To meet all three goals insulating your finished attic ventilating the roof and maximizing headroom use a combination of dense batt insulation rigid foam sheeting and air chutes.
Insulating a hip roof attic.
With a finished attic insulation must help keep the attic areas comfortable.
If your attic is often used or perhaps you plan to convert it in the future you will need to insulate the inner surfaces of the roof.
This is a styrofoam shoot that you staple to the underside of the roof deck stopping the insulation from compressing against the underside of the roof and creating a 1 1 2 airspace for 4 to 8 long.
Whether or not there is an inner roof lining and the total thickness of the roof structure.
The technically correct approach depends on a number of factors.
In either case you will need to follow the general steps below to insulate your garage roof.
That means insulating the attic floor only not the walls and having vents in the roof.
No outlet venting found.
If you have a flat garage roof and an attic above you can install the garage insulation from below using a standard ladder.
How to insulate a finished attic.
I would recommend that you install them the full length from the lowest part of the attic to where there is an adequate air space existing.
The attic is uninsulated.
Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow.
Most codes require a specified minimum amount of headroom and it s tough to meet this requirement when insulating a finished attic especially since most.
A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.
Insulating the pitched roof.
Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.
The floor joists in the attic appear to be 2x10 and filled with the cellulose.