cob-bread-oven / Green Building & Sustainable Home Renovation Information & Advice

It is easy to look at the R value rating of a material and assume that our entire wall assembly matches it uniformly. But when you factor in the thermal bridges caused by framing materials and any discontinuities in the wall structure, you can also quickly deduce that this is not the case. It doesn't take expensive equ...

The Zoetrope is a vertical-axis wind turbine made from common materials. Many of the materials can be found at your local hardware store and the rest can purchased online or made at home, for the truly industrious amongst us.  The Zoetrope was conceived when renewable energy advocate, Mike Marohn commissioned Applied S...

With their house about three kilometers from the nearest paved road and hydro pole, so truly off-grid, Craig Anderson and  France-Pascale Ménard had no option but to go for extreme efficiency in design, product selection and construction. Craig and France-Pascale went for LEED certification through the CaGBC, and this ...

New blowing agents for spray foam coming by the end of 2017 Foam insulation is a petroleum-based product and nothing will change that. But that was never the biggest problem the 'eco' building community had with foam insulation; the main issue was the inclusion of chemicals with a global warming potential (GWP) that wa...

Framing lumber choices for building homes Framing lumber, also known as structural wood, is the grade of wood used for house framing (studs, Larsen Trusses for Double-Stud walls, headers, roof trusses and floor joists, etc. as well as in timber frame construction). Its technical characteristics make it perfectly suitab...

LEED Platinum V4 Wall Design: Building Science  The wall we designed for the Edelweiss house, Canada's first LEED Platinum V4 Home is best categorized as a 'REMOTE' wall, a high performance building envelope developed by the Cold Climate Housing Research Centre in Alaska. REMOTE stands for 'Residential Exterior Membr...

Insulation slows the rate of heat transfer, helping keep homes warmer in winter and cooler in summer. How well-insulated your home is will determine how comfortable it is and how much you will spend on energy for heating and cooling, and in some respects, how durable it will be. The transfer of heat (or heat loss) occu...

Home Insulation - how much is too much? A House can definitely be under-insulated (millions of homes throughout the United States and Canada have this very problem), but can a home have too much insulation? In short, yes it can. In reality, there is an optimal balance between the up-front cost of insulation and the lon...

1. Make a realistic budget and schedule: This is, without a doubt, the starting point to a successful build - don’t underestimate the time and money it will take to complete a build or renovation. Even professional contractors tend to underestimate the costs and duration of a project. Get advice from multiple professio...

With the recent COP26 Global Climate Change Conference in Glasgow, Scotland, all the world's countries are talking carbon emissions amidst a certain amount of finger-pointing. In the closing minutes as the sustainable world watched the much applauded COP26 conference and a host of private jets were revving up their eng...

Vapor Barrier + Air-Con = Damp Moldy Walls So here's a little known fact that most HVAC installers won't tell a potential new client for central air; Polyethylene vapor barriers in combination with air conditioning in homes can rot walls because of the condensation they may cause. This is why if you have a newer home w...