Conservation 101: the Compete to Conserve Blog

photo credit: Photocapy

Whether you’re painting or just passing by a recently painted surface, the smell is unforgettable: strong, deep, “chemical-y,” often lasting for days. Paint fumes are caused by something called volatile organic compounds (VOCs), a major source of ozone creation and indoor air pollution. It’s also a major reason I’m willing to live with a wall color I hate longer than anyone should have to. Fortunately, consumer demand for no- and low-VOC paint is growing, and so are the choices.

You can buy no- and low-VOC paints online, at green building suppliers, and at most major paint retailers (including The Home Depot, which began offering its Freshaire Choice line this spring).

How “Natural” Differs from No- or Low-VOC

No- and low-VOC paints fall into two basic categories: those made with synthetic ingredients and those made with natural ingredients such as water, clay, bee’s wax, milk protein, plant oils, and mineral oils. (The latter are often referred to as “natural paints.”)

No-VOC (also called zero-VOC) and low-VOC paints made with synthetic ingredients more closely resemble the performance of traditional polluting paints (durability, consistency) and offer a wider variety of finishes (flat, eggshell, satin, semi-gloss) than natural paints. They cost less than natural paints—typically $30-$40 a gallon compared to $40-$60 or more a gallon—but more than standard paint, which can cost as little as $20 a gallon. You’ll also find no- and low-VOC paints at more retailers.

Why Choose No-VOC over Low-VOC?

The difference between no-VOC and low-VOC is not as simple as you’d think. According to EPA rules, a paint may be labeled no-VOC if it contains less than 5 grams of VOCs per liter. That means some no-VOC paints have no VOCs, but some do.

Kelly Moore’s Enviro-Cote, for example, contains 15 grams of VOCs per liter, even though it’s labeled no-VOC. While I myself don’t consider it a true zero-VOC paint, it’s still quite low when compared to traditional paint base, which can contain 100 grams or more per liter.

Low-VOC paints contain a lower amount of VOCs than traditional paints do (less than 200 grams per liter, under EPA rules). If you’re looking to reduce indoor air pollution, it’s best to go with a no-VOC paint.

Beware: Color Tints Can Add VOCs

Color tints, which you’ll most likely be using, can add even more VOCs, so check that your supplier uses no-VOC tints.

Where to find no- or zero-VOC synthetic paints:

American Formulating and Manufacturing (AFM offfers truly zero-VOC paint)
http://www.afmsafecoat.com

Yolo Colorhouse (truly zero-VOC)
http://www.yolocolorhouse.com

Home Depot (Freshaire Choice line only; truly zero-VOC)
http://freshairechoice.com

Kelly-Moore (Enviro-Cote line only; contains small amounts of VOCs)
http://www.kellymoore.com

Sherwin-Williams (Harmony line only; contains small amounts of VOCs)
http://www.sherwin.com

Benjamin Moore (EcoSpec line only; contains small amounts of VOCs)
http://www.bejaminmoore.com

Where to find natural, nontoxic paints (truly zero-VOC):

Bio Shield
http://www.bioshieldpaint.com

Old Fashioned Milk Paint Company
http://www.milkpaint.com

Anna Sova Luxury Organics
http://www.annasova.com

photo credit: mugley

Fourth of July fireworks spectaculars bring communities together, instill civic pride, and wow us with their bright beauty. They also release fuels, metals, and other toxins that can remain in the air and water sources months later.

The problem, it seems, is that the technology powering most fireworks shows hasn’t changed much since the 1930s. Blends of black powder, oxidizers, metals, and fuels are ignited. Then traces wind up in the air and water and spread long distances.

According to a report in the July 3, 2008, issue of The Los Angeles Times, “concentrations of fine particles, or carbon soot, skyrocket for up to 24 hours after the Independence Day shows, reaching levels as high as those from wildfires.” These fine particles can inflame airways, lodge in the lungs, and trigger breathing problems, coughing, and sore throats. It’s of even more concern for those with heart and respiratory ailments such as asthma. Hospital admissions spike when there are high levels of fine particles in the air.

Also troublesome are heavy metals, such as barium, and fuels, such as perchlorate, that the explosions release. Metals give fireworks their brilliant colors, and perchlorate, a cancer-causing and hormone-altering substance, is used as an oxidizer. (Perchlorate is also used a rocket fuel and is increasingly found in our nations waterways from various sources.)

All this said, it’s hard to give up a good fireworks show. As a nation, we love and expect them as a matter of patriotic duty. That’s why some fireworks boosters, like the Walt Disney Company, which puts on fireworks displays nightly at its theme parks during the summer months, are working with scientists to develop with greener solutions.

Now Disneyland uses ultra-low-smoke and perchlorate-free technologies developed at places such as Los Alamos Labs and DMD Systems. The park also uses an aerial launcher with compressed air so that less soot is released.

Now that the technologies are being developed, why doesn’t everyone use them? The answer, as with many environmentally friendly alternatives, is cost. Today, greener fireworks can cost as much as 10 times standard issue fireworks imported from China.

The hope is that as technologies improve and demand for greener fireworks increases, costs will come down. What you can do as an individual, is educate the people you know about the risks and benefits of traditional fireworks, and ask those who put on the displays (local theme parks, city governments, etc.) to consider new, greener alternatives.

More resources:

Along with Beauty, Fireworks a Beastly Mix of Pollutants, The Los Angeles Times, July 3, 2008
http://www.latimes.com/news/science/environment/la-me-fireworks4-2008jul04,0,3738169,full.story

Pyrotechnic for the Planet, Chemical & Engineering News, June 30, 2008
http://pubs.acs.org/cen/coverstory/86/8626cover.html

Chemists Brew Greener Fireworks, Cnet, July 3, 2008
http://news.cnet.com/8301-11128_3-9983246-54.html?hhTest=1

Eco-Friendly Pyrotechnics, Physorg.com
http://www.physorg.com/news124961394.html

EPA Considers Regulating Perchlorate in Ground Water
http://www.epa.gov/OGWDW/ccl/perchlorate/perchlorate.html