Replacing Old Insulation In Attic

If your crawl space or attic insulation is ineffective it can create problems with indoor air quality temperature regulation and heat transfer all of which can affect your roof.

Replacing old insulation in attic.

Plan to pull up the flooring and layer new insulation on top of the old. Just add non faced batt insulation on top of the existing. Because the simplest and cheapest way to insulate an attic is to add material to the floor. Removing the old insulation while most blown in insulation contains cellulose fibers if the house was built and insulated before 1950 the insulation might contain asbestos.

0but olson says in many cases the old insulation does not need to be removed which keeps costs down. If your attic has old or dirty insulation it may be time to get it looked at and replaced. Spray foam insulation is often used in places that are difficult to access and install other types of insulation. 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.

Dirty attic insulation on the other hand could have been the result of pests like rodents and birds that contaminated the insulation which can lead to an unhealthy home. Old attic insulation is often inefficient and could lead to unnecessarily high energy bills. Mold can grow from the warm humid atmosphere in an attic causing hazardous air quality for your home. You should also replace insulation if your roof has had a leak or you suspect water has gotten into the insulation.

Nothing wrong with the old insulation unless it s been disturbed and compressed. We typically work through and seal the attic bypasses with the existing insulation in place olson says. Depending on environmental conditions this insulation can last 80 years or more if installed properly. This is likely the type of insulation you are most familiar with as it is the most common variety used in homes.

Signs it s time to replace insulation in. A typical insulation project can range from 1 500 to 5 000 depending on the size of the project.