INSULATING BARN FOUNDATION 

QUESTION FROM KEVIN, BROOKLYN, MI

At the farm, I want to insulate the foundation walls of the barn.  I was thinking about using one inch foam board, and the part above grade, would need to be covered with stucco (or something).  I would like to get an estimate to have this done.   

 

 

 

ANSWER FROM THE INSULATION DOCTOR:

We don't do that kind of work and I really don't know of anyone who does. 

However,  I would recommend that you could do it yourself by purchasing some 1" foil-backed Dow board (available at Home Depot or Lowes and comes in a 4x8 sheet -- runs about $16 a sheet).  This is a closed-cell styrofoam.  

You would put the foil to the outside and you can paint it prior to doing it if you wanted to.  It is fairly weather-resistant.  

Normally the method of installing it is to dig a trench around the foundation as deep as the foundation or a minimum of 12".  Place the Dow board against the foundation and backfill with the dirt you originally removed to make the trench.  

You might want to put some type of a cap (probably aluminum) on the open edge of the top to prevent it from picking up moisture such as rain.