This weekend marks the one
year anniversary of this column – 52 weeks of design principles, advice, maths
(payback period), Neil Diamond tributes, and the tiniest bit of humour. I enjoy
writing, and when Ross Pringle asked me to consider this column I saw it as a
great distraction from my doctoral thesis, and a chance to contribute something
to the health and sustainability of our community.
A lot has happened for me over
the last year: I became a dad, a doctor, and got the certificate of compliance
for our major eco-renovation. Now I am over-educated, under-employed
changer-of-nappies.
To mark this anniversary, I’ve
decided to bring back the column that started it all. Mind you, this is not the
first ETR column, but a column I wrote for the Conservation Comment – which
appears on Mondays in the Chronicle –
in December, 2011. The wise, and dearly departed (to the South Island) Mr.
Pringle recognized something in this piece, and rang with an offer I could not
refuse. The rest, as they say, is history, albeit very recent history.
Before
After
Twenty-Twenty Hindsight: A
Year of Living Lightly on the Planet
We are now over the 12-month
mark of renovating an abandoned villa in Castlecliff into a warm, dry
energy-efficient home. When we set out on this low budget / high performance
retrofit we had no specific numbers in mind for energy savings and waste
reduction. We simply wanted to push the envelope and do the best we could. As
it turns out, our power bill has averaged $20 per month (this includes the
daily line charge) and we have spent a total of $20 in rubbish fees for the
entire year. I’ve come to call this our “20-20 hindsight” but there is no
reason it could not also be a 20-20 vision for others to work toward by the
year 2020. Of course electric rates will increase by then, but that is all the
more reason to invest in efficiency now. (At current rates of annual change,
electric rates will double in under ten years.)
The first Conservation Comment
I wrote in July explained the design principles we employed for our passive
solar renovation that have helped us achieve low energy bills. There is nothing
new or unusual about those principles: solar gain, thermal mass, insulation and
draft proofing. Similarly, there is nothing new or unusual about the design
principles for our approach to resource conservation: reduce, reuse and
recycle. The 3 R’s have helped us reduce the cost and impact of the renovation
project as well as the cost and impact of our day-to-day lives. Here are a few
examples.
While we have followed the New
Zealand Building Code and used treated pine, Braceline Gib, building paper, and
heaps of insulation, there are also areas where we were able to reduce costs
and impacts by reusing materials. Prime examples include the bathtub, vanity,
washtub and toilet in the bathroom, and the bench, sink, mixer, drawers, and
shelves in the kitchen. Perhaps the most visible example is the vintage
Shacklock 501 multi-fuel range that I bought my wife two years ago as a wedding
present and we worked with Building Control to find a way to install safely.
But my personal favorites are the pelmets that I made from old weatherboards
that we removed while re-cladding sections of the exterior. And, like any
builder would, we saved off-cuts to use as dwangs or for other small jobs.
Regarding our household waste
stream, we compost all of the food scraps and even our fish and chips papers.
We save paper to burn in our Shacklock or our outdoor pizza oven (made from an
old wood burner) or to mulch our gardens and fruit trees. We reuse plastic
bread bags and other small non-recyclable plastic containers. Again, there is
nothing special about any of this, other than the fact that we take it
seriously and put out one bag of rubbish for every two months. Perhaps the most
unusual thing we do at all is emphasize the costs savings rather than simply
the environmental benefits. At the end of the day, eco-thrifty living makes
dollars and sense.
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