How insulation works / Guides

Thermal image showing where home heat loss is occurring.
Insulation and soundproofing

How insulation works

...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) oc...

Slab on grade for a Passive Solar LEED Home insulated by Rockwool © Ecohome
Insulation and soundproofing

Insulating below slab-on-grade floors

...insulation to use under a slab , It is common to install as little as R5 insulation below slab floors, making that about the weakest point in a building envelope, as walls are generally at least R20 and ceilings R40. There is a misconception that heat rises (hot air rises, but heat travels evenly in all directions) so ...

How much is Too Much Insulation in my Attic or Walls?
Insulation and soundproofing

How much insulation is too much in attics and walls?

...How much loose blown cellulose insulation is too much in an attic? What does ‘diminishing returns’ for insulation mean? It's as simple as this - adding one inch of insulation to a wall that has only one inch of insulation is certainly well worth the investment, in any climate. Adding one inch of insulation to a w...

How to Insulate Exterior Walls from the Outside US Canada Ecohome
Walls and Roofs

The easiest way to insulate walls from the exterior in older homes

...insulation levels and attaching exterior wall insulation successfully. Larsen trusses with cellulose or batt insulation A Larsen truss wall is one with engineered I-joists attached to the outside of a stud or brick wall, which then creates a cavity that can be filled with additional insulation . You can add batt in...

Roxul mineral wool batt insulation in LEED Homes
Insulation and soundproofing

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

...insulation first to learn the basics. Understanding the physics behind how walls work is the key to designing well-insulated, airtight and durable wall systems. Loose fill or dense-packed cellulose insulation Blowing cellulose insulation in roof © Ecohome Recycled Content : 80% to 100% Method and form...

Building science for LEED v4 wall design made easy
Concept and design

Building science for LEED v4 wall design made easy - video

...insulation is installed outside of that. Stud cavities are still insulated with batts, but the majority of insulation is on the outside of the sheathing, this way the vapour control layer is sandwiched between layers of insulation where it can perform best in a wildly varying climate like we have in Canada. There a...

Passive House wall system ; Larsen Trusses & dense-packed cellulose insulation
Wall assemblies - new construction

Larsen truss wall systems with double-stud construction & extra insulation for new homes & energy efficient home renovation

...insulation A Larsen Truss is a type of lightweight & non structural double-stud wall assembly that allows for thicker insulation, is ideal for dense-packed cellulose insulation wall systems and a very high R-value building envelope without many of the problems associated with double-stud wall construction. Not only i...

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

What causes ice dams and how to fix them

...insulation. Wires to melt ice dams are a solution, but hardly an energy efficient one, make this a last resort! Fibrous insulation like cellulose and fiberglass insulation range around R3-4 per inch where spray foam is closer to R6 per inch. The high ecological cost that comes with spray foam stops us from re...

An attic with 'insulating paint' which doesn't insulate
Insulation and soundproofing

Does 'insulating paint' work?

...insulation, why in the world would we put any insulation in our walls at all?" - Jon Eakes Learn all about real insulation here , in the EcoHome Green Building Guides

Is EPS foam eco-friendly? Exterior home insulation rigid foam panels
Insulation and soundproofing

Does plastic foam or Styrofoam insulation have a place in green building?

...insulation’ and honestly, there is rarely one single right answer. In that spirit, I wanted to take a closer look at EPS foam insulation or ‘Styrofoam insulation’ as it is often mistakenly called, which it isn’t. It may seem like splitting hairs, but Styrofoam is a brand name of XPS insulation, it is not EPS insulati...

Frost Heave Prevention Helps Stop Frost Heaving Breaking up Home Foundations
New foundations and slab-on-grade

What causes Frost Heave? Preventing frost heaving is down to good foundation design

...insulation works as well, which involves laying down a sheet of rigid EPS foam insulation (sloped away from the building) for preventing soil wetting, but more importantly that is how to move the frost line. So the real takewaway here, is that water and cold breaks things but insulation and water diversion saves things...