House With No Attic Insulation

Because the simplest and cheapest way to insulate an attic is to add material to the floor.

House with no attic insulation. Adding insulation where it was never designed to go mainly the walls of an old house causes a host of problems all due to the moisture issues it creates. 10 of your home heating bill costs stem from uninsulated floors. Plan to pull up the flooring and layer new insulation on top of the old. There are no one size fits all solutions.

Warm spaces have less condensation risk than colder space so when you add insulation to the attic floor you re intentionally blocking some of that heat from keeping the attic warm. Attic ventilation and you do have an attic so to speak i ll get to that in a minute is a science that is unique to the architecture of each building. If outside is brick one option is to rip out the interior plaster walls put extruded polystyrene rigid board insulation and re frame drywall. For example on a hip roof ridge vent is usually not the way to go on most hip roofs there simply isn t enough ridge length.

But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. Many homes are leaky and have insufficient insulation in the attic. Based on my experience with houses built in 1950 s you should be 100 sure there is no insulation. Not unless previous owners added some.

Here are just a few of the highlights.