California Mistakes Put Spray Foam Insulation on the “Bad List”

Spray Foam Insulation California Dtsc Karl Palmer 600

Last summer I learned about the state of California’s efforts to create more healthful buildings and working conditions. In 2008, they passed the California Green Chemistry Initiative with the intent of reducing state residents’ exposure to toxic chemicals. California leads the US in new directions all the time, and green chemistry could be another. Unfortunately, though, they were slow out of the gate and their initial attempts to implement the law don’t instill confidence.

Last summer I learned about the state of California’s efforts to create more healthful buildings and working conditions. In 2008, they passed the California Green Chemistry Initiative with the intent of reducing state residents’ exposure to toxic chemicals. California leads the US in new directions all the time, and green chemistry could be another. Unfortunately, though, they were slow out of the gate and their initial attempts to implement the law don’t instill confidence.

The Safer Consumer Products Program

I’ll distill this issue down as much as I can because it’s easy to get confused if you dive in and try to figure it all out. First, the Green Chemistry Initiative, also called the Green Chemistry Law, contains six recommendations. (Karl Palmer,1 an administrator at the California Department of Toxic Substances Control who’s pictured above, specified the California Assembly bill numbers as AB 1879/SB 509.) 

The Safer Consumer Products Program stems from recommendation number 5: Accelerate the quest for safer products.

Here’s how it works:

Step 1

The state puts together a list of “candidate chemicals.”  The DTSC website says there are about 1200 on the list.

Step 2

The DTSC identifies products that use those chemicals and singles out any that they believe should be scrutinized further. These are called Priority Products. In March 2014, after six years of trying to implement Green Chemistry Initiative recommendation #5, they finally announced the first three Priority Products:

  1. spray polyurethane foam (SPF) with unreacted diisocyanates
  2. children’s foam padded sleeping containing TDCP (a flame retardant)
  3. paint and varnish strippers and surface cleaners with methylene chloride

The DTSC writes a Priority Product Profile for each one, giving the scientific reasoning behind its inclusion on the list.

Step 3

The “responsible entities” for a Priority Product must then do an Alternatives Analysis to see what they might be able to do to make their product safer.

Step 4

California then decides what regulations to impose on Priority Products.

The acronym and initials soup

I’ve already given three of them above, but there are plenty more acronyms and initials that you’re likely to run across when you start reading about this. Here are the main ones I’ve seen bandied about:

DTSC – Department of Toxic Substances Control
SCP – Safer Consumer Products (Program)
SPFA – Spray Polyurethane Foam Alliance
ACC – American Chemistry Council
CC – Candidate Chemicals
PPP – Priority Product Profile
SPF – Spray polyurethane foam
MDI – Methylene diisocyanate
TDI – Toluene diisocyanate
HDI – Hexamethylene diisocyanate
AA – Alternatives Analysis
PPE – Personal protective equipment
 

The DTSC mistake-fest

At this point, California is still on step 2. They’ve identified the first three Priority Products and written profiles on them. The one I’m interested in is spray polyurethane foam insulation, and the DTSC released the initial profile on 13 March 2014.

I say “initial profile” because six months later they released a revised version of the SPF Priority Product Profile (pdf). And when I say revised, I mean seriously marked up and changed. Why? Because it was full of mistakes.

The two biggest mistakes, which could be considered fatal flaws, are:

  • The DTSC assumed spray polyurethane foam contains two chemicals that aren’t in it. It has methylene diisocyanate (MDI), not hexamethylene diisocyanate (HDI) or toluene diisocyanate (TDI). 
  • Much of the documentation on health effects cited in the profile did not apply to SPF. As a result, their strong statements on the problems with SPF had to be toned way down.

If you download and read the revised report (pdf), you’ll see what I mean. The 30 page report probably wouldn’t even be 20 pages with all the strikeouts removed, and they’ve toned the language way down.

For example, where it used to say:

“Diisocyanate exposures have been the leading attributable cause of work-related asthma” (emphasis added);

it now says:

“Diisocyanate exposures have been a leading attributable cause of work-related asthma.” (emphasis added)

But even the revised report is misleading. Take a look at the health studies they still cite and you’ll see that a lot of the documented negative health effects don’t apply to spray foam but to spray paint and spray-on truck bed liners.

“Harmful or fatal incidents cited involved workers spray painting cars, applying spray-on truck bed liners, installing foam, and exposed to adhesives used in coal mining.”

Is MDI a hazard?

Are the unreacted diisocyanates from spray foam hazardous? Yes. No one questions that. The SPF industry, however, has gotten much better about not putting its workers at risk. Nearly all installers now wear appropriate personal protective equipment, including respirators with air pumped in from outdoors. Gone are the days when an installer would spend hours in an attic or crawl space with only a dust mask.

I’ll write more about this issue in a future article, but the way I understand it, unreacted MDI is a short-term problem. Most people I’ve talked to say that 24 hours after spraying, there’s next to none of it left in the environment. The hazards of spray foam exist mainly during the installation and in the hours afterward.

Paul Duffy of Icynene, at one of the DTSC workshops mentioned in the next section, cited a research study of freshly sprayed or recently cut SPF and said, “What we found in that work was we could not find unreacted isocyanates five minutes after spray. Five minutes.”

The better question to ask, however, is how much risk does spray foam present? Rick Duncan, PhD, PE, Technical Director of the Spray Polyurethane Foam Alliance, told me that the California DTSC is reacting to hazard rather than risk. Yes, it’s a hazardous substance, but the risk has a short life and is well managed.

The DTSC takes heat

When the DTSC announced that spray foam was one of the first three Priority Products to be listed and released its profile report, the reaction was swift and strong. The DTSC held three public workshops to take comments on the Priority Product Profile of SPF. If you have time and want to dive in deeply, you can read the transcripts, available on the DTSC website:

The spray foam industry was well represented at these meetings and gave the DTSC crew, including Karl Palmer and Dr. Dennis Guo, a research scientist with the DTSC, an earful. Paul Duffy of Icynene has some great comments in the 7 May transcript.

In addition, the industry trade association, the Spray Polyurethane Foam Alliance (SPFA), and the American Chemistry Council (ACC) have weighed in. They’ve submitted documents and letters to the DTSC and have even asked to have SPF taken of the Priority Product list.

I also received a copy of a letter that three California Assemblymen (Jim Patterson, Adam Gray, and Donald Wagner) sent to the director of the DTSC last December. In it, they wrote:

“While ensuring that products created and sold for use in California are safe for consumer use is an important goal, the Department did not adhere strongly to its own statutory mandate and regulations regarding industry consultation and duplicative regulations in this process, and ultimately caused undue harm to the spray foam industry.”

I wasn’t at those hearings but did get to attend Karl Palmer’s presentation at the SPFA conference in Albuquerque earlier this year. (That’s where I took the photo above.) In his presentation, he laid out the story, telling what’s happened so far, how we got here, and what the next steps are.

“No, we’re not saying spray foam isn’t safe,” he said in response to a question during the talk. “We’ve made some mistakes and we’re learning.”

Paul Duffy had some tough questions for him, too: “If you hadn’t made those mistakes with the initial analysis, would SPF still have been one of the top three?”

Palmer never really answered the question.

Spray foam contractor Gary Talbott said, “Those of us in the contracting business have suffered financially because of this. We’ve suffered a lot.”

What next?

As things stand now, the DTSC is keeping spray foam on the bad list. SPFA and others have asked them to remove it because of all the mistakes that led to spray foam being listed, but the DTSC seems to have backed itself into a corner and refuses to take what seems to be the most reasonable action.

If they stick to their guns, the spray foam industry will have to complete an Alternatives Analysis. Dr. Duncan told me that this will cost a lot of money and is likely not to provide any worthwhile results.

Also, the three California Assemblymen raised a good point about the Alternatives Analysis:

“How can DTSC require alternatives analysis (AA) of adopted priority products while it is simultaneously conducting its pilot program and has not yet developed tool modules, AA guides, and training workshops for prioritized companies?”

So for now, the battle appears to in a stalemate. Both sides are spending a lot of time and money on a process that in the end will most likely be seen as useless.

Except maybe for those who are opposed to all use of foam insulation. They’ll probably latch onto spray foam’s being put on the bad list and use it to try to shoot down what is actually a pretty good product. If you encounter the argument that spray foam must be bad because the state of California has it on their “bad list” or worse, that they’re going to ban it, learn the truth first.

 

External Resources

California DTSC Safer Consumer Products Program

DTSC Priority Products

SPFA Statement on the DTSC Announcement

ACC Letter to DTSC Director Barbara Lee (pdf)

Also see the links to the workshop transcripts in the article above.

 

Related Articles

Don’t Forget the Science in Building Science

Will Open-Cell Spray Foam Insulation Really Rot Your Roof?

Does Your Spray Foam Insulation Need a Thermal or Ignition Barrier?

All Over the Map — The Imprecision of 24 California HERS Ratings

Stockton Project Demonstrates Huge Home Energy Savings

 

Footnote

1. An odd little tidbit appears on Mr. Palmer’s Zoominfo page. He’s listed as having been the “Wickedness Impediment Opening Manager” at the California Department of Toxic Substances Control at some point in his career. What?! Surely that can’t be a real position. I know California can be strange, but certainly not that strange. Right?

 

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This Post Has 10 Comments

  1. Thanks for a well written
    Thanks for a well written summary, Allison. We still occasionally hear from the "bad science" article regarding PUR foam insulation and GWP that Alex Wilson generated 5 years ago, and you did a nice re-buttal of that. It helps to have your well-reasoned and sourced articles to refer back to. Quite frankly 19 out of 20 customers we have do not focus on issues like these, but a few do, and it helps to have some other impartial but informed content to point them to.

  2. Thanks for a well written
    Thanks for a well written summary, Allison. We still occasionally hear from the “bad science” article regarding PUR foam insulation and GWP that Alex Wilson generated 5 years ago, and you did a nice re-buttal of that. It helps to have your well-reasoned and sourced articles to refer back to. Quite frankly 19 out of 20 customers we have do not focus on issues like these, but a few do, and it helps to have some other impartial but informed content to point them to.

  3. It is telling that all those
    It is telling that all those cited as confident of the safety of MDI and polyisocyanates and critical of any regulations are industry affiliated. ACC is about as credible on chemical safety as the American Petroleum Institute is on global warming. They are paid to protect the industry, period.&nbsp; <br />&nbsp; <br />We’ve had enough bad apples give spray foam a black eye by installing it improperly. Foam is a great tool and there are some situations where it really is the only viable retrofit option. That said, nobody should get sick because they decided to insulate their home. I see the threat of CA regulations as a hammer that will result in action instead of delay. If the end result are regulations to ensure that field-cured foam is installed and applied properly (less risk), or manufacturers put the screws to bad apple contractors, or move towards formulations that are less hazardous to begin with (and thus less risky) we all win.&nbsp; <br />&nbsp; <br />Targeting MDI and polyisocyanates is nothing new. EPA has had a workgroup on this with the industry for years as acute health impacts from truck bed liners, etc. made it clear the potential for harm. Do all installers follow industry best practices and how can we better ensure that? See what is recommended for ventilation and you can get a sense for how things can go very wrong in a home. http://www.epa.gov/oppt/existingchemicals/pubs/actionplans/mdi.html&nbsp; <br />and &nbsp; <br />http://www.epa.gov/oppt/spf/ventilation-guidance.html &nbsp; <br />and NIOSH&nbsp; <br />http://www.cdc.gov/niosh/topics/isocyanates/

  4. just spent the weekend in
    just spent the weekend in Seattle talking to Ken Levenson and the anti foam people and they make a persuasive case. We should talk about this.

  5. In hindsight, as someone who
    In hindsight, as someone who insulated a large addition to a small house with spray foam, I would have reconsidered the design of the addition on my house so that I wouldn’t have had to use such an expensive insulation option. In renovation situations spray foam has it’s place, in large part because the homeowner is backed into that option as even recently built homes weren’t insulated as well as we all know they should have been.&nbsp; <br />&nbsp; <br />In a new construction situation, a good design would mean you wouldn’t have to use spray foam. We’d all be better off leaving the management of hazardous substances to a controlled factory situation than a chaotic job site.

  6. It is telling that all those
    It is telling that all those cited as confident of the safety of MDI and polyisocyanates and critical of any regulations are industry affiliated. ACC is about as credible on chemical safety as the American Petroleum Institute is on global warming. They are paid to protect the industry, period. 
     
    We’ve had enough bad apples give spray foam a black eye by installing it improperly. Foam is a great tool and there are some situations where it really is the only viable retrofit option. That said, nobody should get sick because they decided to insulate their home. I see the threat of CA regulations as a hammer that will result in action instead of delay. If the end result are regulations to ensure that field-cured foam is installed and applied properly (less risk), or manufacturers put the screws to bad apple contractors, or move towards formulations that are less hazardous to begin with (and thus less risky) we all win. 
     
    Targeting MDI and polyisocyanates is nothing new. EPA has had a workgroup on this with the industry for years as acute health impacts from truck bed liners, etc. made it clear the potential for harm. Do all installers follow industry best practices and how can we better ensure that? See what is recommended for ventilation and you can get a sense for how things can go very wrong in a home. http://www.epa.gov/oppt/existingchemicals/pubs/actionplans/mdi.html&nbsp;
    and  
    http://www.epa.gov/oppt/spf/ventilation-guidance.html  
    and NIOSH 
    http://www.cdc.gov/niosh/topics/isocyanates/

  7. just spent the weekend in
    just spent the weekend in Seattle talking to Ken Levenson and the anti foam people and they make a persuasive case. We should talk about this.

  8. In hindsight, as someone who
    In hindsight, as someone who insulated a large addition to a small house with spray foam, I would have reconsidered the design of the addition on my house so that I wouldn’t have had to use such an expensive insulation option. In renovation situations spray foam has it’s place, in large part because the homeowner is backed into that option as even recently built homes weren’t insulated as well as we all know they should have been. 
     
    In a new construction situation, a good design would mean you wouldn’t have to use spray foam. We’d all be better off leaving the management of hazardous substances to a controlled factory situation than a chaotic job site.

  9. Allison,&nbsp; <br /
    Allison,&nbsp; <br />&nbsp; <br />Nice writings as always. I’m not telling you something you do not already know here, but unless professionals practice law they will never absorb the spin on words this chemical industry uses to distract from the truth to avoid liability. Your writings illustrate some of it here. The question is how many picked up on it? It’s law, confusion and deception at it’s best. Lloyd Alter and Ken Levenson know this already. &nbsp; <br />&nbsp; <br />Yes California made errors and yes they should have spent a tad bit more time spell checking what they wrote. It does not dismiss the fact there are many people affected by these chemicals today and this is not limited to just workers of the spray foam industry. &nbsp; <br />&nbsp; <br />Now the common sense approach.. How many young men can keep up their stamina just like a CNC machine? These young men are the machine, the eye’s and ears of the finished product. Now how do you produce a human machine with less than a week of training? Chemical companies which use computerized machines in a laboratory environment make mistakes too and we are suppose to believe what happens in a lab is the same as whats produced in the field? I don’t think so. Now who paid for the studies the chemical giants are providing as their grounds for dismissal of common chemical issues?&nbsp; <br />How many professionals have examined the air quality on their own after installation to determine fact from fiction? &nbsp; <br />&nbsp; <br />Why don’t we look at the chemicals which make up MDI like Benzene, formaldehyde, aniline and the many other toxic compounds that do show up in air quality analysis? Why are those chemicals dismissed? &nbsp; <br />&nbsp; <br />Let’s see the proven facts rather than keeping them under lock and key as an industry trade secret. &nbsp; <br />&nbsp; <br />Was not long ago when cigarettes, formaldehyde and asbestos was good for us too!

  10. Allison, 

    Allison, 
     
    Nice writings as always. I’m not telling you something you do not already know here, but unless professionals practice law they will never absorb the spin on words this chemical industry uses to distract from the truth to avoid liability. Your writings illustrate some of it here. The question is how many picked up on it? It’s law, confusion and deception at it’s best. Lloyd Alter and Ken Levenson know this already.  
     
    Yes California made errors and yes they should have spent a tad bit more time spell checking what they wrote. It does not dismiss the fact there are many people affected by these chemicals today and this is not limited to just workers of the spray foam industry.  
     
    Now the common sense approach.. How many young men can keep up their stamina just like a CNC machine? These young men are the machine, the eye’s and ears of the finished product. Now how do you produce a human machine with less than a week of training? Chemical companies which use computerized machines in a laboratory environment make mistakes too and we are suppose to believe what happens in a lab is the same as whats produced in the field? I don’t think so. Now who paid for the studies the chemical giants are providing as their grounds for dismissal of common chemical issues? 
    How many professionals have examined the air quality on their own after installation to determine fact from fiction?  
     
    Why don’t we look at the chemicals which make up MDI like Benzene, formaldehyde, aniline and the many other toxic compounds that do show up in air quality analysis? Why are those chemicals dismissed?  
     
    Let’s see the proven facts rather than keeping them under lock and key as an industry trade secret.  
     
    Was not long ago when cigarettes, formaldehyde and asbestos was good for us too!

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