Building enclosure / Guides

R values and insulation performance
Efficient home design

Understanding thermal performance

...buildings. Lorne Ricketts is a Building Science Engineer [EIT] with RDH Building Engineering Ltd. and has significant experience with the thermal performance of building enclosures and insulation products. He was the lead investigator on a recent project by RDH which assessed the thermal performance of conventional...

Air barriers are essential to a properly functioning wall system
Air and vapour barriers

What is an air barrier?

...building enclosures that are less forgiving than the air barrier. Where to install an air barrier: A building envelope should only ever have one vapour barrier, and it goes on the warm side of the insulation. Air barriers on the other hand, can be anywhere in the wall assembly and as plentiful as you like. It is hi...

LEED Homes

The 19 LEED for Homes Prerequisites

...building enclosure. 2.2 Durability managemen t: The builder must have a quality management process in place to ensure all durability measures have been successfully met. Sustainable Sites (SS) 1.1 Erosion controls during construction: Prior to construction, design and plan appropriate erosion control measures...

How radiant floors work
Delivery: radiant, forced-air and decentralized

How to design for thermal comfort in a home

...building envelope, no thermal bridging, sealed against air leaks, triple-paned windows, humidity control and properly designed heating, cooling and ventilation equipment , to name a few. Thermal comfort = efficiency and durability: The less heat that is lost through the building enclosure, the warmer it will be, ...

The difference between air barriers and vapour barriers
Air and vapour barriers

The Difference between air barriers and vapor barriers

...Building practices should always be determined by the climate in which you are building. How water vapor travels: There are two main ways moisture will pass through your walls that you should be concerned about — air leakage and vapour diffusion. These are two completely different things, with two completely separa...

Ecohome's Kenogami House 'The Most Resilient Home in North America'
Concept and design

Resilient design features for new home construction

...building envelope and, if possible, incorporating a passive heating strategy and thermal mass inside the building enclosure. Collectively, those measures will help retain heat much longer than conventionally built homes and, hopefully, long enough until the power returns. Keeping a house warm during power outages: ...

Comparing ground source and air source heat pumps
Heating and cooling

Heat Pumps: Ground source geothermal GSHP or air source ASHP, which one is best for heating a home?

...building budget. Also, cutting a big bill in half saves you more money than cutting a small bill in half, and savings is what determines the payback period. Another consideration while prioritizing components of a building budget, is the idea of diverting money away from heat generation and more towards heat retentio...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...building codes, building materials, and how we condition our homes. These changes mean homes are better insulated, more airtight and, most importantly, with better ventilation like HRV's or ERV's or air conditioning. There is also much more understanding of how buildings work and why walls can fail in a home with air c...

Roxul mineral wool batt insulation in LEED Homes
Insulation and soundproofing

Choosing the right insulation: the pros, cons and applications for walls, slabs & basements

...building or renovating a high performance home to a better standard for the dollars spent see here , from the EcoHome Green Building Guides - North America's best green building resource ... To watch 'how to' videos about insulating a Living Green Roof see here