You can t just insulate the entire rafter bay because you ll trap moisture against the underside of the roof sheathing and cause it rot out.
How to turn attic into a room.
Insert insulation into the cavity between joists the vapor barrier facing the room and not the external wall.
That becomes the thermal barrier.
Measure the headroom in your attic using your measuring tape.
An attic room must measure 10 5 foot at the ridge line and at least 50 percent of the finished space must be 7 5 foot tall or more.
Embrace the angled walls and convert your attic into a master suite guest room office or a custom hideaway.
My own old house was blessed with an unfinished attic when we bought it and i knew someday we would turn what was just a messy storage space into a livable room.
To install attic insulation.
Staple the insulation into the joists as directed by the insulation manufacturer.
Now to do that you have to be very careful to make sure you maintain some ventilation space.
At least half of your attic space must be 7 feet high by 7 feet wide with a total of 70 square feet.
Try to compress the insulation as little as possible to avoid reducing the insulating value.
Codes vary from place to place but the rule of 7 for using an attic as an actual room typically applies.
And the answer to that is if that attic is going to be a heated finished space then the insulation moves from the ceiling of the second floor up to the underside of the roof rafters.
Converting your attic into a room can be a fantastic way to fully utilize the space in your home.
Create an extra bedroom a master suite a media room a play room or anything you can imagine for much less than the cost of an addition.