Insulating Attic Without Soffits

How to insulate an attic ceiling with no soffit vent 1.

Insulating attic without soffits.

Mini split ductless air conditioner. Plan to pull up the flooring and layer new insulation on top of the old. It s a standalone unit that s about two feet tall and 18 inches wide and has wheels for mobility. Because the simplest and cheapest way to insulate an attic is to add material to the floor.

This is accomplished by installing insulation to include all of the corners angles and wedges where the attic slope meets the attic floor. You d have to extend or actually reshingle the bottom layer of shingles at the edge. Place the plywood sheets or boards across the rafters in the attic. For homes without soffits or narrow ones the attic can still be very effectively insulated.

A portable air conditioner is the easiest solution for cooling your attic. 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. This gives you access to all parts of the attic. So if you did want to ventilate an attic you could use a type of vent called a drip edge vent which would require a little bit of carpentry.

The only problem is there s no soffits in this house. If i had an older home without soffits i would strongly consider just completely air sealing the attic and adding foam insulation totally removing the need for ventilation. Portable air conditioners do need to be vented to pump the hot air outside.