Susan Sabella - May 26, 2015
A couple weeks ago, I introduced you to Michel Dedeo, HBN’s first staff chemist. Today, I have the privilege of introducing another new member of our staff, Rebecca Stamm. Rebecca recently joined HBN’s research team. As a chemical engineer who worked on a team developing and testing building materials, she brings some serious research chops to our endeavor of understanding the make-up of building products at the chemical level. Rebecca resides in Terra Haute, IN.
What drove your interest in becoming a chemical engineer?
To be honest, I’m still trying to figure out what I want to be when I grow up! I was always good at math and science and enjoyed problem solving, so engineering seemed like a good fit when I was getting ready for college. I’ve enjoyed the past opportunities I’ve had in research and product development and look forward to lending my engineering skills to the goal of healthier buildings.
What is th...
Michel Dedeo - April 30, 2015
Version 3 of Pharos continues to evolve since it was released about six months ago. This post discusses four recent changes in how we categorize and display chemicals hazards. For a more detailed description of what data are available in Pharos and how the system works, please consult the Chemical and Material Library System Description.
1. New Hazard Indicator Display
Pharos V3 was rolled out with many new features, including a new hazard indicator dot in the chemical and product search screens to display the highest listed hazard for a chemical or ingredient. In March, this system was expanded to display the highest hazards of potential residual and manufacturing chemicals as well.
The hazard summary uses colored dots to represent relative levels of hazard that are derived from authoritative hazard lists. The relative hazard levels range from purple (highest concern) through red, orange, and yellow to green (lowest concern). Grey indicates that the authoritative ha...
Susan Sabella - April 20, 2015
HBN is experiencing a small growth spurt of late, which is really exciting for us. I hope to introduce them to our Pharos users over the next few weeks.
In February, we hired Michel Dedeo as our staff chemist. Michel received his doctoral degree from UC Berkeley and has worked on material health issues with the Green Science Policy Institute, Perkins+Will, GreenScreen for Safer Chemicals, and the UC Berkeley Center for Green Chemistry. Michel resides in Oakland, CA.
What interested you in working for HBN and the area of building materials?
The organization is small and nimble and full of bright, driven people with big ideas. And most importantly, it has given itself a clear mandate to change the way materials are made - for the better. We're trying to reduce the use of hazardous chemicals in the economy, and building materials are a good place to start because they are produced and used on a huge scale. Even small changes in their composition can ha...
Jim Vallette - March 26, 2015
In the course of researching polystyrene foam insulation, the Healthy Building Network research team came to understand that these materials are susceptible to termite infestation. Polystyrene insulation manufacturers commonly add insecticides to combat termites, especially in exterior and below grade insulation. This includes a type of Styrofoam made by the dominant manufacturer, Dow Chemical.
This article is intended as a warning to beekeepers who are considering building “nucs” — the boxes that house nucleus colonies — with polystyrene foam insulation. These boards may contain insecticides that are toxic to bees.
Pesticides commonly used in polystyrene insulation include imidacloprid and deltamethrin.
Imidacloprid is a member of a class of insecticides called neonicotinoids, which cause “sublethal” effects on bees – by not killing them directly, but weakening them. The honeybees become more susceptible to death by o...
Susan Sabella - October 22, 2014
HBN, Cradle-to-Cradle Product Innovation Institute, GreenScreen/Clean Production Action and the Health Product Declaration Collaborative (HPDC) announced a new Application Programming Interface (API) at a press conference during the Materials & Human Health Summit at Greenbuild 2014. The API will allow systems like HBN’s Pharos Project and Google’s Healthy Materials Tool to draw manufacturer-provided building product data directly from the HPDC’s Health Product Declaration Builder.
Earlier this year, the organizations formed a Harmonization Taskforce Group (HTG) to streamline the inventorying of ingredients, screening of chemicals, and hazard assessment. The US Green Building Council and the Google Foundation are funding this collaborative work. The API is the first deliverable pursuant to this funding.
The API will increase uniformity of data shared by manufacturers and greatly simplify distribution of it to a wide range of certifier...
Jim Vallette - October 21, 2014
The 2014 Greenbuild conference and exhibition is happening at the mouth of what has long been described as America’s Cancer Corridor. Petrochemical plants line the Mississippi River between New Orleans, host to this year’s Greenbuild, and Baton Rouge, the state capital. Here, multinational corporations have produced a huge share of this country’s carcinogens, like vinyl chloride monomer, the essential feedstock for polyvinyl chloride (PVC) plastic products; and some phthalates, which makes PVC flexible. The industry’s impacts here spawned the environmental justice movement in the late 1980s.
These days, this serpentine industrial stretch could just as well be branded the Asthma Corridor, given the region’s growing production of essential feedstocks for polyurethane systems. These systems are increasingly popular in building applications, including adhesives, insulation (spray polyurethane foam, known as SPF) and furnitu...
Jim Vallette - October 10, 2014
by Wes Sullens and Jim Vallette
Recycling is a deeply embedded principle of green building. From the beginning of LEED®, recycling has stood by itself as an important attribute of material and waste management credits. These credits, in turn, fueled a huge increase in recycled content in many building materials, from wallboard to concrete to carpet to construction fill.
The status quo is about to change. The green building movement is in the midst of a quantum leap in understanding, during which the collection of information through transparency tools is paramount. Product ingredient data -- collected by systems like the Health Product Declaration, the Pharos Project, Declare and Environmental Product Declarations -- informs the new multi-attribute assessment structure into which LEED® Version 4 and green building in general are moving. The single attribute of recycled content is not necessarily enough anymore.
In other words, the more we learn, the m...
Melissa Coffin - September 18, 2014
Halogenated flame retardants (HFRs) used in building materials and their breakdown products can be persistent, bioaccumulative, and toxic. As such, they appear on restriction lists used by many in the green building community, including the Living Building Challenge Red List and the Perkins+Will Precautionary List. Beyond their environmental or health characteristics, discussion is growing about whether HFRs, or any flame retardant additive, even provide any benefit in a fire in the first place. [1, 2, 3]
While the debate boils over, many US building codes require high resistance to flame even for materials like insulation that are behind thermal barriers and that will have little or no exposure to a fire. This requires foam insulation manufacturers to add HFRs or other flame retardants to all of their products.  Those seeking to avoid these additives can choose inherently flame-retardant insulation, such as fiberglass and mineral fiberboard, but there...
Melissa Coffin - August 5, 2014
Building on our review of ceramic and porcelain tiles earlier this year, the Pharos team has added a Sanitary Ware category to our building product library. Flushometers, toilets, tanks, and toilet seats now appear in Pharos.
This was an interesting experience for us – trying to decipher the material composition of a class of products described only very generally: “vitreous china”, “stain resistant glaze”, or “plastic”. It seems that ingredient disclosure isn’t a conversation that’s been happening in this sector. While some products may contain a small amount of recycled content, the primary environmental concern in the industry has been, appropriately so, on water conservation.
Our review of these products uncovered some materials of concern.
First: antimicrobials. As might be expected in a product category where cleanliness is prized, toilets and toilet seats commonly contain antimicro...
Melissa Coffin - May 19, 2014
When we opened a Pharos product category for Ceramic Tiles last month, the mortars and grouts required to install them were a bit of an afterthought: essentially cement, we assumed, adding these products to Pharos would be a snap. As it happens, we were wrong on both counts. Far from just cement, there is a wide range of chemistries used to formulate mortars and grouts, each unique in the ingredients and additives required… except for one tiny exception: our research found that silver- and nanosilver-based antimicrobials are virtually standard issue in mortars and grouts.
Our review of cementitious, epoxy, and urethane mortars and grouts led us through countless technical data sheets, MSDSs, and product brochures, and the majority of grouting products (and some mortars that can also be used as grout) market formulations with antimicrobial/mold resistant/mildew resistant additives. This makes sense, of course, since grouts are on the surfaces of floors an...