wood

Q&A Session Off to a Strong Start / Free Pro Advice 4 Green Homes

The ThinkDwell Blog's Pro Advice Q&A Session has had some great response from readers, with the following questions shedding light on some common issues that puzzle home owners trying to go green:

 

Q: Wood Frame vs. Straw Bale Home Construction: Which is More Sustainable?
Q: How Can I Go Green in My Garden? Sustainable/Green Landscaping

Q: What is LEED Exactly?

Q: Re: Chemical-Free Mold Remediation, Why is Bleach Safe to Use?

Q: How Much Does a Green Home Cost?

 

Follow the links to read more on these subjects in the ThinkDwell Blog. Everyone is invited to participate and receive answers that help you go green at home today.You can ask a question by placing a comment under a relevant post, under the Q&A Session post, or by emailing ThinkDwell at pubs@thinkdwell.com.

This article was submitted by ThinkDwell. If you have questions or comments regarding this article, please feel free to contact us through our website: http://www.thinkdwell.com

 


PCBC or PCBS

PCBC or PCBS
My wonderful experience at the largest building conference on the west coast.

I have been waiting for this day to come for about 5 years now, ever since I was introduced to green building, the day when it has hit main stream. This was solidified by the slogan that was hung so nicely in the front of the Moscone Center in San Francisco 2 weeks ago. The banner read “PCBC Power. Forward. Sustain,” this was complemented by an unusual amount of use of the color green, that seemed to be strategically placed through out the venue as a reminder that “hey remember we’re green.” Although I didn’t think for a second that all of the sudden the folks over at PCBC saw the light and truly embraced sustainability, I did think that they were smart enough to at least cover the basic bases.

Once I passed the gigantic (and most likely not very green) sign I waited in line patiently to receive my registration badge. Once it was my turn to complete the self registration process, I walked up to the computer, everything seemed to check out just fine and until I went to hit print. Out came my registration badge with the wonderful slogan written so inspiringly on the top of the page, “Power. Forward. Sustain” and underneath this, my badge printed on 1 of the 6 perforated cards available on the sheet. Talk about starting off on the wrong foot, the PCBC folks took a big swing and some how ended up giving themselves a big ole black eye. Then to add insult to injury there was no paper recycling available anywhere, yes there was plastic and metal recycling and a trash can, but that was it. Now you would think that if you were going to use such a slogan, you would at least cover the most basic of bases, I mean just think how much money they would have saved if they utilized the entire sheet of paper, they could have cut their use by 1/6th.

Anyways back to the construction side of things. As I wandered the floor with my critical eye, I saw many companies talking about and advertising their great green products, or at least using that label. I had the opportunity to grill a few of these companies, but they will remain nameless for their sake. At just about dead center of the venue you could visit the booth that had a great exposed wooden structured that had a sign that talked about how “green” and “natural” the use of wood for construction is. This drew me in to investigate. The first thing I looked for was the FSC logo somewhere, anywhere throughout the display, but to no avail I couldn’t locate it, so I decided to play dumb and ask the representative some questions. I gave him the opportunity to use his prescripted pitch and throughout the whole thing not once did he refer to FSC, until I brought it up. We talked about increased cost to them and ultimately the customer if they were to certify all of their products and yes I agreed that this would increase the cost, but then how the hell can you talk about your products being green. The last time I checked cutting down old growth forests and running tree plantations was not a very green or sustainable thing to do, you’re still destroying the local biodiversity either way.

As I made my way through the rest of the exhibition, I came across a very large lumber and engineered wood supplier, I’m sure it’s a name we in the construction industry can surely can recognize, but once again their identity will be kept secret. Here I followed the same steps, let the rep incriminate himself first and then let them know what’s up, but I was impressed at how much the rep was actually interested in what I was saying, so instead of me grilling him, he was taking this opportunity to learn something from me. He did agree with me that all of the mantra he has been supplied with by corporate very well could be just a little tainted or the truth stretched a bit. I took this as a sign of true interest and gave him some of the “real” information about his company and their practices. We parted ways very nicely as he shook my hand and thanked me for the education.

I repeated my interrogation throughout the day, some were good and some were not so good. Most of the companies that were there have been attending this show year in and year out and slowly but ever so slowly they are starting to shift the conversation. Years ago I would throw out terms like sustainable, VOC and biodegradable and all I get in return is a blank stare. Now I at least get a reaction and there is an attempt to respond to my questions like they are supposed to know what they are talking about. So all in all, PROGRESS is the word. There has been noticeable progress, but yet we are still a ways off where the building industry has changed its ways for good and there is proper education that takes place for everyone within the industry.


RECYCLING 1940'S CABIN

We are rebuilding a 1940's cabin on a lake in Northern Wisconsin, we considered tearing it down but decided it had too much character. Anyway we created a website for people to watch this project, offer advice, trade materials, etc. Check it out, and tell your friends. http://hippyshack.tripod.com


Why did you build with steel when there are greener alternatives?

You are right, steel framing is quite high in embodied energy. We really had a dilemma there. It’s one of those decisions that had to be made at the time of building. As we say in the show, wood is the better alternative, but because we are in earthquake country, we would easily have used as much wood as a conventional builder to provide the structural support required by our building codes. And we really wanted to infill the full length of the walls with bales for the best insulation. Also, steel was inexpensive at the time. The steel package cost me half of what the wood package would have. Now, however, the prices are quite comparable.

We could have done things differently if we had built a single story house in a less earthquake prone area. Then, we could have built what is called a load bearing straw bale house, in which the bales provide the structural strength and the use of wood is kept to interior walls and roof trusses.

My pocketbook and design sense got the better of my environmental concern on that day. When I do it again, I will try to do it better.


Why is it important to use FSC-certified wood?

When building green, we want to get wood that is sustainably harvested and certified by the Forest Stewardship Council. The FSC is a nonprofit organization devoted to encouraging the responsible management of the world's forests. FSC sets high standards that ensure forestry is practiced in an environmentally responsible, socially beneficial, and economically viable way.

Companies that sell timber and forest products seek certification as a way to verify to consumers that they have practiced forestry consistent with FSC standards. To get the FSC stamp of approval, forest operations must meet 57 criteria, including protection of local wildlife, minimal use of chemical pesticides, even the guarantee that loggers can unionize. If a forest makes the grade, its wood products get branded with the FSC logo and a chain of custody number, which allows them to be traced back to their source.

Today FSC-certified woodlands now blanket 15.5 million acres in the U.S., up from a mere 1.4 million in 1995. Internationally, the numbers are even more compelling, with 135 million acres of FSC-approved forest covering the globe. We've got to remember to save the forest for the trees.


Are there green benefits to framing with steel as opposed to wood?

Although using wood wisely for framing is the preferred method in green building, for our home we chose steel because of its strength and span. There are also a number of green advantages to building homes with steel frames, including eliminating a number of toxicity problems for the occupants. Termites are a huge issue in California construction and present health issues. Pest control can be quite toxic. Luckily, termites don’t eat steel so steel doesn't require any chemical treatment at all to prevent against termites or any other wood-destroying insects. So that's just one more chemical we can eliminate from the environment, not just the indoor environment, but the environment for the workers and the framing crews and the people who have their hands on these products every day.

While preventing termite infestation and the toxic fumigation needed to eradicate them, steel-frame homes have another advantage: They're not going to be a breeding ground for mold.


Can I build a foundation out of wood?

Wood foundations consist of load-bearing walls framed with two-inch nominal lumber and sheathed with treated plywood. The walls are designed to withstand backfill and vertical loading. They are supported laterally at the top by the floor system, and at the base by backfill and foundation footing of crushed stone or gravel. The footing distributes the vertical load from the structure to the soil. If detailed and waterproofed correctly, a wooden foundation will break with your logic and actually hold back the earth and water.

Answer excerpted from Eric Corey Freed's column, Ask the Green Architect on greenerbuildings.com.


Doors & Windows