Moisture and mould are common in many homes. In most cases they
can be avoided by improving the ventilation in the home, and making
adjustments to the amount of steam and water egress into the home.
When moisture levels inside a home reach high levels, molds and
dust mites appear, causing serious health problems for some, including
allergies, asthma and stachybotrys poisoning.
in addition to the health hazards in a home with high moisture
levels, these homes are very energy inefficient. This is because
it damp or moist air is much harder to heat than dry air, causing
your heating bill to escalate.
There are many things you can do to improve the health of your
home, and its inhabitants, including:
- Floor insulation - moisture can be the result of dampness under
the house being transferred into the home. If your underfloor
area is damp, install a vapour barrier such as a plastic ground-sheet
or insulation panels.
- Reduce Condensation - condensation occurs when excess water
vapour in the air comes in contact with cold surfaces. This is
common on the inside of windows on cold days, and bathroom walls
and mirrors in poorly ventilated bathrooms. Condensation encourages
the growth of mould on wallpaper, curtains and ceilings.
- Air Storage Rooms and Contents - Mould often grows on items
such as clothes, shoes and cellulose based items stored in wardrobes
- Improve Ventilation - especially in bathrooms and bedrooms by
opening a window to increase air circulation, and allow moisture
- Install a Ventilation System - forced ventilation systems replace
moist air in the house with dry air from the ceiling. Forced ventilation
systems don't suit flat-roofed houses.
- Reduce Moisture Ingress - Keep lids on saucepans when cooking
and install a rangehood over the stovetop and a bathroom fan vented
to the outside. Ensure clothes dryers are also vented outside.
Don't hang wet clothes or washing inside to dry.
- Use Efficient Heating Systems - avoid using unflued gas heaters
and portable LPG heaters
- Keep Your Home Envelope Watertight - enure roofs and guttering
are in good condition and sealants are still working effectively.
Ensure air can circulate freely under the house.
- Water Mangement - check for any leaky pipes dripping under
the house or within the walls.
- Dehumidifiers and forced ventilation systems - these take a
lot of energy, but if other methods still do not sufficiently
contain the moisture in your home, they are a better option than
Regardless of the techniques you deploy, the key aim is to get
dry air into the house and moist air outside. Using air purifiers
or dehumidifiers with effective Filters below one micron are the
best way to eliminate insulation fibres and dust mites from the
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