Archive for the ‘Green materials’ Category

Why local metal recycling matters

Tuesday, December 23rd, 2008

This is a guest posts by Dave Bennink, owner of Re-Use Consulting. 

When I started deconstructing buildings in 1993, we certainly made efforts to recycle metals we found at our jobsites (as well as other recyclable materials). The money we made was used for important purposes like company gumball machines or a used jobsite radio to replace the one that was driven over by the forklift (with my Abba cassette tape in it).

Frankly, the $123.45 we collected didn’t compare to the $1,234.56 we received from flooring sales but we did it anyway.

Then China started buying up recycling commodities and the price went through the

Metal recycling pile

roof.  All of the sudden everyone was recycling. They recycled their cans and pie tins, their flashing and pipe, and unfortunately their neighborhood street signs and electrical substation equipment. We had never had so much interest in our jobsites (I mean after we had left for the day). We were even getting ripped off by grannies in electric wheelchairs towing 3 cubic yard metal recycling bins.

When demand increased the scrap prices, supplies steadily rose with it. Local recycling companies bought up scrap and laid out thousands to do so. When the demand for steel suddenly fell so did the price paid, and that amount actually dropped from $300/ton to $20/ton. Our local recyclers were stuck with metal that they couldn’t sell for as much as they bought it for and the lack of demand meant some had months worth of stock on hand. This series of events led to some metal recyclers cutting back and others closing up shop altogether. 

I had a chat with Dave Whitley of Nuprecon and found out that this has also affected contractors.  He said that they were giving building owners a break by lowering their bid price after factoring in the value of the metals found within the building.  When prices suddenly dropped, demolition companies were left ‘out in the cold’.  Whitley also informed me that other markets including even cardboard had experienced similar drops and that it was all caused by our current complex financial problems and demand issues overseas.

What can we do to help?  In many ways the Northwest is a national leader in green building and materials recycling.  When prices were high, we were all benefiting.  So when prices dropped, we shouldn’t allow anyone to be left out in the cold.  They say that for one of us to prosper, we all must prosper.  The recycled commodities market is beginning to recover, and I suggest we look to groups like the Northwest Chapter of the Construction Materials Recycling Association to tell us how we can help and how to avoid problems in the future. 

We have worked hard to make recycling a common practice here in the Northwest, and we can’t allow temporary drops in the price to change that.  So support your local reuse and recycling companies.  They are working everyday to create jobs, preserve natural resources, and save precious energy and they are counting on you to help.

Dave Bennink, Reuse Consulting

Radiant barriers: sucking dollars out of your NW project!

Wednesday, December 17th, 2008

 This is from a series of guest posts by representatives of the Northwest Building Efficiency Center. This post was written by Gary Nordeen. 

Since the 1930s radiant barriers have shown to be beneficial in reducing cooling loads in structures located in hot climates. A radiant barrier is a material, usually aluminum, which is highly reflective and has a low emissivity. A material with low emissivity absorbs little radiant energy.

Radiant barriers are usually installed in attics to reduce radiant heat gains into the attic that are transferred into the living space. Radiant barriers can be installed on

Figure 1

the underside of roof rafters; laid on top of rafters or trusses prior to installing roof sheathing; laid flat on the ceiling insulation; or “chips” of reflective material can be added to the ceiling insulation.

Proper installation of the radiant barrier is important. Refer to Figure 1 at left, courtesy of Florida Solar Energy Center: 

  • Applications #1 or #2 of sheet type radiant barriers are preferred to #3.
  • Dust will accumulate if sheet type radiant bareriers are laid over the ceiling insulation.

  • Chips or multi-layer radiant barriers are acceptable to be installed at location #3

Recently, there has been an effort to market radiant barriers in the Pacific Northwest with unbelievable claims of energy savings. One radiant barrier company has stated that their product can reduce energy bills by more than 50%. In hot southern climates, where radiant barriers work best, energy savings range from 2% to 10%. Tests by Oak Ridge National Laboratories have shown that the percentage reductions for winter heat losses are lower than those for summer heat gains.

Radiant barrier chips

While radiant barriers can reduce cooling costs, houses in the Pacific Northwest consume more energy for heating than for cooling. Before installing a radiant barrier to reduce heating costs, the following issues should be considered:

At times radiant barriers may actually result in higher heating bills.

When the sun is out on cool winter days, it provides some heating of structures by radiant heat transfer through the roof. A radiant barrier will negate some of these gains.

Radiant barriers may create moisture problems.

If placed on top of the ceiling insulation, a radiant barrier will get cold in the winter and may become a surface where moisture laden air escaping from inside the house may condense. This may cause the ceiling insulation to get wet and become less effective.

Investing in additional insulation and better windows, and stopping air leakage are proven methods to reduce your energy use. Be wary of any salesperson making exorbitant claims about reducing your energy bill. As the old saying goes: If it sounds too good to be true, it probably is.

Contact the Northwest Building Efficiency Center at Info@nwBuildings.org if you have questions about energy efficient buildings.

Homes that fit and inspire - Seattle’s Urban Canyon

Wednesday, October 8th, 2008

This post is by Jared Silliker, a new contributor to the Building Green Blog.

Want some inspiration in our current housing crunch? I’ve had the good fortune to tour a couple Central District projects designed and built by the architect/developer duo of Brad Khouri and Graham Black. And the back stories are just as impressive as

Urban Canyon

the finished products.

To start, both Khouri, who runs b9 architects, and Black, owner of gProjects, bicycle to all their projects and strive for designs that integrate with the neighborhood’s character and scale. They are big fans of the design review process, which they say encourages better and more profitable projects.

While Khouri designs efficient and smart use of space for these human-scale homes, Black concentrates on salvaging building materials for reuse. A couple projects, for instance, use reclaimed wood from old Fort Lewis barracks that dates to the 1930s. And Black employs all his own builders in order to maintain quality and pay competitive rates. The final result are modern homes that fit and work–efficient on resources and high on function and style.


And with the market bearing down, the best inspiration may be that the homes are selling. There’s plenty of evidence to build green, but clear market success will most quickly drive more quality sustainable projects.

AIA Seattle is hosting a case study and tour tomorrow at the Urban Canyon (pictured above), Khouri’s and Black’s latest project at 19th and Pine, which is the first 5-Star Built Green multi-family development in Seattle. The Alley House, a Madison Valley urban infill residence seeking LEED Platinum, by Urbanmix and Cascade Built, will also be highlighted. Check out www.aiaseattle.org as space is limited.

More images of ‘net zero’ townhouses underway in Issaquah

Tuesday, September 30th, 2008

After a tumultuous year, the zHome project has started off on a new foot with its Monday groundbreaking. The project is a 10-unit townhome development in the Issaquah Highlands that uses smart design and technology to create all the energy it consumes. It plans have net zero carbon emissions and cut water use by 60 percent.

I first wrote about the project last December here when Noland Homes was the

Courtesy of David Vandervort Architects

builder on the project and planned to develop it at its own cost. A lot has changed since then: namely Noland dropped out and Howland Homes came on (and will develop it at its own cost). But the project has finally broken ground and, as Brad Liljequist, zHome project manager for the city of Issaquah, says in the project’s inaugual blog post (yes it has a blog here) it “takes my breath away a little bit” to be at this stage in the project’s life.

zHome has a nifty Web site that can answer all and any of your questions from what materials are being used to how they’re doing it to how to buy into it. For more information, visit it here.

Courtesy of David Vandervort Architects

This solar panel from the groundbreaking comes wrapped in a bow!

 

 

 

 

 

 

 

The latest rendering

 

 

Greenwash or green-wash? Let’s talk toilet

Friday, September 26th, 2008

Though a necessary part of life, we don’t do much talking about toilets. However, in the last week I’ve been hearing a lot about toilet efficiency, toilet brands and how to test them.

This product could be yours!

So when I got a press release for the Brondell Swash Ecoseat, I wasn’t surprised but rather perplexed. The Ecoseat bills itself as an ”ecofriendly” way to save trees. Rather than flushing 100,000,000 rolls of toilet paper worldwide per day representing 55 million trees each year, the press release says, you can do simply buy this product and wipe all that eco-guilt out of your life.

The product is a battery operated “dual wand seat with an integrated bidet which features adjustable water pressure (for a refreshing feminine and posterior wash) and push button controls.” In other words, it uses water rather than paper to clean you off.

Is it really environmentally friendly or are the company’s claims eco greenwash? In June, the Washington Post carried a story by Blaine Harden about how energy use in Japan is soaring and how one major factor is high tech toilets that “warm one’s bottom, whisk away odors with built-in fans and play water noises.” They also play relaxation music like “Ave Maria.” But they also consume energy at an alarming rate because they are always plugged in. The article says people are also using the toilet more, because it’s a comfortable space. Some even get addicted to it.

Here in the U.S, old fashioned toilets are getting more and more water efficient.

This is what your toilet would look like

Recently at a water conference i attended, Water Expert Roger Van Gelder told attendees that new super efficient systems using 1.0 gallons per flush or less can be just as strong or stronger than older models that used seven gallons. The water use of a toilet doesn’t make it a better toilet and stronger toilet, he said, instead it’s the product’s systems that do the job.

But with all toilets, he said, you have to actually test the toilets to see how well they work. “Anything that you get, you can’t really believe what it says on the box.” 

So how about believing the Swash Ecoseat’s box. It is battery operated so it doesn’t plug into the wall. But it still uses energy. What do you think readers, is it greenwash or a green solution?

This is what LEED platinum looks like

Monday, August 11th, 2008

Wondering what that LEED platinum home looked like? Here are some photos for your entertainment:

this-one.jpg

That’s Sloan Ritchie, the project’s developer, walking into the house.

greenroof.jpg

That’s the pretty green roof outside the master bedroom.

inside.jpg

That’s open house visitors enjoying the living room.

kirei.jpg

This is kirei board, an engineered panel product made from the leftover stalks of the sorghum plant, which is used for food.

arggh1.jpg

Here’s Ritchie with a SIP - a structural insulated panel or polystyrene panel that combines framing, insulation and exterior sheathing in one system. They can be used for roofing, walls or floors over crawl spaces.

The best green products of 2008… but are they really the best?

Tuesday, June 24th, 2008

I have a story in today’s DJC on the year’s 10 best new green products, according to (our kind of competitor) the Sustainable Industries Journal… but were they really the best?

The products range from odd to ordinary, at least in what their function is. Here are three of them:

I’d never heard of the Solar Tracking Skylight by Solar Tracking Skylights rooftop-z.jpgof Chicago but it sure sounds interesting. It’s a self-contained, self-managed skylight with mirrors that move to adapt to the sun’s position. It’s designed to provide light all day, not just when the sun is shining directly above. They’re half the size of typical skylights and customers include Whole Foods, Wal-Mart and the U.S. Military. … and they also look like they came out of a space movie! Yea for space movie products! (If you want to see a video of how it works, visit the Web site at the above link).

Lamberts Channel Glass by Glasfrabriks Lamberts of Bavaria, Germany is a self-supporting column that can be used as interior or exterior walls. They’re nelsonmuseumsmalssmal.jpgmade from 40 percent recycled glass and are decidedly pretty, judges said. At left is the product in use at the Nelson Atkins Museum of Art in Kansas City, Mo. One judge, Clark Brockman of Sera Architects in Portland, said, “Let’s just face it, it’s sexy.”

Sexy. Usually a word NOT associated with green building products (or projects for that matter). But judge for yourself from the picture at left….

Then there’s local winner Salvaged Hardwood Tables by Urban Hardwoods of Seattle. Urban Hardwoods has salvaged 3,000 trees, that would urbansmall.jpghave otherwise ended up being wasted,  and turned the wood into tables. This one was salvaged from Kirkland and costs $4,200 for the tabletop.

But like it or not, these are all the opinions of a handful of (granted knowledgeable) judges. Perhaps you too are a judge in disguise. If so, tell me about the best green product not on the list. Post your comments below.

SI assures us all the products are real green products rather than examples of great greenwashing. But how well green products work is also controversial. For more on that topic, click the tag green materials below and read the entry ‘Green products not so great, says Gehry specifier,’ and comments.

Other blog posts on this at Jetson Green and Portland Architecture.

These are three of the 10. To learn about the other seven, read my story here

Getting lost in “green” messages

Thursday, June 12th, 2008

subway-small.jpgI’ve spent the last week in Boston and New York, riding subways that people in the Pacific Northwest can only dream about.

But while riding those subways (which are largely, at least in NYC, responsible for why the average person’s carbon footprint is so low) it struck me that green is becoming mainstream so quickly, it’s becoming many things to many different people. And often, because the message isn’t defined, it gets lost.

It happens in the definition of a “green building:” really, does LEED make a building green? What about a regular building that uses Energy Star appliances and PVC-free paint…. that’s in the middle of nowhere?

It happens in materials: FSC wood… is it really green to use South American or European wood, ship it to Asia to be milled and ship it back to use in your Seattle home?

And in happens in advertisements. Take the subway in NYC for example. On one train, overhead signs urged riders to recycle newspapers in recycling bins. On another, overhead signs begged newspaper readers to just throw their papers away to keep the subway clean. If you’re going to advocate one message, which is more important? Recycling or cleanliness?

greenwashing-cartoon-2.JPGThat example represents the entire green movement. There are so many different messages out there, it’s easy to get lost. Especially if you’re a new “convert,” it’s really easy to be misled. Sometimes it’s intentional “greenwashing,” sometimes it’s just plain confusing.

For Earth Day this year, I got a press release from Horizon Air about how flying between Portland and Seattle was more eco-friendly than driving. I got another from Fairmont Hotels and Resorts and Lexus Hybrid Living on eco-friendly luxury suites in San Francisco and Washington, D.C., that are “the ultimate cosmopolitan experience for environmentally aware travelers.” Guests get organic towels, robes and free use of the Lexus LS 600h hybrid.

Is that really green? Who’s to say. The truth is it’s such a new field and word that just about anything can be spun the right way. And often, what really is “green” just gets lost in the spinning.

To learn more about greenwashing, click the tab below. To see what consumers think about “green” products or share your reviews, check out this site.

Ten misconceptions about solar hot water

Monday, May 19th, 2008

My friends over at the Seattlepi.com’s reader blog Building Seattle Green have got a great new post today by Mati Bishop on solar hot water. To check it out, click here now.

solar-hotwater-reesize.jpgToo often in the Pacific Northwest, solar technology is discounted because, well, people think we don’t have any sun. But that “fact” doesn’t always ring true. For example, with the solar battery that powers the BigBelly trash compactor (see here for a past story I did on the topic) the battery actually works better with the ambient light available when it’s cloudy out, rather than in direct sunlight.

Check out the Building Seattle Green post. It’s worth reading to learn other mythbusting solar facts! 

As for the photo, I can’t say if that’s a myth or not. It’s a farmer named Ma Yanjun of Qiqiao village in Shaanxi province China who, according to Ananova, built a solar powered water heater out of beer bottles and hosepipes. I guess anything’s possible!
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Green products not so great, says Gehry specifier

Friday, April 25th, 2008

Often, I long for your comments though they never come. In response to my post below on the Stranger’s not so pleasant coverage of Seattle City Hall, I got more than I bargained for from Anne Whitacre.

bookWhitacre is a senior associate at Gehry Partners in Los Angeles, though she spent 30 years working in Seattle at firms like ZGF and NBBJ. She’s a full-time specifier there and deals with products, both green and not green, on a daily basis.

Whitacre isn’t against green buildings or green products as a whole… rather her qualm is how a product’s ”greenness” often trumps whether it actually is a good product.

Among her comments in her very informative letter to me, she said, “I simply do not understand the bally-hooing of LEED buildings. From a design professional’s perspective, there are “good” buildings and there are “bad” buildings, and the procuring of a LEED rating does not automatically turn a “bad” building into a “good” one.”

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