Installing basement insulation is especially important today in this time of soaring energy costs. Having basement insulation means you not only gain additional usable space in your building, but you also reduce heat loss through improperly insulated walls and ceilings.

There are three methods of insulating a basement: from the exterior, the interior, or through insulated blocks or walls when building the foundation. If you find it hard to navigate a basement insulation list, look for the basement insulation information as well as basement insulation provider information. Consider these options to help you along.

1. Employ exterior basement insulation.

2. Use basement insulation on the interior walls.

3. Build your foundation with basement insulation within the walls.

Action Steps
The best contacts and resources to help you get it done

Insulate the exterior with exterior basement insulation

Create a moisture barrier on the outside of the masonry or concrete.

I recommend: Both Owens Corning and Dow Building Systems manufacture rigid foam insulation you can use on the exterior of the basement wall. This exterior basement insulation comes in a "fan-fold" configuration, which allows for easy installation. This helps to create a moisture barrier as well as increases the R-value of the basement wall.

Insulate the interior walls with interior basement insulation

Seal the inside of the basement walls to keep in the heat by keep out the moisture.

I recommend: Find basement insulation for the interior walls with OvrX Manufacturing and Total Basement Finishing. Both have rigid foam panels for the interior walls to help not only provide a moisture barrier and help retain the heat, but also finish the walls. More traditional finishing includes batt fiberglass insulation.

Use insulated blocks for basement insulation

An insulated foundation helps to retain the heat and keep out water.

I recommend: Two companies that manufacture insulated blocks are Superior Walls and Seaway Wall Distributing. Insulated blocks help create effective basement insulation. The walls are impenetrable by moisture and have a good R-value. If you combine these walls with insulation on the interior wall, and on the exterior, you will not lose heat through the basement.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Using a combination of systems can create an efficient basement. Another system for basement that is useful for basement insulation is spray foam that when applied to low ceilings, can provide a good R-value without sacrificing headroom.