1. Why heat the wall?

There are a number of reasons why it is a good idea. In cold climates it moves the dew point to the outside of your structure

which is a good thing . From an economical point of view; since insulation is needed in the wall structure and concrete is needed for

structural support, The addition of pex tubing into the structure is an easy economical alternative to the more expensive process of

running radiant floor heating. Radiant heat disperses in all directions and is the most comfortable form of heat. When the walls are

heated you are literally wrapping yourself in comfort. No drafts, no frozen windows and no cold corners in your building structure.

 

2. Will you lose more energy because the wall is heated? (NO)

When you go to the mall and enter at the main entrance where is the heat or the cool?

At the main entrance, to counter act the temperature outside.

In a commercial or residential building, the hot air ducts are always by the outer walls where it is cool.

As long as the heat or cold is applied on the interior side, it is the amount of insulation on the exterior that determines the heat or cold lose

rate. The amount of energy used is relational to the comfort level of the individuals living in the structure.

Radiant heat is more comfortable for inhabitants resulting in lower thermostat temperatures.

Concrete is a mass that stores energy resulting in a more stable environment on those days with lower or higher exterior temperatures.

 

3. What materials can I use to make the cavity on the interior side?

There are many choices for the paneling on the interior if you wish to leave it on.

Magnesium oxide board

Water proof drywall

Cement board

If you wish to remove it later after the pour to save cost, you can use regular plywood.