Lead Dust Testing Outside?

Lead Testing using XRF Gun
Dust Settling on Outside Patio or Furniture? I was sitting on my porch in San Francisco watching kids play on the wooden deck and started to wonder, “is the dust on my porch contaminated with lead dust? If so, how best to clean it up?” So I did a little experiment and tested for lead
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A Clean Crawlspace is Better For You and Your Home

Clean Crawlspaces and Basements are Good for Health
Is a Clean Crawlspace Really That Important? Crawlspaces are generally not what anyone would consider “clean.” When was the last time you went into a crawlspace? It’s typically a dark, dank environment where critters and odors scare away even the bravest DIY building owners. Often old construction materials and cardboard boxes are crammed down below,
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DIY Box Fan Filter – MERV 13 versus HEPA Air Purifier

Air flow of fan filter on intake side. Wildfire smoke and air quality
DIY Box Fan Filter & Air Quality Experiment Here in San Francisco and surrounding areas kids are stuck indoors during this smoke wave caused by our wild fires with little or no air filtration. In San Francisco the school buildings are older and are not setup to have building wide air filtration. Nor can cash-strapped
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Airtight Construction for Laboratories

Effects of Airtight Construction on Lab Pressurization Most labs and clean rooms require airtight construction to create differential pressure with respect to adjoining spaces. Labs are usually maintained at slightly negative pressure to keep the chemicals used in the labs from migrating to adjacent spaces. Clean rooms, on the other hand, have to be kept
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Sick Building Syndrome and Building Related Illness

Sick Building Syndrome
Sick Building Syndrome and Building Related Illness What is the Difference? Sick Building Syndrome and Building Related Illness are two distinct diagnoses. People often use the term “sick building” when referring to a property, but buildings don’t get sick – people do. I believe if there are numerous people suffering from Sick Building Syndrome (SBS) it’s okay to
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