Blog » energy efficiency

OK, so, we use a lot of energy. It takes energy to make energy. It takes energy to transport fuel, it takes energy to make the vehicles and devices that transport fuel, it takes energy to turn fuel into energy and it takes energy to distribute energy and fuel. Energy is also wasted all along the path. This article looks at 9 reasons why it's not OK to waste energy.

A good time to do an exterior insulation retrofit is when it’s time to replace the siding or cladding. The best time is to do it when it’s time to replace the siding AND the windows. The best time to replace windows is when the siding needs to be replaced. Cladding, windows, roof. Replacement time means improvement time. Timing is everything. Not just for deferred maintenance, but also for the owner’s monthly budget.

As the demand for housing continues to grow, it is more important than ever to prioritize energy efficiency and sustainability in residential construction and renovation. Whole house energy retrofits play a crucial role in meeting these goals, while also addressing the need for resiliency in the face of climate change and upcoming regulatory changes.

This year marks the second season of This Must Be The Place- The Building Science Podcast. Shawna has welcomed a number of women to the table for thoughtful, engaging conversation in all areas of the sector. Listen to how they inspire change and innovation to help create better building practices, policy, and guidelines that impact energy efficiency.

Natural Resources Canada (NRCan) delivers the EnerGuide Rating System (ERS). Nearly all energy conservation and energy efficiency programs and incentives that the government of Canada and many provincial rebate programs use the ERS to benchmark existing energy use and potential savings that can come from improving your home's energy efficiency. The EnerGuide Rating System label shows the energy consumed by your house under standard operating conditions.  

By designing for the future and retrofitting with climate in mind, buildings can be made more resilient and better equipped to handle changing temperature regimes. By taking a holistic approach and considering factors such as climate types, average temperatures, and precipitation, we can ensure that our buildings are not only code-compliant but also energy-efficient and comfortable for their occupants.

It's hard to wrap your head around the amount of number crunching that goes into energy analysis, and how to prioritize your time and effort when working on a project. There are energy modelling tools that can be used that make it easier, but in a lot of cases, the easier the modelling tool is to use, and the less actual, real-world performance testing data you input, the more likely the result will be a ball-park figure that doesn't relate to actual energy usage, or actual heating or cooling loads.

There are lots of horror stories out there about mold, rot, stink, decay, health problems and even death associated with energy efficiency measures and airtight houses. Most of them come from the early days of 'live' experiments where good things were done, with all the right intentions but only half of the concept was in place...house-as-a-system was not the by-word of the late 70s/early 80s homebuilding/renovating world. And in many instances where new horror stories appear, it's pretty obvious to those who are conversant in building science that 'house-as-a-system' is ***still*** not the by-word of the homebuilding/renovating world.X

Training in building science and energy efficiency is essential to moving the house building industry forward into Net Zero Energy, successfully. Many people in our industry do not see the entire value chain. It’s a complicated one – easy to see in this diagram how the home building industry is a hot, fragmented mess of experts and expertise, completely at odds with itself sometimes.

BHE is based on translating the knowledge we have about building science and energy efficiency in housing into a format that is accessible to those already working in the home building industry. Labourers, tradespeople, renovators and contractors, as well as those who are less hands-on but still involved in the industry: office managers, internal sales teams etc. As a set of crafts and trades that really grew into a commodity-based industry only after World War II, housing is still finding its feet as a cohesive industry. The many trades and interests that come together to build a house all have their own silos of expertise. As energy prices and environmental concerns have created the need for energy efficiency measures and green building issues, the fragmentation of the industry has continued. Now not only do we have builders, tradespeople, contractors and inspectors, appraisers and mortgage lenders, but a whole layer of techno-weenie evaluators, assessors, trainers, designers, and consultants (yes, I am wearing my appropriate hats). X