What is thermal bridging / Guides

Energy modeling simulation of heat loss through thermal bridging
Efficient home design

What is a thermal bridge and why is it so important to break it?

...thermal bridges: It is not only sensible to address thermal bridging in construction, it is becoming law. Recent revisions to building codes have increased the thermal requirements of building enclosures in many regions, including requiring a thermal break. Contrary to common assumptions, the insulation value...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...what is the best wall system? That also depends on what you are looking for. What is the most durable wall? What is the most energy efficient wall? What is the most soundproof wall? What is the most affordable wall? That is just a short list of things to consider, and despite many people online saying they ha...

Slab on Grade

Finishing the exterior of an insulated slab-on-grade floor

...thermal bridging. What we decided on was plastic straps that passed through the cement board and that were anchored in the concrete. It did hold as planned, though there is more play in it than we ideally would have liked and if we were to do it again we would increase the amount of fasteners. Like many things, this ...

Correctly installed Triple pane south facing windows on Ecohome's Demo House
Windows and doors

Installing doors & windows for the best performance in high efficiency homes, LEED & Passive House

...isk of condensation by keeping window perimeters warmer. The added benefit that isn't always considered is comfort. Thermal bridging and poor quality windows can make it quite unpleasant to be near exterior walls on the really cold days. How window placement effects thermal bridging Thermal bridging around window...

Ice dams on roofs & how to fix them
Roof assemblies - renovation

What causes ice dams and how to fix them

...is is an indication that you have a thermal bridging problem. What causes ice dams? Thermal bridging through walls: many older homes have insufficient insulation, particularly at junctions where the roof and walls meet. This problem is most notable with low-sloped roofs and short overhangs. As heat is transferred...

Basement wall insulation
Insulation and soundproofing

Properly insulating basements and concrete slab floors

...is leaves the dilemma of insulating more than you need below, or less than you need above. There is the option of beefing up insulation at the level above grade; however, this is a less common building technique. To be truly effective, it would need to be done on the exterior of the wall to prevent thermal bridging. ...

Off grid, passively heated and cooled house in the Gatineau Hills, Que
Off-grid and Net-Zero Housing

Off grid living blog, part 2: passively heated, this house in Quebec aims for LEED certification

...is is how they went about it. This is the second piece in a blog series written by Craig Anderson as he documents the design and construction of an off-grid LEED Gold passively-heated home. See post 1 of the off-grid homes blog here . or post 3 in the off-grid homes blog here . This off-grid home design began with ...

Dense-packed cellulose wall insulation
Wall assemblies - new construction

Dense-packed cellulose insulation wall systems

...is today. The concern of cellulose in wall cavities settling is probably the biggest misconception, though it is one that originates legitimately because that's what used to happen when it was blown into walls loosely, as it presently is in ceilings. Cellulose in walls is now under pressure so it cannot settle, maint...

Concrete, wood and steel structures compared - Timber Frame wins!
Materials and resources

How wood structures compare to steel and concrete for Carbon Footprint

...is much lighter by volume than both concrete and steel, it is easy to work with and very adaptable on site. It is durable, results in less thermal bridging than its counterparts and easily incorporates prefabricated elements. Its structural performance is very high and its compressive strength is similar to that of con...

Tips for finding a reliable green home builder
How to Find Qualified Green Building Professionals

How to choose a home-building contractor

...What do you do to avoid thermal bridging in walls? What are your preferred types of insulation? Which type of wall assembly do you recommend? What is the most important feature in a home that affects energy efficiency? Why do many basements smell mouldy? The answers you receive will quickly indicate the typ...

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

How to design for thermal comfort in a home

...is less risk of condensation and moisture damage to window frames and wall assemblies. Air leakage causes uncomfortable drafts , but it also allows moisture to pass through walls and condense on cold surfaces inside the walls. Airtight homes are more thermally comfortable, more durable and they cost less to operate. ...