When performing EMF surveys many “EMF consultants” only evaluate low-frequency magnetic fields. When folks call and say they “have an EMF meter” and are measuring “high emf,” they generally have a Gauss meter and are measuring magnetic field field strength or magnetic flux. Most Building Biologists focus on Alternating Current (AC) electromagnetic fields, and in addition
Radiation Exposure How Much Is “Too Much” Alex Stadtner, president of Healthy Building Science, wrote a blog in April 2012 entitled “Radioactive Granite and Quartzite – Risks from Radon” about discovering high levels of radiation in Quartzite and Granite used in residential building for items such as countertops, flooring, and bath and shower enclosures. While
Smog and Particulates How Fine Particulates Affect Exterior and Interior Air Quality No matter how well our “Green and Healthy” homes are designed and built, our interior air quality can only be as good as our exterior air quality (our “source air”), unless we add active air filtration into our building design. But how do
EMI and LEDs – Not all LEDs are the same! Electromagnetic Interference (EMI, aka: “Dirty Electricity,” or “High Voltage Transients”) is a term coined for quick transient pulses, harmonics, spikes and dips in the electrical power in a home’s wiring that deviates from a purely 60Hz sine wave. These often occur due to computers, other
Most of this blog on how to clean up mold is from the “Help Yourself to a Healthy Home” guide from HUD. We generally suggest hiring an established remediation company with professionals certified by the IICRC… but many cannot afford to pay for that service or don’t feel it’s necessary. Personal Protective Equipment (PPE) for
Mold in the Home – What to do? What to do about mold in the home, how to avoid it, how to clean it up, is mold testing a good idea? etc. This blog focuses on residential mold tips. Many of these best practices are drawn from the following government-sponsored resources on healthy homes: Help
What is a Sick Building? There is often confusion over the definition of a sick building. We hear questions like, “Is my building sick?,” and, “How do I know if my building is sick?” Therein lies much of the confusion. Buildings don’t get sick, people do! Sick Building Syndrome (SBS) Determining if occupants suffer from
Healthy San Francisco Earth Day! We had a lovely, healthy San Francisco (420) day – April 20th! Our Healthy Building San Francisco Earth Day booth was in the center of Civic Center Plaza with a great view of happy, healthy people AND San Francisco City Hall! See a few Thermal Portraits below… Healthy San Francisco
EMF from LED Lights and Recessed LED lights Is there significant amounts of EMF from LED Lights? A designer client of mine had a job she was working on, where her client, a homeowner, was concerned about the magnetic fields in her home. She was designing a remodel, which included the kitchen, and the designer had
LEED EMF ID Credit Application The USGBC/LEED recently denied an Innovation in Design (ID) credit application for Magnetic Field (EMF) Reduction. This post includes the official LEED EMF ID Credit Application. The following text is in the traditional formal of an ID credit application and request for a Credit Interpretation Ruling (CIR). Unfortunately the USGBC
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