Net Zero Knee Walls Vented Roof

Pretty sure our ceiling is not sealed from the attic.

Net zero knee walls vented roof.

This would be for a vented roof and for my area of the country summer attic heat is as much a concern if not more as winter cold at least for comfort s purposes. Kneewalls are commonly found in attics especially in attics that have been converted to living space but they can be difficult to insulate properly. Code homes my home is concrete block with a couple of blow out wood walls 100 vented soffits large hurricane roof vents and 13 16 of blown insulation. Of net free vent area per lin.

Ft that provide 6 75 sq. Roof 2 wall vent has everything in the box you need to install. I have 6 rafters. In a framed roof with a knee wall how can one determine the load from the roof through the wall to the floor.

I believe this constitutes as a vented low slope roof assembly. Then you must be sure the rafters are properly sized for the new span. Insulating the roof rather than knee walls and attic s floor while usually preferable is not a great option for this house for a number of reasons specific to this house. While stopping rain and snow at the point entry thanks to the enhanced snow screen.

Knee wall to support rafters. 6 six 4 foot pcs. The roof has a 3 pitch and is 12 long from attic to soffits. You can t load a roof load down through a knee wall onto any joists not designed to carry the applied roof loading.

In this energy smart details article senior editor martin holladay describes two ways to insulate attic kneewalls. Furthermore attic knee walls really need to thermally perform better than an exterior wall especially in the summer months when the temperature difference between the unconditioned attic space and the conditioned space is likely to be much greater than to the temperatures that exterior walls are exposed to. I ve been leaning towards maintaining a vented roof in case a leak should occur e g among the 100 fasteners securing a solar pv array to the roof. Seams and joints of exterior house wrap and knee wall backing will be required to be sealed per the manufacturer s instructions.

David your description leads me to believe the joists are ceiling joists and not floor joists in the attic. Of roof to wall vent 24 lin. Like most floridians in post hurricane bldg. We have 14 ceilings and ceiling fans that run 24 x 7.

Inspector told me to put in soffit vents and drill some holes into the attic for ventilation and then leave a 2 space between roof sheathing and insulation. One option is to insulate the room envelope knee walls slopes using baffles to leave 1 2 air gap under the sheathing and attic ceiling.