Feb 05, 2012


VOC Off Gassing - It's as bad as it sounds Featured

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Off gassing jarsThe old adage "an ounce of prevention is worth a pound of cure" applies when referring to indoor air quality. So remember to look for low VOC or VOC free choices when purchasing common household products. Currently there’s no standard labeling system for VOCs, but many manufacturers offer a low or no VOC option. Formaldehyde, one of the best known VOCs, is surprisingly common in new home construction. Luckily, it happens to be one of the few indoor air pollutants that can be readily measured. Air monitoring is one approach that can help prevent adverse effects of exposure to volatile organic compounds.


One study on formaldehyde and VOC levels utilizing air monitoring found that "the levels of volatile organic compounds (VOCs) in new homes decreased markedly after 1 year". This is due primarily to the off-gassing process which diminishes over time. If you don't happen to have expensive air monitoring equipment lying around, you could always use your sense of smell. Just remember that not all VOCs are detectable with the human nose.


Preventing Exposure to VOCs


Identify, and if possible, remove the source. If it’s not possible to remove, reduce exposure by using a low or no VOC sealant on surfaces and other furnishings emitting chemicals. You should always increase ventilation during the period of VOC off gassing and consider using an air purifier.


Potentially hazardous products often have warnings aimed at reducing exposure to the user. Many people, however, don't bother to read the label before every use (guilty as charged). If a label states to use the product in a well-ventilated area, go outdoors, open the windows or work in areas equipped with an exhaust fan. You should always provide the maximum amount of clean air flow possible. This rule applies when you are using petroleum-based products, fuels, hydraulic fluids, paint, thinners, cleaning agents and the like. This also applies to your new carpet, new car, air fresheners and a variety of other surprising sources.


Other preventative measures


Safely disposing of empty containers or those with very little product remaining. - Using products according to the manufacturer’s directions. - Buying in quantities that you may consume quickly to prevent additional exposure from seepage or vapors, like paint VOCs, that may escape from poorly sealed containers. - Keeping products out of the reach of children and pets. - Making every effort to utilize integrated pest management techniques when using pesticides. - Never mixing products unless directed on the label. - Choosing low VOC or VOC free products.



www.epa.gov

www.pubmed.gov


12 comments

  • Comment Link student grants Sunday, 26 September 2010 15:09 posted by student grants

    I’ve recently started a blog, the information you provide on this site has helped me tremendously. Thank you for all of your time & work.

  • Comment Link Phil Wednesday, 29 September 2010 07:05 posted by Phil

    After exposure to mold, I developed a condition called Multiple Chemical Sensitivity. I bought a new home 18 months ago and spend over 20,000 in "air purification." At first the home was unbearable to me. Paint fumes, carpet, and who-knows-what had neurological effects. I was told that after the house off-gassed (1 year) it would be fine. I'm now sicker, I have become more chemically sensitive, and I'm running out of options. Do you know of someone who could come in and assess the air quality to determine what VOC's are present? Everything has been guesswork and I've wasted lots of money on "environmental experts." This is a very real and serious issue and I appreciate you putting it out there.

  • Comment Link Eco Evaluator Thursday, 07 October 2010 10:01 posted by Eco Evaluator

    Phil,

    Sorry to hear about your condition. As you know VOC's pose a real risk to your health and well being. It looks like you are in Florida which is a bit out of our network of certified professionals. So, we are unable to make a recommendation but perhaps the following insights may help.

    Based on our research, air monitors and subsequent lab testing are very expensive and time consuming. Some of the best options include the removal of items (such as carpets, new curtains, etc.) or the application of "no VOC" coatings over VOC emitting surfaces (like paint and varnish). If you bought new furniture, like a couch, for your new home, consider having it steam cleaned (hot as possible) to expedite the release of chemicals. Also take a serious look at your cleaners and any air fresheners you may be using. Many of these are filled with VOCs and continue to reduce your indoor air quality. Another option would be to increase the ventilation in your home. Your air filter may circulate and clean the air inside the home, but ventilation (like opening windows or utilizing exhaust fans) will allow for the indoor air pollution to escape more rapidly. Although this will lower your energy efficiency, under the circumstances, it may be warranted.

    If you find your situation unbearable and end up having to move, look into the EPA program called Indoor airPLUS. It's a label earned by a home builder after they meet strict standards during the construction of a new home. I am assuming that your home didn't have that label. It's really a big selling point for builders that want to show they are building green homes.

  • Comment Link private student loan Saturday, 04 December 2010 05:04 posted by private student loan

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  • Comment Link caregiver Tuesday, 07 December 2010 10:18 posted by caregiver

    Terrific work! This is the type of information that should be shared around the web. Shame on the search engines for not positioning this post higher!

  • Comment Link Dan Zeeff Thursday, 03 March 2011 17:28 posted by Dan Zeeff

    I've been in the drywall and building trades for 30 years, but only recently been involved and interested in this subject. Chinese drywall, of course, but I'm learning much more is involved since recently becoming involved with a high end contractor who is very concerned with these matters. I think as a specialized contractor I need to learn as much as possible about this subject.

  • Comment Link Julia Wednesday, 18 May 2011 12:04 posted by Julia

    Great post, but I didn't see any information about the different filters out there. Air purifiers that claim to be getting rid of VOCs need to have a large amount of activated carbon, the only effective filter media to adsorb chemicals, gases, odors, vapors and fumes. HEPA is great for particles, but won't remove VOCs.
    The more carbon, the more VOCs will be removed from the air.
    Some companies specialize in air purifiers for people affected by Multiple Chemical Sensitivity, or MCS.

  • Comment Link angiehillman Sunday, 14 August 2011 18:27 posted by angiehillman

    I have been tramautized by mold exposure and new carpets installed over the last 18 months. I first moved into a old renovated apt. bldg last april (2010). New carpet was installed before the day i moved in and then 3 months later, after 3 people visited me and got very sick, I discovered I had mold. I was told by my docs to get out ASAP. So i spent that night in a hotel and moved out two weeks later. I have moved 46 times since then and mostly spent time living in a hotel while all my mold contaminated stuff was put in storage. I finally bought a new home 2 months ago--only to discover that the entire carpeted area 225 sq ft was covered in cat pee. it was so bad that i had to remove baseboards, carpet, drywall and even the subfloor was wet. When the carpet was removed, it released a massive amount of dust and dander that I could not breathe. Desperate to get my carpet replaced and my life in order, I had new carpet put in. But a month later, I have been very sick with allergy type symptoms and worst of all the inability to concentrate. This is impacting my ability to work greatly. i have had so much stress related to all this, I have felt like I was losing my mind. This past weekend, I cleaned the carpet with a very strong cleaner and then used a carpet seal and carpet lock otu to block the off gassing. It was such hard work and i did it myself, which caused such an allergic reaction i have barely been able to function. My last stop before ripping out all the new carpet to get hardwoods is to get an air purifier. Any suggestions for that?? There are a lot out there and I'm stumped as far as what to get. Thanks.

  • Comment Link Ed with EcoEvaluator Monday, 15 August 2011 16:30 posted by Ed with EcoEvaluator

    Angie,

    We’re sorry to hear you’re having so much difficulty. Unfortunately, this is not an uncommon story. Concentrated doses of the volatile organic compounds (VOCs) and certain types of mold can cause a multitude of symptoms including respiratory issues, headaches, nose and throat irritation as well as nausea.

    In fact, people are becoming increasingly troubled by mold, radon, carbon monoxide and VOCs in their homes. Studies from the Environmental Protection Agency show that levels of air pollution inside the home are often 2 to 5 times higher than outdoor levels.


    If you decide to keep the carpet you currently have you have a couple of options that may reduce the off guessing. One of the easiest ways to minimize exposure is through proper ventilation. Try keeping doors and windows open as often as possible and use ceiling or house fans to keep the air moving. This should help to reduce your immediate exposure. Also, some sources indicate that steam cleaning has the potential to reduce off gassing by quickening the off gassing process.

    If you are considering completely replacing your carpet but are unsure of which carpet to buy, you can look for the “green label” of the Carpet and Rug Institute (CRI).

    If you’re thinking about a change from carpet to hardwood, be sure to look for Forest Stewardship Council (FSC) certified sources http://www.ecoevaluator.com/environment/organizations/forest-stewardship-council.html Patronizing FSC certified goods helps to prohibit the conversion of natural forests and the use of hazardous pesticides, while at the same time showing your respect for the rights of indigenous people all over the world who are still living in forested areas.

  • Comment Link Angie Tuesday, 16 August 2011 08:16 posted by Angie

    I checked out your link http://www.ecoevaluator.com/environment/organizations/forest-stewardship-council.html, but could not find anything about where to purchase. Do you know of a source in Atlanta or is it a product that's carried anywhere and I just need to look for hte FSC certified source seal of approval (if they have one). Someone suggested I get laminate flooring rather than hardwoods if I have to replace the carpet. What are your thoughts on that?

  • Comment Link Ed with Eco Evaluator Tuesday, 16 August 2011 11:40 posted by Ed with Eco Evaluator

    Angie,

    Here is the list of different suppliers of FSC certified products http://www.fscus.org/productsearch/retailers/?category=1 They have a lot of national retailers that carry FSC certified products. As far as the laminate flooring vs. hardwood floors we haven't done any extensive research on that and both present challenges. Hardwood generally takes a long time to grow but many laminate floors can have an off gassing period. Be sure to look for products that are VOC free. Also, you may be able to find no VOC products from Home Depot in the Eco Options line.

  • Comment Link Joan Tuesday, 16 August 2011 19:38 posted by Joan

    Very good post. I'm in the residential cleaning business and have given much thought to switching to chemical free cleaning. I believe it will benefit not only the home owner but also the cleaning tech. Although it will be costlier, in the long run it will be well worth it. Your post has given me the impetus to go forward.

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