Controlling the Building Environment
Discover how a mold inspection can lead your next bathroom or kitchen remodel to success. After a recent flood, water discharge, rain, or sewage backup mold growth has the potential to grow within 24-48 hours. An important initial step is the mapping of moisture. Thereafter, dehumidification and moisture control of the building materials are assessed regularly. Impacted materials should be removed if moisture levels are not returned to non impacted material moisture levels after 72 hours.
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Design Considerations for building assemblies
Below is a summary of moisture movement behavior through building
assemblies and strategies to prevent moisture problems. Numerous
strategies can be implemented to reduce the amount of moisture into a building
structure. 1) control moisture entry 2) control moisture
accumulation 3) removal of moisture. These strategies have proven
effective and when utilized in combination prove the most effective. For
example, moisture assemblies starting off wet, prove to be the most detrimental.
Also, construction designs to prevent moisture from entering can also prevent
moisture from leaving.
In order to control the moisture levels the method of transport must be
understood. Moisture related problems are typically related to one of the
following mechanisms of transport. Each mechanism must be dealt with
independently during the design and construction phases.
* Liquid Flow * Air movement * Vapor diffusion
* Capillary suction
These four mechanisms can be controlled through the use of efficient building
design and maintenance. Controlling ground water entry has been a full
time occupation of builders and designers.
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Tighter building construction
The evolution of building design has led to many different innovations since the
1950's. The same type of building construction today is twice as tight as
its counterpart built a few decades ago. The tighter building construction
has led to less air exchange, eliminating drafts to increase efficiency and heat
ratings. The lower exchange ratio of fresh outdoor air into the building
cavity causes relatively low dilution factors of chemicals, VOCs, radon, and
carbon dioxide. Indoor Environmental Issues & the Insurance Industry.
Either vapor permeable or vapor impermeable finishes may be used on interior
surfaces. Basements that need to have an additional vapor barrier will
require a vapor diffusion retarder.
Concrete can be a large source of moisture when initially placed. Covering
the surface of the concrete with impermeable substances can lead to moisture
retention. The first few months of occupancy detection of moisture levels
maybe elevated if proper drying of the building materials ahs not been timed
People exposed to black and toxic mold have reported many symptoms,
including, but not limited to:
* Headaches *Wheezing *Nose Bleeds *Fatigue *Memory Loss *Stuffy Noses *Sore
Eyes *Dizziness *Sore Throat *Coughing *Sneezing *Respiratory Ailments *Asthma
*Skin Irritations *Breathlessness *Runny Nose *Horseness *Inflammation of the
Sinuses *Blurred Vision *Burning Eyes *Dry Cough