C Attic Gable End Wall Sheathing Be Made Of Styrofoam

Install gable vents on each end of garage.

C attic gable end wall sheathing be made of styrofoam. Your house has a gable end if you have a sloped roof with a vertical wall that forms a triangle under the end of the roof. However your roofer is correct that bathroom exhaust venting is desirable to avoid indoor moisture problems that can extend to the attic roof sheathing and can affect roof. Here are the three keys to sheathing an attic kneewall properly. I will extend this roxul to the attic side of the knee wall studs.

Cooler attic cooler house. Place planks 1 by 6 or 1 by 8 or plywood sheaths across floor joists to improve your mobility in the attic. And of course a bathroom with a window doesn t require an exhaust vent. An exhaust vent fan can exhaust out through a gable end side wall or out through a soffit overhang.

Install soffits along under each side of roof eave. In some cases the expected loads will be too high for the gable end frame end wall studs or ceiling diaphragm. The death of the 8 sheet one of the biggest items when sheathing a wall vertically is that the sheathing has to be continuous 602 10 4 5 which meant that an 8 sheet wouldn t cut it in many places so longer ones were required. Up to 97 of radiant heat from the sun is reflected by solarbord so the attic can be up to 30 cooler.

Here is how to insulate an unfinished attic. For the gable ends i may use both methods mentioned. Install r13 insulation in the rafters on top rafter baffles. Preparing an attic for insulation.

I know not ideal but has to help and make some noticeable difference. This means the rest of the house will be cooler too. 3 4 t g osb flooring will cover the floor. For more information on gable end frame bracing see the following.

If so the building designer might design a balloon framed end wall which eliminates the need for a gable end truss. This will allow me to rigid foam block the joist ends right up to the knee wall sheathing and seal with dow pro foam. I was considering sheathing attic side knee walls with either thermo ply red or xps foam. But the north wall is ripe for added depth as well as the south wall outside of the landing and perhaps the dormer walls too.

Install rafter baffles in each rafter cavity. Both can be done poorly of course and i ve seen both done poorly. A house protected by solarbord radiant barrier sheathing has a head start on comfort. The stairs come up to the south gable end with a landing of just 36 from nosing to framing so i don t know if i can get away with deepening the wall in that area.

I think the rigid material will do a better job with air sealing though and will stay intact longer. Gable end walls and the roof sheathing at the gable end can take a tremendous beating during a hurricane and if not properly attached and braced they fail and cause catastrophic damage to your home. Cover the whole wall. I d prefer to see a rigid material on attic kneewalls figures 8 and 9.

So companies like norbord started creating tallwall windstorm panels to help alleviate this.