INSPECTION INSIGHTS/.....

 

Basement Insulation         

Basements can account for 20% - 30% of the heat loss in a house. A “stack” or “chimney” effect is created when cold air enters from the lower portion of the house and warm air is forced through the top portion of the house.

During a visual inspection, it is difficult to fully inspect and determine if any moisture–causing defects exist behind the insulation and finish material.

Batt/Blanket
The two common types of insulation are fiberglass and mineral wool (rock wool), which comes in batts or continuous rolls. Note that the backing paper on batts acts as a vapor barrier and must be placed on the warm side of the wall.

Loose Fill
This insulation can be made from a variety of materials, with texture ranging from fluffy to granular and can be poured or sprayed into place. This type of insulation is not appropriate for below grade applications.

Rigid Foam Board
All board types have a higher insulating value per unit thickness, but the cost is greater. The boards are lightweight and easy to cut, but may be difficult to install in irregular spaces.
Spray Foam

* Icynene is sprayed directly onto the surface or poured into enclosed cavities and expands in place and sets in seconds. It acts as both an air and vapor barrier.
* Urethane is a rigid foam containing fluorocarbons and should not be used in enclosed cavities.

In most jurisdictions it is necessary to place a layer of fire resistant material (gypsum board) over any insulation to reduce harmful gases being emitted in the event of a fire. Check with your local building codes and/or fire department.