The Indoor Mold Is An Early Warning Device

The mold (or mould, in the Queen’s English) has been the victim of a bad press. Mention the word and it conjures up an image of something rotting or in the process of decomposition. And yet, were it not for the mold that inspired the discovery of penicillin millions of lives would have been lost. If you love mushrooms and like your beer, you can thank the mold for that, too. The mold is a network of fungi but there are many different kinds: some good, some bad. One of the more undesirable types is the indoor mold. You usually find them in dank, dark sections like the attic or basement, or in the kitchen and bathroom. The mold is also likely to raise its unsightly presence in parts of the home that have been flooded or have poor ventilation.

The indoor mold can cause health problems, especially with those suffering from asthma. A greenish-black, slimy variety known as Stachybotrys chartarum has earned the name “toxic mold” and grows wet organic material rich in cellulose such as wood or paper (but not on concrete or tile). It can cause severe problems for humans as well as pets, and is one of the causes of “sick building syndrome”. This indoor mold can produce allergic reactions like watery eyes, headaches, frequent sneezing and coughing.

The upside is that an indoor mold can serve as an early warning device. It tells you that an area of the home is not properly ventilated, has excess moisture and that the air quality is inferior. You can then take steps to reduce moisture in the area and remove materials that cause mold growth.

The mold is everywhere and can survive under all sorts of conditions, even in places like the refrigerator. Some molds are resistant to anti-fungal soap or highly-acidic solvents. Therefore, when cleaning up a mold-infested area, you should always wear proper protection like a respirator mask, rubber gloves and the right clothing.

The key to cleaning up an area with indoor mold is to solve the moisture problem. Dry up the excess moisture and remove all the materials that have been infested by the mold. Get rid of items like carpets and wallpaper that cannot be cleaned and dried. First spray the area with water to keep down the dust and debris while you are removing the items. The materials should then be sealed in a double-bag and the bag wiped clean to prevent the mold from spreading to other areas.

If the area with indoor mold cannot be removed, it should be cleaned with soap or detergent. After that, it helps to disinfect the area with a diluted bleach solution. Do not sand or scrape the surfaces and avoid using a hammer to remove drywall that is mold-infested.

If the affected area is larger than 10 square feet, you may need to turn the job over to a professional mold remediator. You can find companies that specialize in restoring homes damaged by fire and water whose services include indoor mold remediation.

Share

Mould Is A Major Problem In Many Homes In British Columbia

The damp climate in British Columbia is ideal for mould growth. It is recommended that homeowners or property managers regularly check their buildings for mould growth or water damage in order to correct the problem before it gets out of hand. For people looking for homes to rent or buy, it’s important that you check for signs of mould before moving into a place and take every step possible to prevent mould in your home. Some of the activities that may lead to mould growth include cooking, washing clothes or showering without venting out the moisture. As for tenants, finding mould may not be reason enough to break a tenancy agreement and move out of a place early. Furthermore, your landlord may blame you for causing the mould problem if mould growth was due to your lifestyle.

How To Control mould Growth

  1. Reduce Indoor Humidity By:
    • Venting showers and other moisture-generating sources to the outside.
    • Controlling humidity levels and dampness by using air conditioners and de-humidifiers.
    • Providing adequate ventilation to maintain indoor humidity levels between 30-60%.
    • Using exhaust fans whenever cooking, dishwashing, and cleaning.
  2. Inspect the home regularly for signs of mould, moisture, leaks, or spills. The following suggest possible mould growth:
    • Mouldy or musty odours.
    • Water stains or discoloration on ceiling, walls, floors, and window sills.
  3. Respond promptly when you see signs of moisture and/or mould, or when leaks or spills occur:
    • Clean and dry any damp or wet building materials and furnishings within 24-48 hours of occurrence to prevent mould growth.
    • Fix source of water problem or leak to prevent mould growth.
    • Clean mould off hard surfaces with water and detergent, and dry completely.
    • Absorbent materials such as ceiling tiles, that are mouldy, may need to be replaced.
  4. Prevent moisture condensation:
    • Reduce potential for condensation on cold surfaces (i.e., windows, piping, exterior walls, roof, or floors) by adding insulation.
  5. Frequently clean floor and carpet :
    • Remove spots and stains immediately, using the flooring manufacturer’s recommended techniques.
    • Use care to prevent excess moisture or cleaning residue accumulation and ensure that cleaned areas are dried quickly.
    • In areas where there is perpetual moisture problem, do not install carpeting.

If you live in British Columbia and have a mould problem, contact our office at 604-435-6555. We may be able to help you or direct you to people who can help.

Share

How To Get Rid of Mold Growth

One of the questions commonly asked by homeowners is how they could get rid of mold growth on ceiling tiles, carpet, walls and basement. To get rid of mold completely is difficult but we can control mold growth. For us to control mold growth we need to know the factors or conditions necessary for mold growth.

For mold to grow indoors:

  • There should be a source of viable spores or hyphal fragments of the mold that can regenerate into new mold growth. The main source of spores indoors is the outdoor. Building materials may also get contaminated with mold. Spores that have settled on surfaces may remain viable for many years. Once moisture is available these spores germinate and if the moisture is not eliminated, growth continues and more spores are produced which contribute to more mold growth. Settled dust is generally a reservoir of mold spores.How to get rid of mold growth
  • Like any other living organisms, mold require nutrients for growth. Dust, dirt, and some components of building materials are contain or are nutrients for mold growth.
  • For rapid growth optimal temperature is required. Generally molds can grow under a wide range of temperatures but at suboptimal temperatures growth is slow. The optimal temperature for most indoor molds is the temperature usually maintained in houses or offices for human comfort.
  • There should be adequate moisture to support growth. Moisture is the most critical factor. The level of moisture (together with other factors) determines the types of mold that will be more prevalent/dominant in the environment.

By manipulating anyone of the factors outlined above, we can control mold growth. However, we may have very little control on spores since spores infiltrate into our houses from outdoor all the time especially when we open the doors and windows. Also, although we can set the temperature in our houses to the level we want, mold can grow over a wide range of temperatures and therefore it is practically difficult to use temperature to control mold growth…unless we want to turn our houses and offices into freezers. Moisture is the ideal factor to control. Maintaining indoor humidity levels between 30-60% would effectively control mold growth. In addition to controlling moisture, we should also provide adequate ventilation. As mentioned above dust is a reservoir for spores. Therefore, regular vacuum cleaning would help reduce the spore load in the building and hence reduce the level of mold growth following a moisture problem.

If you have a question on how to get rid of mold growth, please call us at 905-290-9101.

 

Share

Can You Paint Over Mould On The Shower Ceiling?

Recently we were asked whether it would be OK to paint over mould on the shower ceiling. Painting over existing mould is probably not a good idea because the mould may continue growing beneath the paint film and subsequently the paint would start peeling off. The best solution would be to clean the mould following current mould remediation guidelines such as CCA 82 – Mould Guidelines for the Canadian Construction Industry and then find a way of reducing condensation in the shower. Painting after the mould has been cleaned and the condensation problems fixed would be OK.

Share