Drywall Information Center – From the CDC

  CPSC has received about 3,991 reports from residents in 43 States, the District of Columbia, American Samoa, and Puerto Rico, who believe their health symptoms or the corrosion of certain metal components in their homes are related to problem drywall. State and local authorities have also received similar reports. Homeowners report corrosion or blackening …

How can I tell if my home has problem drywall?

Answer: Briefly, the identification process for identifying whether problem drywall is present in a home is a two-step process. Step One: A visual inspection must show: Blackening of copper electrical wiring and/or air conditioning evaporator coils and Drywall installed between 2001 and 2009 If both of these are present, look for corroborating evidence. Step Two: …

White Water Mold

White Water Mold (WWM) is a naturally occurring fungus (this is NOT a form of Algae; it is animal not vegetable) that resembles white mucous or tissue paper found all over pool surfaces. WWM forms a heavy, protective coating providing the organism with an unusually high level of protection that is very resilient against halogen-based …

Stains on Concrete or Stone & Mortar Basement Walls

Stone or Block Foundations Home owners with stone and mortar foundations or block and mortar foundations must deal with the fact that 90% of these basements are damp. Over the life of the foundation, the walls shift very slightly. This slight movement opens microscopic cracks along the joint where the mortar is bonded to the …

Sewer Leak Test

Testing the Home Sewer System This section is from the book Modern Plumbing Illustrated by R. M. Starbuck. Also available from Amazon: Modern Plumbing Illustrated. The Smoke Test In applying the smoke test, a machine designed for the purpose of producing a heavy volume of black smoke is used. Various materials are used in this …

Removing Rust Stains

Removing Rust Stains from Toilets, Tubs and Sinks: Rust and other stains can occur from hard water mineral deposits found especially with the use of well water having high iron content. Staining can also occur from rusty galvanized pipes leaking into a sink, rusty toilet components leaking into the back of a toilet bowl or …

Principles of Attic Ventilation

Proper attic ventilation is recognized by most roofing professionals as a necessary component of a successfully performing steep-slope roof assembly. However, recent research has caused some roofing professionals to re-evaluate their positions on attic ventilation. Code requirements The four model building codes—The BOCA National Building Code, International Building Code, Standard Building Code and Uniform Building …

Pink Stain in Toilets

Serratia marcescens on an XLD agar plate. Obtained from the CDC Public Health Image Library Description and Significance Serratia marcescens is a motile,short rod-shaped, Gram-negative, facultative anaerobe bacterium, classified as an opportunistic pathogen. It was discovered in 1819 by Bartolomeo Bizio in Padua, Italy. Bizio named the genus Serratia in honor of and Italian physicist …

Ozone Air Purifiers

Inadequate air cleaning ability, production of harmful ozone plague ion-generating products sold as air cleaners AUSTIN, Texas—Devices that make particles electrically charged to remove them from circulating air don’t do much good and can generate substantial amounts of ozone, according to a study of five commercially available air cleaners tested by a University of Texas …

Understanding MERV Ratings

MERV ratings are used to rate the ability of an air conditioning filter to remove dust from the air as it passes through the filter. MERV is a standard used to measure the overall efficiency of a filter. Higher MERV ratings mean fewer dust particles and other airborne contaminants pass through the filter. MERV ratings …