House With No Attic Insulation

Plan to pull up the flooring and layer new insulation on top of the old.

House with no attic insulation.

Many homes are leaky and have insufficient insulation in the attic. If outside is brick one option is to rip out the interior plaster walls put extruded polystyrene rigid board insulation and re frame drywall. Insulating basement walls or slab foundation can reduce heating costs by10 to 20. This allows a lot of heat up to the attic.

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. 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. Wall insulation can reduce a home s heat loss by 67 while attic insulation can lead to a 40 decrease in heating and cooling costs. Because the simplest and cheapest way to insulate an attic is to add material to the floor.

Here are just a few of the highlights. Not unless previous owners added some. 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. There are no one size fits all solutions.

Based on my experience with houses built in 1950 s you should be 100 sure there is no insulation.