"Don - thanks for the additional detail and design info. I do understand cost decisions (there is a current blog on Fine Homebuilding that speaks directly to that decision) and also wonder if ANY current mechanical devices have the longevity desired.…"
"Don - Good work! Can you add more detail to what windows/doors you used? Maybe one of the reasons you did not test out as tight as expected was the use of double-hung windows (I see nine in the above photo which is just 2 sides) versus…"
"@Ted - unfortunately I have spent an inordinate amount of time thinking about this issue and all the variables leading up to it as well as ramifications of different variations on the status quo. The durability and energy efficiency of buildings…"
"@ Nate and Tony: what you are attempting to do is replace the run-of-the-mill "code" builders and remodelers with yourselves as the customers' agents (again, as per my previous comments). This is not a recipe for a whole-scale demand…"
"@ Nate Adams - "Is there a way to change this to a demand side solution so consumers drive the change?" Short answer - no. Not enough buying experience (either by individuals or their social networks) to differentiate between any quality…"
"This concept might make much more sense in a multi-unit situation like a condo/apartment complex where the individual homeowners have already lost much of their autonomy to the home owners' association. The greater number of units participating…"
"I had seen this episode on TV but did not remember the external roller shades. Even with triple-panes, I cannot help but think that whole sliding/fixed-glass wall is around R-4 (max) so they would definitely need extra insulation to make the whole…"
"Are you also going to seal/insulate the stair walls and treads? What about the mechanical connections (plumbing, HVAC, electrical)? It's just too hard and I have not yet seen a basement that is truly separate from the "conditioned…"
"A vertical curtain will not separate the upstairs from the downstairs. There is a whole horizontal plane at the ceiling that needs to be addressed. And then you need to address the stairs... Given the cost/complexity, it is usually far easier to…"
"It goes back to the project management axiom: Do you want good, quick, or cheap? Pick one.
If you just want to provide some venting with the existing situation, get the bendable foam air channels and live with the marginal insulation at the top…"
"These type vests have been used by motorcycle riders for many years. Consensus is that they work well in low humidity conditions; less so in high humidity conditions, but always need airflow to create the evaporative cooling. Not sure how this would…"
"Alan, it's not the source of the energy that's important - it's the amount of energy used that matters. If you reduce your energy loads (whatever they may be) you will be generating less carbon emissions (wherever they may be…"
I assume one of your advisers did a blower door test (preferably also with IR camera) prior to the work. It would be real interesting to see before/after readings and images. You may also have much more leakage at non-ceiling locations than you…"
The perceived lack of building science training is a "red herring" promoted by those whose interest is in sustaining their business model of providing training courses. There is actually a fairly large number of building science…"
Sorry - no photos. But it was similar to many other projects easily found. I used multiple, overlapping layers of 2" polyisocyanurate (2 on the sides, 3 on the top) glued together with urethane construction adhesive (I also used duct…"
Residential Energy+ is a Rocky Mountain Institute (RMI) initiative enabling industry actors to capture the $150 billion residential energy upgrades market opportunity, and meet the top unmet demand among homeowners: improved home energy performance.