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.
Insulate floor in conditioned attic.
Standard batts and high performance batts can be used under floors.
The insulation reduces wildly high temperature spikes and so the attic becomes a conditioned part of the home like any other room.
If the air distribution is in the attic space then consider insulating the rafters to move the distribution into the conditioned space.
The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof.
Creating an air barrier between the conditioned space and the cavity insulation is still required but keeping this barrier continuous tends to be easier.
In unfinished attic spaces insulate between and over the floor joists to seal off living spaces below.
1a attic access door.
You also said humidity inside the house is higher than outdoors.
Since the ac supply vents are all in the house and the roof receives nearly all the solar heat load how is this the case.
Where i live outdoor dew point is 74 78f.
When insulating floors over unheated basements or crawl spaces faced products should be used and vapor retarders should face heated areas and be in.
Allison you said a conditioned attic is cooler with floor insulation than without.
Floor insulation can also help with sound transmission so it can make sense to use it even between two conditioned spaces.
The superattic system from dr.
Start with the attic floor.
Since this approach treats the area behind the kneewalls as conditioned space any floor sheathing in the attic space doesn t have to be removed to gain access to the joist bays below and.
Energy efficiency there are numerous ways in which an unvented attic insulated with spray foam can reduce a home s energy consumption.
Stop using your attic for storage.