IAQ Building Education and Assessment Model (I-BEAM)
Visual Reference Modules
(Mouse over the pictures to see "Hot Spots" that reveal messages which are referenced in more detail.)
|1. Control Water Accumulation and Leaks
||2. Remove Excess Water Quickly
Remember...“Standing water breeds biocontaminants.”
(Hot Spot on large area on front covering the air intake and some of the puddle of water.)
- Standing water on roofs can be incubators for microbial growth. Create a sufficient slope and smooth surface to prevent puddling, especially near the outdoor air intake.
- Hot Spot over the pan and dripping water and encompass some of the carpet.
Remember...“Fix leaks immediately.”
- The key to controlling mold is to control moisture.
- Any water incursions into the building will create an atmosphere for microbial growth within a short period of time.
- Roof leaks must be repaired quickly to avoid rot and microbial contamination of the interior of the building shell.
- Porous material such as ceiling tiles and carpets should be dried within 24 hours to avoid mold growth. Water stained tiles or porous materials that have a musty odor should probably be discarded since decontamination is often not practical.
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Remember...“Wet vacuum floors, carpets, and furniture to remove excess water as soon as possible.”
(Hot Spot over wet vacuum and wet portion of carpet.)
- As soon as a leak or spill is noticed, all excess water should be removed using mops or wet vacuums as appropriate.
- Wet surfaces that are supposed to be dry require immediate attention to prevent microbial growth.
|3. Thoroughly Dry Wet Materials
||4. Numerous Sources of Moisture Promote Mold Growth
Remember...“Wet materials should be thoroughly dried within 24 hours to prevent microbial growth.”
(Hot Spot over fan in the middle of the picture)
- Once excess water is removed, porous materials probably require special equipment involving fans and heat and/or dehumidification to promote drying quickly. Move the fans as necessary to insure all sections are dried.
- Water stained or damaged tiles should probably be discarded, as should any furniture, carpet, or other materials that have a persistent musty odor. This is because once contaminated, decontamination is often not practical.
Remember...“Water damaged tiles should be discarded”
(Hot Spot on stained ceiling tile)
- While it is not certain that all water stained tiles necessarily harbor microbial growth, there is a good chance that they do.
- The damaged tiles indicate a present or past problem. Generally, it is a good policy to replace tiles that are damaged to protect occupants. In addition, with such a policy, any sign of water damaged tiles is also a sign of an active moisture problem that should be investigated.
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