The rule here is simple.
Insulation a attic with no acess.
Most insulation i find in the attic of homes is air permeable air can travel through it.
Both can be added to uninsulated attics or layered over existing material.
This means while your insulation in the attic may slow the flow of heat via radiation it will not stop air flow from the living space which carries heat via convection if there is a path for air to travel.
For diy attic insulation you ve got two choices.
Be aware that if you decide to add an attic access hatch or fold down ladder it should be lockable.
That reminds me of a home we insulated about 10 years ago.
The easiest way to insulate a low slope roof assembly like yours is to install one or more layers of rigid foam insulation or alternatively mineral wool insulation above your existing roof sheathing followed by a cover sheet and new roofing for example epdm roofing tpo membrane roofing or pvc membrane roofing.
Then secure the pillow with the duct tape.
Loose fill or batt the common term for blanket insulation.
In fact there was no attic access.
Otherwise you have provided easy access for theft through the attic access openings of any adjacent units.
The good thing about an attic is you can inspect roof leaks and correct insulation flaws.
Purchase an 8 piece of trim tack it up around the area you cut caulk the outside and weatherstrip the overhand and close it up.
You have to be able to access the attic but an attic access puts a hole in the layer of insulation covering the attic floor.
For air to move there must a path hole in the ceiling crack in the.
However there s a problem.
Why not clean out a closet for a day cut yourself an access panel near the middle of the house and inspect.
With no access there s no way to gain these advantages.
Even if you find a way to insulate the flat ceiling you have all of the disadvantages of an attic with none of the advantages.
Stack insulation batts on top of the duct tape so they extend about 1 in.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
This creates an insulated attic access door.
So what to do.
4 if the house is mid century modern style with a flat or shed roof there may be no attic.
It will be a waste of money time and potentially cause serious problems.
To slow heat transfer through a home builders install a layer of insulation on the floor of unconditioned attics.
To keep the blown in insulation from falling through the attic hatch opening make a 2x12 dam around the hatch perimeter.
Don t worry you don t need to fill your entire attic with insulation.