A 3 to 4 inch layer of spf across the attic floor is a good start 1b.
Portion of house no insulation in attic.
Installing an insulation system can drastically reduce energy consumption in your house.
Find a diagram of common air leaks here.
It doesn t matter the climate just start with the safest place that provides the biggest bang for your buck and that is always the attic.
Without insulation attic ducts will get hot in the summer when they need to carry cool air and cold in the winter when they need to transport heated air.
Many homes are leaky and have insufficient insulation in the attic.
However most of the modern homes are designed to be energy efficient themselves and there is no point in installing the system then.
This allows a lot of heat up to the attic.
Before insulating seal any air leaks and make roof and other necessary repairs.
Upon our own inspection we determined that the master bedroom has no insulation in the attic space above our bedroom.
My home inspector did not check the attic above our master bedroom.
Gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless.
There was attic access and it was easy to get to.
The occupied area of the attic will beinsulated and kept warm while the space in back of the walls will not be insula ted.
On top of that depending on your climate zone you can add as much cellulose or fiberglass as you need to achieve anywhere between r 38 and r 60 total 1c.
However in that space part of the attic floor willstill be expo sed.
Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well.
If it is located in a conditioned part of the house also remember to insulate and air seal your attic access.
The attic should always be the first place you add insulation whether you live in florida or fargo.
This is the best way to keep your house cool in the summers while keeping it warm during the winters.