Staple insulation between the wall studs and ceiling joists image a.
Finishing attic walls.
I tried linking panels with spray foam instead of taping.
The location of the top of the knee is marked and after checking the level long boards are attached to the ceiling joists.
Knee walls and flat ceilings running plumb from the roof rafters to the attic floor joists knee walls eliminate some of the roof s slope at the expense of less square footage of floor space in the.
I have a very similar attic wall to yours.
If you re finishing your attic insulating it to the proper r value can cause a dramatic loss of headroom if you limit yourself to fiberglass batts.
There are no special exceptions just because it s living space in the attic.
I used xps because it was on sale for crazy cheap and i haven t put up the ignition barrier yet.
Follow the rule of 7s.
In rare cases especially in new construction homes the attic may have been built unfinished with the correct flooring in place with the idea that the homeowner could later on finish the space.
Every attic is different but a few established norms and practices will guide your renovation.
At least 50 step 2 make sure the attic has a full size staircase.
Don t mash or compress the insulation into the space.
I ve attached a few before and after pics.
Use r 30 insulation for the ceiling and r 13 for the walls.
For a finished attic to be to code it must satisfy the same living requirements of other rooms sometimes called the rule of sevens any living space in a home needs to have at least 7 feet 2 1 m of clearance from the floor to the ceiling and there needs to be at least 70 square feet of space available at least 7 feet 2 1 m in each direction.
I sealed all the gaps in the wall with canned foam and the xps is glued around the perimeter.
Enforcement varies but codes typically say that at least half of a finished attic must be at least 7 feet high and that this area must be a minimum of 7 feet wide and 70 square feet.
In the first step a knee wall is installed.
In most cases though the joists cannot support live loads and may not even be covered with boards.
Building code also requires that the.
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.
It needs a certain amount of loft to work properly.
A contractor or a local building official can help you assess how the rule will apply to your attic and how modifications like dormers can resolve height shortcomings.
Low cabinets and bookcases fit snugly in the space under slanted ceilings.
Finishing the attic my preference is to push the knee walls close to the eaves creating as much floor space as possible.
Step 1 framing of the top and sides of the knee wall.
