3 months since my last post and I want to say that we are still alive and chugging along. We have installed all the windows & doors, roughed in electrical and plumbing, and now have started mechanicals and siding. The triple pane windows manufactured by Intus, a Lithuanian company, have been installed and they were triple the pain. They weighed significantly more than your average double pane window and cost a lot more. The average U-factor of the windows is 0.18 (R-value 5.5), which is almost less than half of your standard double pane windows which have a U-factor of 0.30 (R-value 3.3). The general rule is that every time you double your R-value, you reduce energy loss by 50%. It'll take a few decades to recoup those savings, but I hope to hand this farm off to my kids one day.
For all of the people interested in the figures, here are some of our breakdown of costs:
Electrical rough in and finish for 2800 sqft living area + 1600 sqft basement = $12,430
Rough plumbing for 2800 sqft living area = $5,000
Mechanicals (8 LG ductless minisplits with 4 ton condenser) = $15,500
ERV (ventilation) = $1100 + labor (TBD)
LP Smartside lap siding + Benjamin Moore Aura paint + cedar tongue and groove 1x6 STK + Sikkens Cetol stain to cover roughly 3400 sqft = ~$11,000 (materials only)
Here some more pictures:
We still have to install the battens to cover the seams, which should add a nice shadow effect. We will use tongue and groove cedar for the soffits to add a nice color contrast to the darker siding.
I decided to do a basket weave pattern for our front porch to add some flair (not TGIF flair, but close). It added to our time with all of the blocking and extra miter cuts required, but you only live once! The 45 degree angles also provide more resistance to lateral forces than if the decking ran perpendicular to the joists. This will protect against the unlikely scenario of when we have 30 guests on our porch run quickly from one side to the other and come to a jump stop. Kind of like when we used to try to tip over our school bus by all moving to one side of the bus on sharp turns.
For my future spec home business, I've been doing a lot of research on what home buyers are looking for when they say they would prefer an energy-efficient home. Many consumer surveys find that people do want houses that are "efficient", but those consumers can't really explain what an efficient house is. I believe having a small solar PV array, tight building envelope, extra insulation, reduction of thermal breaks, continuous supply of filtered fresh air through an ERV, and energy star products can be enough to get a "green" premium on new houses. The trick is explaining it and the benefits to the customer.