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Posts Tagged ‘Green Building’

The Grande Finale – an Energy Audit & HERS Score

Monday, October 26th, 2009

My friend, Alva Morrison, has been in the weatherization industry for many years, working for the state of NM helping families in need tighten up their homes with insulation, caulking and funding. As energy audits got popular for the general public, his natural next step was to become an Energy Rater. Special training and equipment is needed for this job, which entails sealing up a house, running air through it, analyzing air leakage through computer software and offering recommendations.

When my construction was done, Alva and I decided to do an energy audit. Instead of guesswork, I wanted documentation of my energy savings were and how I could make improvements to further save.

A blower door test determines energy usage. Alva determined the volume of the house, then we talked about construction details. He plugged that information into his software, then we sealed up the windows and exterior doors, leaving the interior doors open for maximum air flow.

He installed the blower in the kitchen door. blower door_3631 The red canvas was sealed all the way around to make the door air-tight. The blower was plugged into his laptop, then turned on to create air movement, which was registered in the software. We looked for areas where air was coming in. Alva caulked a few old window frames, and rechecked the figures.

We were surprised at some of the results and recommendations. Here are his comments:

“Nan’s house is a great example of what can be done to turn a pretty average house, built to code a couple of decades ago, into a modern energy-efficient home. If built as is today, it would exceed qualification for the USEPA Energy Star certification, even though many of the walls still have 2×4 insulation in a 2×6 wall. The main factor driving the house’s lean performance is a thick blanket of attic insulation. But the solar hot water and the balmy sunroom, with a thick adobe wall to catch and hold the heat, provide solid backing. Add to that a refrigerator, which squeezes kilowatts until they scream, and you have a working person’s house to take us all through the next century of global warming both economically and comfortably. All these things were added to the house by Nan at moderate expense.

“Analyzing possible improvements was very interesting. Tearing off sheetrock and re-insulating the walls seemed like it should be a no-brainer. But when we ran it through the computer, it only showed a savings of around $25 a year- not much reward for all that trouble. The moral is, heat goes up, not sideways.

“However, we found another weaker spot in the building’s ‘heating envelope’: the uninsulated foundation. A quick rework of the house through the energy rating software showed that digging a barrier of four inch rigid foam in around the perimeter of the foundation would return $175 a year – and that?s if the cost of wood and gas stays the same (don’t hold your breath for that!). Get out your shovel, Nan!”

As you can see, an energy audit gives you a lot of information on how to improve your home. I had him calculate a HERS (Home Energy Rating System) score, because I wanted to be able to show others the entire process.

The number of a HERS score is based on the International Energy Conservation Code (IECC), which is 100. My score was 88, meaning my house is 12% more efficient than the code. The lower your number, the more efficient your home is. When I make improvements, Alva can plug that information into his software, re-analyze the results and give me new recommendations

Many municipalities, including Taos, are beginning to require HERS scores on new construction. I highly recommend an audit, and, speaking as a RealtorR, I use them as effective marketing tools for homes. Buyers can see current efficiency and how it can be improved. There are fewer surprises and disappointments after purchase.

Food has been coming out of the greenhouse year-round. Due to some unanticipated condensation problems and failing flashing around one skylight, the greenhouse is not in full use. There is no soil in the bed yet, but I have been successfully growing in containers. This picture is my tomato garden on Jan 31, 2009. Once the construction issues are resolved, I will have achieved my goal of a true food-and-heat-producing solar greenhouse.

Find a certified local Energy Rater through RESNET – Residential Services Energy Network http://www.resnet.us

The entire remodel with more details and pictures is on my website: Solar Retrofit 2007 http://www.nanfischer.com/remodel1.html

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Eco-friendly, Passive Solar Ranch Remodels, 1 & 2

Monday, September 21st, 2009

When everyone moves to Taos, they want to buy an old adobe home on an acre of irrigated land. I was no different. I searched for a house for three years. Some homes were perfect, but just out of my price range, some transactions fell through, and the perfect three-acre piece of land needed an expensive 1/4 mile long driveway through a swamp.

I stumbled across my current home in the newspaper in December 1998. It was nothing what I was looking for – 1800 sq ft of frame ranch on .87 acres of sagebrush – but it had three bedrooms, two bathrooms, a studio space and incredible mountain views. Mariah Rd mt views 2The biggest selling points, though, were the two covered porches (north and south) and the established flower gardens, strawberry patch and apple tree. It was in my price range, and the transaction did not fall through, so it was mine in January of 1999.

Do you remember my advice from last week? Don’t move in until the work is done! I hadn’t forgotten, so I shelled out one more months’ rent and upgraded my new home from afar.

I painted the walls with BioShield natural paint. I bought five gallon buckets of white and tinted them. The price was comparable to five gallons of toxic paint, so money could not keep me from creating a healthy home. I replaced the dark brown, cat-smelly carpet in the living room and bedroom with an oak Upofloor brand floating floor with a non-toxic finish.

While the contractors and I beautified my new digs, I watched the winter sun.

My observations showed that the winter sun drenched windowless walls. I was so in love with the porches, gardens and views that I hadn’t noticed!Mariah Rd 3 Common to Taos, picture windows face north and northeast to the mountain views. Very beautiful, but very cold! I knew then that my next project would be installing windows on the sunny side.

The house was oriented SE to SW, with the sunny side facing southwest. In a perfect solar world, a home should have an east-west orientation with the long wall facing south. This collects the most sun for maximum heat collection. You can have a variation of 15 degrees from true south, but up to 45 is acceptable. My orientation was ‘acceptable.’

That summer, I found a local warehouse of hundreds of wood windows recycled from a company that had gone out of business. I had measured my interior walls for available space and chose windows as close to the maximum size as possible.

In early October, just in time for winter, my new southwest facing windows were installed! Mariah Rd se 2While we had the walls open, we beefed up the insulation where it was thinning and sagging.

Over the following winter, I continued to watch the sun bathe the house inside and out.

The huge room my daughters shared was a two-car garage now enclosed in a previous remodel. The sunny side was mostly blank wall with two narrow windows across the top. I hired a builder friend to put in a glass door, and a large window on one side and a trombe wall on the other side.

A trombe wall is a window installed over a wall of thermal mass (concrete, adobe, water). Vents into the house are placed at top and bottom. As the sun heats the wall, warm air moves into the house through the top vent, and cooler air replaces it to be heated and moved back inside via convection currents.Trombe wallIt is an effective way to use solar energy without having the sun directly in the house, if you don’t want to place a window to unwanted views, or if you want privacy.

The large window materialized, and the trombe wall did not (long, irrelevant story), but the solar energy I did harvest warmed the room during the day. It also hit the concrete slab and radiated a bit at night. This was not high-tech, but it served its purpose to cut the daytime heating down for that dark room.

Meanwhile, I observed the sun for several years. Plans for a major remodel percolated slowly and deliciously like fine coffee, and my restless, latent architect went to work with pencil, eraser and graph paper.

(Click for more information on trombe walls, Bioshield paint and Upofloor.)

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Passive Solar Post & Beam Home

Monday, September 14th, 2009

My first home purchase in 1985 was a summer ‘camp.’ A retired couple from Florida spent their summers in Lee, NH on a wooded acre on the Lamprey River. Their camp was a 22′ travel trailer with a 12′x18′ living room added onto the south side. They were tired of traveling back and forth, and decided to settle in Florida year-round, so they sold, and I bought, their camp.

We finalized our transaction in early October, and I desperately and quickly needed to winterize it. This was my first experience with remodeling, but I got to put into play some of the carpentry I had learned the year before.

I hired a carpenter friend to take care of the rotting roof decking and build a frame for insulation on the north side of the trailer. Then I hired a less expensive high school kid to help me insulate the frameJenkins Lane 1and crawl underneath to insulate the floor, tacking chicken wire over it to hold it in place. Now I was ready for winter, but I knew I was not going to live in this summer set-up forever.

While I was working on the roof, I caught the view of the lazy Lamprey River. I decided I’d have to build a second story on my dream home to catch the view. Just then I realized an unseen bonus of the property. The river was to the south, so I had solar orientation and views! Not many people can say that!

Jenkins Lane 6Over the winter, I watched the sun carefully. I charted its course through my living room windows, and as naturally as your heart beats, I designed a passive solar home.

I tried various floor plans, but came back to the same design over and over, because the principles of solar energy do not change. The winter weather patterns of northern New England do not change, either, unfortunately. I caught the most sun and retained the most heat with large south facing windows, small east and west windows, and a fairly closed in north wall. I took advantage of the cooling breezes off the river by placing casement windows opening south in east and west walls, and adding north and south doors to move that cool air through the house.

When I felt I had a good design, I talked to several contractors and finally hired a man who trained at The Shelter Institute in Bath, Maine. We built a post and beam house of native materials.Jenkins Lane 2a It was super insulated with double framing and Tyvek, but today, Shelter uses SIPs (Structural Insulated Panels, ‘a high performance panelized building system. SIPs create an extremely well insulated and air tight building envelope. An efficient building envelope is a critical component in an effectively integrated green building.’)

We started in September, and in January, it was complete enough to move in (advice: don’t ever move into a home before it’s done!). It was well-insulated and sported top-notch double pane windows, and my first impression was, ‘There’s no air in here! It’s too tight!’ I’d achieved my goal of not letting heat get out, but fresh air could not get in, either. Since then, I have learned about air exchangers, and this was the perfect situation for one. More about that later.

The following winter, I took a road trip out west. As I was driving across southern California and Arizona, I was amazed and thrilled with the endless sun!palo verde The idealist in me wondered why there were no solar power plants. This was unheard of back then (1987) unlike talk of it today. Just as that question crossed my mind, I came upon the Palo Verde Nuclear Generating Station fifty miles west of Phoenix on I-10. In my naivete, I was appalled and angered.?

I was determined to solarize the world!

Fast forward to 1999, and I was raising two girls in Taos in a rambling 1964 ranch house.

(Click for more info on The Shelter Institute and SIPs)

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Solar Energy Is Not New

Monday, August 24th, 2009

Greetings to all you energy conscious, eco-minded folks! I hope you are ready to read about solar energy and green building! I’d like to start with a little background, though, so you can see:

  • Solar has been around for a long time.
  • Energy efficiency is not trendy.
  • I’m a credible source.

Solar energy is not new. It has been around for as long as the sun! Did you ever notice that the cliff dwellings of indigenous peoples, such as the Anasazi, face south? Hohokam-cliff-dwelling-Montezuma-Castle Over a thousand years ago, people understood the power of the sun. They built their dwellings facing south to capture the sun’s winter warmth. The rocks absorbed the heat and released it slowly after dark. Cliff dwellings were also built under overhangs to shade out the high summer sun. sunpower1

The principles of solar energy have not changed in thousands of years, and we use them in building today. As energy prices remain unstable, passive solar and other energy efficient building methods are becoming more important. Many communities, such as Taos, New Mexico, where I live, are putting energy efficient requirements into their building codes.

We must incorporate more renewable energy, because fossil fuels are finite. They will not be here forever to heat and cool our homes, and as they get depleted, prices will rise. We cannot create more oil, natural gas and coal, but the sun, wind and water will always be available.

Fossil fuels also cause political struggle, greed and other negative energies. No one needs to die in the battle for fossil fuels when the sun, wind and water can supply our energy needs.

Your home is the first place to begin saving energy. According to the EPA, buildings in the US account for:

  • 39 percent of total energy use
  • 12 percent of the total water consumption
  • 68 percent of total electricity consumption
  • 38 percent of the carbon dioxide emissions

It is clear that saving energy in your home will have a positive impact on the planet and your wallet. An energy efficient home is also a buffer against fuel price increases.

Energy efficient homes are my passion. I have wanted to be an architect since I was about six years old. I played with Legos more often than Barbie dolls. My passion for homes, solar energy and all things eco drove me to become an EcoBrokerR, a RealtorR specializing in green homes.

I’ve been attracted to the sun since my Lego days, too. Maybe I was an Anasazi in a previous life. Or maybe the large sunny window in my childhood room had an effect on me. My mom turned my room into a greenhouse after I grew up and moved out. Whenever I came home, I slept with geraniums and orchids without complaint.

I was always outdoors, too, running in the woods, catching frogs in the brook, or marveling at pansy faces pansy and the multicolor sheen of Japanese beetles. I knew at a young age I was part of the natural world.

At 25, I got a grounds-keeping job at a large summer resort. I was in my element, working with plants and being outside every day. This was my first experience with a greenhouse, though.

The Wentworth by the Sea in Newcastle, NH had a greenhouse where we started from seed all the plants for the hundreds of lavish flower gardens. We mixed our own potting soils, transplanted seedlings into the ground, mulched, weeded, watered, fertilized, cleaned up in fall and spread composted manure on the beds in November. After eight heavenly months at the Wentworth, I wanted to study horticulture. I enrolled at the University of New Hampshire’s Thompson School of Applied Science for the fall of 1980.

There my solar studies began.

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Film Review: The Greening of Southie

Tuesday, March 31st, 2009

South Boston MapI am a recovering Massachusetts dweller who used to work for a mostly environmental communications firm outside of Boston, so it was under some surprise that I randomly found a documentary playing on the Sundance channel that was entitled “The Greening of Southie“, which basically followed the development of the Maccallen Building in South Boston as it attempted to get an LEED certification of being a green building.

The interesting part of this movie was that it showed the very real issues that are going into green building development – the retraining of the construction workers for materials installation, the cost of travel for green materials and the prohibitive cost of living in green spaces. The most important of all the issues in the film highlighted the cultural differences between the ideology of green development and the army of workers that it effects. From the blue collar bricklayer to the upper middle class management who are trying to collate all of the existing materials together to get LEED certification – which ironically,? it appears to take an entire tree’s worth of paper to be certified as LEED.

My one problem with the project was that instead of installing solar panels on the roof of the building which would make the building much more energy efficient and reduce the tenant’s electrical bills, they installed some sort of roof shrubbery that grows in harsh climate and with minimal effort–but in a stroke of green karma retribution by the end of the film all of the plants had died, and would need to be replanted.

One of the thoughts that I had walking away from this was, yes, I think it is important to use more renewable goods instead of plastic laminate that will spend forever in a landfill after the construction & use process. But the most important thing we can do is to repurpose our existing living spaces using greener solutions – renewable flooring, carpeting, low VOC paints. The film is definatly worth a watch, however, after you do watch it, take a stroll over to the photojournalist essay on urban decay that is happening to the city of Detroit.

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In Search of Sustainable Cities

Monday, December 8th, 2008

Although the environmental movement has been around for years, many communities are just starting to understand the importance of incorporating green practices into urban planning, business practices, and governmental regulations. Large and small cities have started writing green policies into their planning and development codes, and citizens are petitioning to get green initiatives on local ballots.

By demanding the incorporation of green practices and environmental regulations in planning and development decisions, environmental advocates are affecting how sustainability is incorporated in their towns and cities. When looking at cities across America, it’s easy to see that there are plenty of cities who have been “going green” for years (such as Portland, Oregon), and other communities that are just stepping up to the green challenge. Regardless of what cities have done in the past, the fact that so many cities are taking steps to build sustainability into their communities is good for everyone. In an effort to find the greenest places in America, I’ve compiled a list of the greenest American cities using surveys from Country Home, SustainLane, Popular Science and Our Green Cities.

Methodology

Though focused on the same end result (the greenest American city), each of these 4 organizations used different criteria in determining what makes a city green. In compiling their list, Country Home looked at the official energy policies, green power, green buildings, and the availability of fresh, locally grown food in each community. I was disappointed that the Country Home data wasn’t explained in greater detail, but also found it interesting that the cities on their list were comparable to the cities selected by the other organizations.

Popular Science provides the detailed methodology used in determining their top 50 cities, which includes a ranking of sustainable practices in the Electricity, Transportation, Green Living (buildings, construction, development), and Recycling/Green Perspectives of each city. If you’re interested in learning exactly how Popular Science selected their 50 greenest cities, make sure you check out these case studies that break down the methodology used in the survey.

To figure out their list of sustainable cities, Our Green Cities applied their own “Index of Taking Sustainable Cities Seriously,” a checklist that looks at smart growth activities, land usage, transportation, energy policy, pollution, and sustainable projects taking place in each of the cities. If you’re interested in what makes a city sustainable according to Our Green Cities, you can read their definition here.

SustainLane applied an impressively comprehensive method of determining the greenest cities in America, and offers an in-depth explanation of their methodology on their website. Using primary and secondary research to compile their list, SustainLane analyzed data collected from NGOs, city and state governments, federal agencies, their own interviews and surveys, and public data sources (such as academic research and media studies) to find the top green cities in America.

And the Winners Are…

1. Portland, Oregon

2. Greater San Francisco Bay Area, California

3. Seattle, Washington

4. Chicago, Illinois

5. Boston/Cambridge

6. Boulder, Colorado

7. Minneapolis/St. Paul, Minnesota

8. Eugene, Oregon

9. Denver, Colorado

10. Albuquerque, New Mexico

The cities on this list have worked hard to incorporate green building practices, renewable energy sources, and innovative land use policies into their communities. Portland has 35 LEED certified buildings and strict limits on development, while San Francisco has planted fruit trees on city streets and made recycling a top-priority. If you’re interested in learning more about the eco-policies that guide these cities, check out the SustainLane rankings. SustainLane provides a wealth of information on each of their top 50 green cities, and you might just find ideas on how you can get your own city on the list in coming years.

Additional Resources on Sustainable/Green/Eco-Friendly Communities

Center for Sustainable Cities

Sustainable Measures: Sustainable Community Indicator Checklist

Regional Environmental Center Sustainable Cities Project

The Institute for Sustainable Cities

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Green Certifications & Standards

Monday, October 13th, 2008

After 9 months of writing for the Green Buy Guide, it dawned on me today that I’ve never actually defined what it means to be green! All this time I have been posting articles about green goods, green politics and lving a greener life with the assumption that there’s a single definition of what it means to be green, and that everyone reading knows what it is! The irony, of course, is that I don’t even really know what it means to be green – I have a pretty good idea, but when it comes to really promoting green living, I should probably be better informed.

Because of my lack of knowledge in this area, I’ve taken some time to research existing green standards and certifications, and hopefully shine a little light on what it really means when a company calls itself green.

Furniture & Home Furnishings

Green furniture manufacturers can apply for, and be awarded certifications by global not-for-profit organizations concerned with establishing standards for environmentally sustainable furniture production. The Forest Stewardship Council is an independent, non-governmental, not for profit organization established to promote the responsible management of the world?s forests. According to their website:

FSC provides standard setting, trademark assurance and accreditation services for companies and organizations interested in responsible forestry. Products carrying the FSC label are independently certified to assure consumers that they come from forests that are managed to meet the social, economic and ecological needs of present and future generations.

The FSC is supported by all of the top environmental organizations from around the world, has certified businesses in 46 countries, and ensures the companies they certify comply with the highest social and environmental standards on the market. If a company wants to achieve FSC certification, they must conform with the 10 principles and 56 guiding criteria established by the organization. Once a company is certified, they can use the organization’s logos and branding in promoting their products, and sell their goods on the global markets (FSC certification removes all barriers to trading through the WTO).

Appliances, Electronics & Computers

If you’re in search of energy efficient household and business products, look for those that bear the ENERGY STAR label. A joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy, the ENERGY STAR label can be found on 35 product categories including computers, appliances, home construction and electronics. While complying with ENERGY STAR standards is voluntary, the program has proven to be highly successful among both manufacturers and consumers.

In order to promote ENERGY STAR standards, the EPA has allotted funds to remove cost-prohibitive barriers to producing and building energy efficient products and buildings. By lowering the initial costs incurred in the development of green technologies, the ENERGY STAR program enhances the market for energy efficient products and reduces the risks involved in developing efficient products.

Building & Construction

The U.S. Green Building Council (USGBC) is a non-profit organization committed to expanding sustainable building practices, and to advance structures that are environmentally responsible, profitable, and healthy places to live and work. Comprised of 15,000 organizations from the building industry, the USGBC has developed the LEED Rating System to encourage sustainable building and design practices in commercial, governmental and residential construction. Although the LEED Rating System is a voluntary program, federal, state and local governments have started incorporating LEED standards in their new construction and working with LEED certified builders.

Within the building industry, there are organizations who have developed their own sets of green standards. While the development of green standards by industry groups is honorable, there could be conflicts of interest involved if the regulatory body is comprised of those being regulated.? One organization that has created their own standards is The Sustainable Furnishings Council, a non-profit industry association founded to promote sustainable practices among furniture manufacturers, and retailers. Comprised of 250 industry organizations, the Council is launching a public advertising and in-store tagging program for consumers to identify retailers and products which exceed their threshold of sustainability standards.

General Household Products

Green Seal is a non-profit organization that provides science-based environmental certification standards for cleaning products, paints and coatings, lodging properties and other household goods.? To gain certification from Green Seal, a product, service or property must be evaluated at every stage of its production – from the extraction of materials used in production, to the manufacture of the goods, and through the disposal and recycling of waste produced during manufacturing. The federal government’s green procurement program is closely aligned with Green Seal, and works with the organization in identifying and selecting environmentally preferable products.

A Note About Organic

The Organic Label is a whole different kind of green certification that really desearves its own article. I will write about the ins and outs of organic certification and labeling in a future post. If you’re interested in learning more about how the US Department of Agriculture certifies farms, crops, and foods, you can visit their website here.

In researching green standards, certifications and the organizations that oversee the programs, I’ve come to realize that we are still a long way from having a universal definition of what it means to be green. While the EPA is responsible for protecting the environment, they aren’t involved in the wholesale regulation of green goods, services and companies. I’m interested in learning more about this issue, so drop me a line if you are aware of certifications I may have missed or standards that I haven’t listed here.

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