wall section detail and roof detail
user-2917446
| Posted in Energy Efficiency and Durability on
I am going to be building in zone 7 (northern Wisconsin).
I would like some feed back of the design of the roof and wall section.
I know I am missing some of the flashing details. I am more thinking on the wall and roof sections.
Thanks for the help.
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your details are very hard to read, I'm sorry I don't have any feedback as I had a hard time reading them and decided to stop. Consider closed arrows or dots or heavy ends. Also consider breaking up your text to either side, it does not all have to be in a row and is in fact harder to read that way.
Also, try your hardest to not cross lines
Thanks for the input. I will make the changes.
Deleted
User...446,
- Both the wall and roof assembly you have suggested look like they will perform well, but I don't know what your code says about roof R-values in zone #7, and I think you are light on the required exterior insulation for the walls.
- The foundation and slab appear to be shown as poured monolithically. If you are going that route you will have a down-turned slab, not footings and a stem-wall. What's the double line on top of the slab which seems to extend under the exterior wall?
- Rather than vent the rain-screen cavity under windows, just hold down your furring so air can move horizontally. It both simplifies the build, and makes water intrusion at the sill less likely.
- Consider either switching to plywood, or using thicker OSB for the roof sheathing. 1/2" OSB doesn't hold fasteners very well.
Your foundation insulation is skimpy; you meet code-minimum requirements but that's not very robust. And you have a major thermal bridge because the insulation is not continuous. In this type of design I place the vertical insulation on the interior, not the exterior of the foundation wall.
I know service cavities get a lot of discussion but I find that they aren't actually very useful, and I find cross-strapping walls to be complicated and time-consuming. I use the sheathing as the air control layer. With enough exterior insulation you don't need an interior vapor retarder so there is no need for a separate service cavity. You don't call out what the exterior insulation is; there are many options.
Vertical rebar in a footing usually has a hook at the bottom.
I don't see a sill pan at the window. It's not required in the IRC but it should be.