Adding Insulation To Interior Walls

In some cases the cost of adding insulation may exceed the cost of energy needed to heat or cool it.

Adding insulation to interior walls.

Many solid walls including double brick walls see figure 7 1 have a small cavity generally less than 25 mm 1 in which is a drainage plane that collects and drains water out of the wall. Retrofit wall insulation is a debatable subject because there is no single right answer for all homes and homeowners. With a small hole and a pump you can insulate your existing walls with minimum fuss. Insulation in house exterior walls is one of the primary defenses against heat and energy loss.

The grade of batting will vary depending on the wall that you re insulating. Interior basement wall insulation has the following advantages. You can achieve better thermal performance in your attic by adding an additional layer of insulation. Only a cost benefit analysis in relation to your own situation can help you arrive at the right answer.

Almost any insulation type can. It s possible of course to install batts between the horizontal strapping if you want to do that type of fussy work although it would be hard with 1x3s. There are various grades of insulating batting for different locations in the house so you ll need a different insulation for interior exterior attic or basement walls. It is much less expensive to install than exterior insulation for existing buildings.

Most communities have building codes that require a minimum amount of insulation in a house s exterior walls and ceiling. Insulating interior walls isn. The only option is to add insulation to the exterior or to the interior. Unfortunately however builders didn t insulate the walls of most homes built before the 1980s.

Achieving greater r values in exterior walls in exterior walls add insulating sheathing to achieve a greater r value in your wall system. The r value of the batt measures the thermal resistance so the higher the r value the more effectively. Never insulate these cavities or plug their drain holes. Conserve room area relative to installing insulation on the interior.

Most mooney walls use blown in insulation so that you get added r value from the depth of the horizontal interior strapping. Choose fiberglass insulation batting. Fiberglass is a great way to insulate an existing wall. So if your house was built before insulating walls became standard you can potentially save a great deal of energy by insulating.

While fiberglass often comes in batts it does come in loose fill form as well making it easy to install without tearing open any walls. Interior wall insulation in an old house. In an existing home adding insulation to the exterior of the basement walls is impractical.