So - something that I didn't put too much thought into before framing started......
Some of the tract builders are framing with 2x6 dimensional lumber. I **assumed** that it must be the standard for our area - after all - why would a tract builder use anything above the bare minimum???? Well - looks like the are framing the house with 2x4's
It's my fault because I didnt ask the builder. A search on google leads me to believe that there are multiple different theories on what is better.
What is the norm in your areas?? Any thoughts on 2x4 vs. 2x6?
Both have their advantages. First, remember that the additional strength of the 2x6 isn't a big deal since a 2x4 on 16 inch centers is plenty strong enough to support a second level with 9 foot walls. You can save money using 2x6's for walls when you go to 24 inch centers, but then you also have to go with 5/8's sheetrock. You cannot use half inch sheetrock on that far of a span.
On taller walls, 2x6's with blocking half way up will give you a straighter wall.
2x6 walls allow you to use R19 insulation instead of R13. Cost for both will add a fair amount to the overall budget.
Every window that you put into a wall will give you about R3 at the window, so it isn't really worth spending the additional money of a R19 wall with a huge hole in it that is only R3 in my opinion.
Something that isn't understood by a lot of people is that insulation in the ceiling is where you get most of your return. Insulation in the walls is good, but since heat rises, the walls are more for stopping the wind then losing heat. It is far more important to have a really good vapor barrier on your walls and to seal up your windows and other openings. Wind will go through brick and any other siding. If it can get through your vapor barrier, it will negate your insulation. As a contractor, it's amazing to see the dust that builds up on the wall insulation when I remove it!!!!!
For those who live in really cold places, every little bit helps. Once you get to that point where every R value matters, you need to factor in triple and 4 pane glass for your windows. The cost is crazy, but the results are there. Double pane windows are just not going to give you any sort of R value.
If you are planning skylights, just think of them as holes in the bottom of a boat. They are the very worse things in the world for letting energy out of your house!!!! I also consider every one of them future water leaks. It might take decades, but sooner or later, they all leak!!! It's cheaper to leave a light on 24/7 then to have a skylight.
