Frost wall / Guides

Prefab frost-protected shallow foundation insulated form kit
Slab on Grade

Raft slabs - How to build Insulated Frost Protected shallow foundations (FPSF) on problem soils

...wall, and finally the slab floor. Rarely are footings insulated, and depending on how the walls are insulated, the result can be a thermal bridge between the footing and walls or floor. This brings unwanted heat loss, as well as a greater risk of condensation forming on those colder portions of concrete. Alternativel...

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

Insulating below slab-on-grade floors

...frost heave, using dirt to insulate. With a slab-on-grade, the difference is you use 'insulation' to insulate, rather than dirt. This effectively moves the frost line from 4 feet down to just 6 inches, problem solved. Building above grade on a slab can be a much cheaper starting place than a basement, and leads to a ...

Frost in Attics: What causes Attic Ice? How to Fix it?
Roof assemblies - renovation

Why is there frost in my attic? Is ice in roofs a problem & How do I stop it?

...Frost and ice forms in attics when warm, humid air accumulates and condenses on the underside of your roof sheathing. Depending on the temperature, and the insolation (ie. can sun get to the roof) you will have either frost or water collecting. A little bit of frost forming is not unusual after really low nighttime tem...

Slab-on-grade construction technical guide
Slab on Grade

Slab-on-grade technical guide

...wall with much better insulation. By building a slab-on-grade home, you are choosing to substitute foundation walls with above-ground walls. In other words, you are replacing concrete walls with a much more affordable and energy efficient wall assembly. This is why Slab-on-Grade foundations are frequently chosen fo...

Deck Construction, 10 Top Tips for Building Decks
Decks, porches and gazebos

Building a deck ? 10 Tips to make your deck last longer

...frost heave. 'Insulation' does this as well, so laying a rigid foam insulation board down (foam or stone wool) below and around the deck block may reduce the chances of movement from frost heave. Laying down a bed of 3/4" clean crushed stone will also act to prevent frost heave, it just can't have any fines in it becau...

Passive home designer Harold Orr, one of the original high performance homes
Passive solar home design

The principal designer of the house that inspired the global Passivhaus movement reflects on the project that started it all.

...walls. So the wall becomes expensive very quickly. Third you can insulate the wall, install the air / vapour barrier, then strap the wall on the inside with 2x3's. The problem with this is that 2x3's are the same price as 2x4's, and strapping the wall horizontally is more labour intensive than building a double wall....

Heat Recovery Ventilation - Lunos video
HRV and ERV

Lunos ductless air exchanger

...walls, making it the ideal compact HRV unit for reno's and retrofitting . Consequently, there is no need for ductwork or reserving space in your mechanical room for an air change system. Wall sleeve for Lunos © Ecohome Wall sleeve for Lunos © Ecohome These systems are a direct interface between the insi...

Slab-on-grade for Ecohome's upcoming video building guide
Slab on Grade

how to build a slab-on-grade on standard soil

...walls would bear, we installed EPS foam. Slab floors are often built in a way that requires footings and sometimes frost walls to be poured first, with the interior slab floor being poured later once the footing has set. Insulation underneath the footing is often omitted with this technique, which leads to thermal br...

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

What causes ice dams and how to fix them

...wall where the roof and wall meet. The inside of kitchen cupboards can be a tell-tale sign as well – since the air in kitchens is often more humid and cupboards are closed with little air movement, condensation can form on the walls in the back of cupboards. Whether or not you have indentified an ice damming problem,...

Solar Radiant Heated Floor Slab Kit
Delivery: radiant, forced-air and decentralized

Solar heated radiant floor with radiant heated hot water for a site with problem soil - expansive clay

EcoHome is in the process of building our next demonstration low-energy house , and to do so we have partnered with a company that manufactures frost-protected shallow foundations (slab-on-grade ) that are heated with air rather than liquid. There are many advantages to air-heated radiant floors over hydronic radiant ...

Basement wall insulation
Insulation and soundproofing

Properly insulating basements and concrete slab floors

...walls also varies between below-grade and the parts above. Over a heating season, there will be much more heat loss through above-grade walls than those below. Therefore, with one wall and two rates of heat transfer, this leaves the dilemma of insulating more than you need below, or less than you need above. There is...