen.

Jak vzniká plíseň

Moisture is present in every building because it is part of our natural environment. Builders construct homes using wood and concrete (among other materials), and both contain some moisture.

Profesionální instalatéři používají vlhkoměr to measure the MC of their materials during the building process to make sure they’re at safe moisture levels.

Today, moisture meters are easy enough to use that homeowners as well as contractors can check building materials regularly to see if their MC changes.

Co způsobuje vlhkost ve zdech?

Moisture can move up through concrete floors, leak from plumbing, roofs, and windows, and come from everyday activities like bathing, washing, and cooking. Moisture naturally builds up in homes, and the excess needs to be ventilated.

Even changes in relative humidity (RH) can influence the MC of building materials. When RH is high, materials such as wood absorb water vapor from the air; when RH is low, the same material releases water vapor as it moves toward a balance with the air.

Building materials constantly interact with the RH and temperature of their surroundings. That’s normal, and not something to fear.

It becomes a problem when too much moisture builds up in one area without ventilation, which can lead to mold growth.

Pokud chcete více informací o Jak používat vlhkoměr na sádrokarton, přečtěte si našeho komplexního průvodce.

Jak se zbavit plísní?

You can’t eliminate moisture entirely, but you can eliminate the moisture problems that lead to mold. Find and fix the source of the water, and dry water-damaged areas and items within 24 to 48 hours to prevent mold growth, as the EPA advises. According to the EPA, if the moldy area is smaller than about 10 square feet, you can usually clean it up yourself; larger areas call for professional help.

Building professionals use moisture meters to measure the MC of wood building materials and RH tests to measure the moisture in concrete slabs. Both readings are shown as percentages, and quality builders know the moisture targets for their materials. In essence, they have the tools to stop mold before it starts.

Odborníci monitorují vlhkostní podmínky během výroby a instalace dřevěných stavebních materiálů a během vytvrzování betonových desek, aby mohli učinit nejlepší stavební rozhodnutí pro úspěšný projekt.

Is There a Moisture Meter for Mold?

There’s no moisture meter that detects mold itself, but Wagner Meters makes moisture meters and moisture tests for wood, concrete, and other building materials. Wagner Meters’ handheld wood and měřiče vlhkosti pro inspekci budov quickly scan materials to give instant MC readings.

Homeowners can buy their own meter to check for moisture problems in their homes and fix them before they lead to mold.

Moisture will always be with us, but excess moisture doesn’t have to lead to mold in the modern home. Use a good moisture meter and keep moisture at appropriate levels so mold doesn’t get the chance to grow.

For woodworkers, controlling wood moisture content matters just as much. Read our article “Řízení obsahu vlhkosti dřeva: klíčový faktor úspěšného zpracování dřeva“, abyste se dozvěděli více.

Vlhkoměry Orion

Naposledy aktualizováno 7. října 2026