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DESIGN ENVIRONMENT

The main principles of green building:


A high performance, energy efficient home may include features like geothermal heating, wind power and solar panels, but these are not the defining features of green living. They come in second, and some you can even do without. A green home starts with being well-designed, well-insulated, and if possible, has glazing oriented to the south for passive heat gain.

Energy efficiency, insulation and orientation:

An efficient and resilient home is one that uses minimal energy to heat, light and run appliances. The biggest draw is almost always heating, so reducing heat requirements is the best way to reduce operational costs.

A house with 60% of its windows facing south (passive solar) may have its heating requirements reduced by as much as 25% for virtually no cost. It is important that it be properly-designed to avoid overheating though, or you will negate any heat savings with air conditioning in the summer.

A well-insulated, well-sealed building envelope is imperative to the performance of your home. No amount of solar panels will compensate for windows and walls that leak heat and moisture.

A reasonably-sized house:

One just can’t stress this enough — a smaller house is a more efficient house. A smaller house means less land to excavate, less materials to manufacture and ship, less space to heat, less space to cool, less taxes to pay, less to clean. And they are always cheaper to buy or build.

It is not suggested you live in a matchbox, but one can easily reduce the national square foot average per person (presently 700) and still live quite comfortably.


A flexible h​ouse:

Our family size will change throughout our lives, and a flexible house is one that has been designed to accomodate that change with as little cost and disruption as possible.You can reduce both the financial and environmental costs of a big renovation by anticipating and designing for that moment right now.

Think about potential layout changes or where a future granny suite would be, and during your build you can run the necessary plumbing and wiring, along with framing future door openings. So when that day comes, rather than a major disruptive renovation, you already have the infrastructure in place to create a new bathroom and kitchen.

This can also be an excellent resale feature, by making it easier for future owners to make those changes themselves.

Using reclaimed and local materials:

By re-using existing building materials and buying locally, you just became part of the green building trend. As we have said, green building starts at the design phase, so you can incorporate these materials into your future build.

Knowing what materials you will use ahead of time can save you some headaches, since you can make any necessary adjustments right away. If you have plans to use old doors for example, or some specific flooring material, you many need to adjust framing or floor heights. Old doors don’t always meet the standard openings and its best to know the exact sizes before you start building.

Designing your green home:

Whether you are designing your home yourself, or having a professional do it, remember the principles we’ve outlined above. Be sure to find a designer or architect that shares your vision, or that will at least allow you to direct the process.

Mechanical systems:

Sadly, a typical sacrifice in home construction is quality mechanical systems. Purchase and install usually come towards the end of construction, and if you're over budget there is a strong temptation to look towards downgrades when you really shouldn't. Your heating and cooling equipment is your comfort delivery system, this is not the place to try and save a dollar. And doing so will also probably cost you more in the long run by being less efficient, and you being less comfortable.

An additional tip - don't have your systems designed by a heating and cooling contractor, have it done by an engineer. Heating contractors typically install over-sized systems to protect themselves from complaints of insufficient heat. The result is a system that starts and stops more frequently, so it never runs at its most efficient rate. Think of that in terms of a car starting and stopping at series of red lights compared to a car that gets all the green lights and goes further at cruising speed - which one uses more gas? And who has the more enjoyable ride? Exactly.

Appliances and electrical:

Don't underestimate the amount of energy that will be consumed by appliances, electronics and lighting. Read the tags on appliances to see what they consume, and look for those that are ENERGY STAR certified. LED lights will save electricity and money, they will also help keep your house cooler in the summer. Incandescent bulbs convert 80% of their energy to heat, so turning on eight 100 watt bulbs is like turning on an 800 watt heater.

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