I participated in a tour of REEP House for
Sustainable Living (http://www.reepwaterlooregion.ca/)
on Wednesday night. REEP House is located at 20 Mill Street in Kitchener and should be visited by anyone considering
buying a house or renovating one. The tour is very informative to say the least
and should direct people towards redoing their home in a more responsible way
for the environment and their own health.
It starts outside with native plants in the
garden, driveway paving that is 9 times more water-permeable than standard
interlocking bricks and rain barrels capable of holding 2000 litres which are used
for flushing the toilet and gardening. Besides grey water from the bathroom sink
is collected to flush the toilet. The bathroom includes a 3-litre-toilet with air
suction for superior performance. A water filtration system in the basement treats
the water to eliminate chlorine and other chemicals that harm appliances and
human health. Skin absorbs more chlorine through a shower then we take in from
drinking tap water! The tankless water heater was not new to me as it’s been
around in Europe for a while but it’s new to
Canadians.
For heating they have a high efficiency boiler
and radiant heater as well as a geothermal heat pump which the guide admitted
is more useful in rural areas than in the city where natural gas is still cheap.
The energy recovery ventilator became necessary after the house was sealed off
with thick insulation to regulate moisture and condensation. The programmable
thermostats to regulate the three levels of the house separately are again newish
in Canada
but leave me in disbelief, growing up with a thermostat in every room which I
still miss since I don’t want my bedroom and kitchen as warm as the living
room. The ceiling fans were a neat thing so simple and effective, especially
since they opened up the ceiling of the upper storey into the attic which required
the rising warm air to be spread out throughout the room in the winter.
The house features a variety of windows. Windows
are usually the last thing they recommend people to replace while insulation is
the most important part to save on energy and make a house more liveable. The
reason is that windows are fairly expensive compared to all other eco-friendly,
money-saving (in the long run) adjustments possible in a house – unless of
course the windows are leaking as in our apartment.
For lighting and appliances REEP house
features a lot of options that might seem a bit “too much” (sensor light
switches) and aren’t often necessary, as behaviour changes are cheaper e.g. switch
off the light when you leave a room, or unplug the computer when you are done with
it. Since fluorescent light bulbs contain mercury only LED lights were
installed. They last 50,000 hours, 10 times longer than a CFL bulb and are
getting better too. The initial investment can be up to $100 per light fixture but
it pays off to buy a high quality LED light. The refrigerator was super awesome
as the compressor is on top (instead of underneath or behind) and warm air
rises without reheating the fridge from the outside. The fridge was way more
insulated and can be hooked up to the outdoors to use cold winter air for
cooling. It costs $7 per year to run! Besides there was a steam washing
machine, induction stove and high efficiency dish washer.
For furniture only solid woods were used,
flooring, doors, stairs etc. were built from reclaimed materials, the roof is covered
with recycled polymer shingles (including from used tires) that come with a 50
year guarantee. They are just as good as a steel roof but much better than asphalt
shingles.
Now I mentioned that insulation is the most
important part in a home and we thankfully talked a long time about it. While different
options (rockwool, fibreglass, cellulose, polyurethane foam) were shown and
savings in energy cost calculated REEP house is almost entirely insulated with
that foam. Insulation is measured in R-values and the building code requirement
for new buildings just went from R-20 to R-26 while REEP House has an R-38. Thankfully
the guide emphasized that polyurethane foam is, though best for insulation,
terrible for the environment. It’s a petroleum-based product that causes greenhouse
gases worse than carbon dioxide. So instead of putting in 6 inches of that foam
he recommended not more than 2 inches of foam combined with 4-5 inches of another
option. Rockwool is a by-product of the steel industry, cellulose is recycled
newspaper and some other stuff was recycled too. More care needs to be taken to
not squish these materials when installing them or the insulating effect gets partly
lost but it’s also not as permanent as the foam, if ever repairs on the electric
wiring or plumbing need to be done. Besides, the off-gases from spraying in the
foam are toxic.
The EnerGuide rating of REEP House went
from 49 to 87 after completed renovation. It becomes exponentially harder to
get a higher rating and REEP is still aiming for an 89 with more changes. Our
guide had never seen a house with over 90 though. Even 49 for a century-old
home is more than usual but the previous owner had done some insulation. Most
of the energy savings came from the insulation of the whole house and fixing
air leakages (for example around the windows!).
If we ever consider buying a house I am
sure to be back at REEP house for advice. The energy advisors there also do
home evaluations with regards to the structure of a house and what could be
improved at what cost. Before leaving I exchanged a few words with the guide as
we talked about cycling (of course I cycled there) and home improvements. I
mentioned I can’t understand why Canadians are so slow to catch on with both of
these things and he totally agreed. Good morning, Canada, it’s time for a behaviour change!