Reams have been written about green building from scratch, and renovations that are essentially from scratch (like gut-jobs and pop-tops). Checklists and wish-lists of eco-friendly building features and renovation practices abound, including the USGBC’s ReGreen guidelines and my own Sustainable Staging article, but what does a sustainable renovation actually look like?

This isn’t a trivial question. Reimagining existing suburban neighborhoods (as in the current ReBurbia contest from Dwell and Inhabitat, deadline for entry is Friday July 31st) is a crucial step toward building more sustainable cities. Furthermore, decreasing the environmental footprint of our existing housing stock is critical if we’re going to tackle the  anthropogenic climate change crisis. (Our buildings are currently estimated to be responsible for 35% of North American greenhouse gas emissions, with about 20% of emissions coming from home energy use.)

There’s also another factor at work. Many, perhaps most, of us North Americans purchased our current homes with a single phase of our lives in mind, intending to move from house to house as our lives changed, with return-on-investment meaning a simple extrapolation from point-of-purchase to point-of-resale. The current economic heebie-jeebies mean we have a new frame of reference. We’re thinking harder about operating costs now, and return-on-investment has come to include the payback period for installation of energy- and water-saving devices. Many of us will be living in our homes for considerably longer periods than expected. It’s no longer desirable or acceptable to treat our dwellings as disposable commodities – if it ever was.

So, in this series of posts, I’ll round up some of the most inspirational eco-reno case studies available online, ones that fit a handful of criteria. A crucial renovation goal will have to be active conservation of resources – which means doing that energy audit and implementing the auditor’s suggestions for improving your home’s insulation, but also means going deeper with energy & water efficiency measures, and when possible planning to add microgeneration to the mix. Renovating sustainably also requires minimizing our use of materials by reusing and recycling whatever materials we safely can from our existing site, and by not increasing the home’s square footage but instead using smart design principles (like those covered by Sarah Susanka’s Not-So-Big books and website) to meet our needs. We also need to renovate our homes with an eye for suitability for lifetime use, which means both durability* and timelessness, and easy & (relatively) inexpensive customization & alteration of colour and texture. I think it’s especially important to show strategies that work in cold climates, and that can be implemented a little at a time.

* Here’s a thought-provoking discussion of the pros and cons of durability in building materials.

My favorite case study that I’ve seen online (via JetsonGreen) to date is a Boulder, Colorado 1960s-era split-level, with a similar floorplan to the suburban 1970s model I grew up in, and all the changes they made are doable on a limited budget, in several stages, over time. Here’s a fairly complete list of what they did, gleaned from following all the links and studying the photos:

• not popping the top allowed renovation on a much lower budget
• the altered roofline appears to include rainwater/greywater collection as future option
• improved envelope with new windows and icynene insulation
• improved HVAC, plumbing, wiring, and lighting
• new metal siding and exterior stucco
  
• removed some interior walls to open the floorplan – but did not gut the home and start over
• (urea-formaldehyde free?) cabinetry from Ikea
• Forbo’s Marmoleum in kitchen and bathroom
• refinished oak floors with FLOR carpet tiles used as area rugs
• natural wool carpeting in bedrooms? (not sure about this, no pics)
• low-VOC paints and coatings
• recycled glass mosaic tile
• dual-flush, low-flow toilet
• Energy Star appliances
• In the photos and video tour linked from the article, the front-yard relandscaping hasn’t been completed. I’d expect that they’re doing permaculture, and probably facing the concrete planters with reclaimed brick to match the rest of the home.

JetsonGreen also profiled a more ambitious (LEED Platinum!) green gut-renovation of an 1959 home in Portland, Oregon, including geothermal and solar PV, and moving an internal staircase. As part of the renovation, they replaced the windows, reinsulated, added an air exchanger, and used FSC-certified wood and Energy Star appliances. (I’m pretty sure those are Bedrock’s Blazestone recycled-glass tile used as the kitchen backsplash. Yum.) LEED-for-Homes-certified renos are almost always going to be gut jobs, since they need to have their outer envelope exposed from either the outside or inside to meet LEED’s stringent documentation requirements, and it’s often easiest to do both. But, as Preston writes, this house offers some great lessons:

Just look at the before and after photos of this green home and you’ll see a couple critical renovation strategies: (1) get rid of water-sucking grass without making your landscaping look crazy, and (2) keep the same size and scale of your home rather than building it into a monstrosity.

Green Building Advisor also profiles similar LEED-certified green renovations from time to time, like this gut renovation of a 19th-century home in Ann Arbor, Michigan. For this renovation, the team reinsulated, replaced windows with argon-filled low-e models and exterior siding with fiber-cement siding, and installed a ground-source heat pump and a tankless hot water heater. A small addition was built using ICF blocks, and the lot was relandscaped using permeable paving and rain and vegetable gardens.  I found the reuse of wood (salvaged from walls removed during the reno) to build the new floating staircase really inspiring.

But it really isn’t necessary to gut-renovate a home in order to do a deep energy retrofit. I was fortunate to see a local renovation of a 1949 stucco bungalow typical of many of Edmonton’s inner-ring postwar suburbs on the 2009 Eco-Solar Home Tour, and the owners have also documented their renovations year-by-year online. To summarize what they did:

• installed geothermal heat pump, and relandscaped
• replaced aging water heater with efficient solar (not tankless) model
• installed heat recovery ventilator
• improved envelope with argon-filled vinyl windows, new doors, blown-in cellulose insulation, new roof, draftstopping membrane
• LED lighting in backyard that runs off a solar panel on the detached garage

Also via Green Building Advisor, this is a 1970s ranch home in Boulder, Colorado that has undergone a deep energy retrofit and the addition of solar PV and hot water on the roof to create a net-zero-energy home. Impressive.

Finally, I’d like to call attention to the Humphrey House blog from Chicago, Illinois. The La Fleurs have been gradually renovating their 1912 Craftsman bungalow to an eco-envy inducing state, without sacrificing its historic character (swoon) or overspending, have done most of the work themselves,and have blogged every step of the way. Their home now features tubular skylights, salvaged interior doors and appliances, water-efficient fixtures, low-VOC paints and stains, Zodiaq recycled-content kitchen counters, soy-foam insulation, a tankless water heater, and an air recirculation system (a complete list of their green features as of last Sept is in this post). Their current project is relandscaping their backyard to include a veggie garden, reclaimed-concrete pavers, compost area, and more rain barrels. Oh, and do you notice what’s not in the list? Expensive big-ticket items like solar PV or hot water, or geothermal heating.

Now that’s inspirational.

What eco-renovations are you planning for your home?

A collage of photos I took at my favorite sidestage sessions of EFMF'08.

The Edmonton Folk Music Festival is already one of the greenest events on Edmonton’s packed summer festival calendar. Here are some ideas for things to put in your backpack to make it even greener, inspired in part by UK site ecotopia’s green festival kit designed for multiday campout events like Glastonbury. (If you’re heading to a multiday campout festival, may I suggest this more exhaustive checklist?). I suggest visiting a combination of Carbon Environmental Boutique, Earth’s General Store, and our local MEC outlet to get all of these items while supporting our local economy and avoiding the extra carbon footprint of shipping from across the Pond.

- windup LED flashlight – if I was headed to a campout I’d consider making this a flashlight/radio.
- a solar charger for your cell phone and camera: ecotopia have the Freeloader Solar Charger in their kit.
- a large stainless-steel refillable mug, thermos, or water bottle
- cutlery set or chopstick set
- refillable toothbrush (Preserve or another)
- natural/biodegradable wipes (Tushies), tissues, menstrual pads (NatraCare), lip balm, toothpaste (Kingfisher), sunscreen, bug repellent – and shampoo and deodorant if you’re camping, too

plus the usual:
- tickets, ID, cash, cards
- cell phone, camera
- MP3 player. book, magazine for down time
- umbrella, shoes that can get wet and muddy, emergency rain gear
- sun hat, sunglasses
- tarp (or collapsible tent if you’re at the top of the hill), tentpegs, location marker
- chair
- programme
- notepad, pen, highlighter
- comb
- first aid kit (esp with kids), advil, pepto bismol
- food and drink in a small cooler

You know it’s going to be hot, for at least part of the day, so I’m planning to try this to restyle a tshirt while I’m on early morning tarp lineup duty, since all I’ll need to pack is my scissors (and a needle and thread just in case).

Detail of one of the upcycled bulletin boards I've made. Read on to learn how.

Lately, I’ve been inspired by cork. Why, you may ask?

Well, I found a huge, huge stash of wine corks at the fabulous ReUse Centre run by the City of Edmonton. Nearly half of them were those horrible plastic-and-foam abominations – which is a terrible shame, since making wine corks is both a traditional employer and a sustainable industry, without which the unique cork oak woodland ecosystem would be irreparably damaged. Contrary to rumour, cork is not going extinct: making wine corks or cork flooring actually prevents the extinction of cork oaks. So, I wanted to repurpose the old wine corks in a way that would be functional, while celebrating their traditional purpose and history.

I’ve also been trying to think of a good way to upcycle the dated, disposable ‘art’ that’s readily available at any charity shop or thrift store (The ones pictured below all came from Goodwill).

Consequently I’ve been working on a line of upcycled cork items for the home, which will be available for sale locally and through my Etsy shop (in the Quirks N Corks section). Here are instructions for how to make a couple of different styles of upcycled corkboards. (more…)

School’s out, and summer vacation is upon us. If you’re like me, you’re trying to think of good ways to keep your kids entertained. How about these summer eco-activities?

1. Enrol your kids in summer camps and classes for budding naturalists, like those offered at Edmonton’s Devonian Botanic Garden or John Janzen Nature Centre. My daughter was at camp at the DBG in the rain this week and LOVED it.

2. Plant a fruit tree or vegetable garden together: you’ll be growing memories and your own food. Yes, many garden centres and some farmers’ markets still have transplants available if you didn’t get it together to start from seed. This year, we’ve planted corn, tomatoes, cucumbers, and a pumpkin plant in the sunny back corner of our yard.

3. Set up rain barrels and a composter – kids especially love composting with worms. Here are two sets of instructions for how to make your own inexpensive vermicomposter.

4. Build a solar oven from an old pizza box, then cook something fun in it, like cookies or pita-bread pizzas.

5. Spend a rainy day choosing old clothes, toys and books to donate, then choosing more age-appropriate ones at a second-hand store or the library. Or, organize a swapping party with friends.

6. Collect a bunch of plastic bags, then laminate them to make a tough, cool fabric for lunch and tote bags: there are good tutorials archived at Etsy Labs and on eclipse.etsy.com’s myspace page. I’d suggest doing this outdoors if possible, to minimize any exposure to fumes from the softened plastic.

7. Make art from your trash: www.resourcefulschools.org have lots of great craft ideas for reusing household garbage before it hits the recycle bin. The ReUse Centre is also a great spot to collect reuseables for arts and crafts. Here are some other great recycled kids’ crafts roundups: Alberta Egg Producers’ egg carton roundup; Craft Jr’s recycled craft roundup; makeandtakes’ earth day craft roundup; Family Fun’s Recycled Crafts Contest; and the wonderful blogs Fun In The Making and The Long Thread.

8. Another great rainy-day project with little kids: make some home-made green cleaners and test them out. Preschoolers love to role-play, so give them their own spray bottles full of water with a splash of vinegar, and let them wash off their toys, the windows, or the (unwaxed) kitchen floor. If you don’t have any homemade cleaner recipes handy, the Women’s Voices For The Earth “Green Clean Party” website is a great resource.

9. Plan a road trip to a number of local U-picks and farm stands.

10. Mix up some organic play-dough using the following recipe. (If you don’t need it to be gluten-free, substitute wheat flour for the corn starch and rice flour.)

Gluten-Free Play Dough (adapted from http://www.glutenfreeforum.com/index.php?showtopic=22445)

3/4 cup rice flour
3/4 cup corn starch
1/2 cup salt
2 tsp. cream of tartar
1 cup hot water
1 tsp. cooking oil
food colouring – use lots to make the colours vibrant

Mix all ingredients together in saucepan until smooth, then place on low heat, stirring constantly with a silicone spatula for at least 5 minutes (10 minutes if recipe is doubled, about 15 minutes if tripled) or until it forms a ball. Remember to scrape the bottom of the pot as you stir!

Remove from heat, let cool for 10 minutes. Scoop into a large bowl, add at least 1/4 cup more rice flour, and 1/4 cup more corn starch, knead until well mixed and no longer sticky. (The kneading can be done partway in a food processor – or can be a project for your child, if you have extra flour and cornstarch (it’ll be messy!).) If it gets too dry, add a few drops of water. If it’s too sticky, add more rice flour and corn starch in equal amounts.

Store in airtight container.

For enough for a Kindergarten class (probably 10 kids can play with it at a time), I triple the recipe (which uses a whole 500g package of corn starch). You can also put all your ingredients in at the start, but I find it harder to get a dough of consistent texture when I do this.