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'Promo SM'

Thank you to all PHIUS fans. These standards are slowly making their way into the building codes. Providing a target is a critical step in the process.

Do passive standards account for embodied energy/Co2 in building products?

Good overview; thank you.

What does certification cost? Are there tax breaks for cert? Would an energy star design masonry wood fire heater pass? Yes there are a few designs that have energy star rating. I like induction cook tops. Seen them in solar sailboats. So would like to get one for solar cottage. Will be wiring cottage mostly d.c. a lot like a solar sailboat. Solar sailboats can share a lot in common with off grid cottages. D.c. electronics use less and less energy. Building an off grid earth ship inspired skillion cottage 24x24. Will add on later. No tires no berm. Better off paying for insulation because cold ground temps and 6 foot frost depths in central U.P. of Michigan. Cmu well insulated north wall, 5.5/12 pitch roof lat 46.1 N, insulated masonry floor, and a timber frame. Timber frame uses less wood by volume and less sawing at the mill. What about water? I do plan on reusing gray water for planter and toilet. I have a flowing point down by the springs and fen. Yes it does waste water. I do run a ram pump off it to water garden. And have gas water pump I fill barrel on the ridge for water at camp site. Till I can afford real well. I want dark coolers in cool environment. Getting my food forest certified organic come spring. I hand dug my piers and foundation. I may have to dig an air exchange pit. To hook to my "vent to daylight" as required by code with masonry floor. To vent heavier than air gasses. I could use stone instead of cmu to cut carbons. But labor and time. I would love to use local brownstone and western delta honeycomb stones. Using honey comb stone for my old world kitchen. Like Temple of Malta. Which should go good with Richardsonian Romanesque style. I wanna build a Broch for a tower. Planning on have plants in planter. Need as much as one air exchange a minute. And could need supplemental co2. If my dli is too high for plants. Also what is recommended r value for in ground piers? Slab r 12, piers r 12? or should that be r 20?, walls r 40, roof r 60. Looking at .45 window area of floor footprint. Would rather open windows than be cold and then have to burn wood. Iecc zone 6 in U.P. of MI but can be zone 7. Escanaba is way colder then me and gets lake effect cooling. Actually in a deer wintering complex. Natural wind break areas that deer spend the winter in because better environment. Averages 78 days of more than 12 inches of snow on the ground. I am just trying to have as least bills as possible. The structure and roofing is cheap 5k. Insulation alone will be over 10k and about same for windows.

35:00 Where is the thermal breaks between windows, doors, and walls? Fiberglass insulation next doors and windows come on. No thermal breaks how long is that fiberglass insulation gonna provide stated r value? Is that a wood corner no internal thermal break. Around doors, windows, corners, and joist pockets are usually the greatest loose of heat. And where moisture problems can occur frequently. I do see they put some kind of insulation around window and door as thermal break. They should have a mineral wool all the way around doors and windows plus bay next to them or spray foam. Clearly someone does not understand the factors that affect r value of fiberglass. Mainly the insulation exposed to moisture; its thermal performance (R-value) drops because water displaces the insulating air that is trapped in insulation. Further, water’s thermal conductivity is nearly 20 times higher than the conductivity of the average thermal insulation, according to Steve Badger, Ph.D. As a result, the fiberglass insulation would lose its ability to restrict the heat transfer, hence losing R-value. It also results in less energy efficiency, heat loss, and higher energy bills. Nevertheless, its thermal properties will come back once it’s dry. However, the fiberglass insulation will be compacted and will not recover to its actual thickness when exposed to water for a prolonged period and unable to dry in time. It would permanently lose some of its thermal performance, efficiency, and integrity when this happens. It's not just being air tight but paying attention to condensation zones. Even though a building is air tight condensation zones happen. Sometimes too much insulation can block heat. Insulation works both ways keeping things cool and can also keep things warm. Just like co2 and methane having a super cooling effect as well as warming effects. Even Rock wool can hold moisture and loose r value. A soaking wet piece of rock wool still provides around 80% of its r value. Closed cell foam even absorbs water if in contact long enough. I use closed cell foam floats to remove docks and boat lifts. That are a lot denser than closed cell insulation. After a day of use they have absorbed water and don't float stuff as good. And need to be dried out. This also happens with open grain and closed grain woods. Don't run a stove hood vent into an air exchanger. The grease and oils can clog it.

What do Phius folks think about e.g. earthships, which greatly reduce energy costs while breaking many of these rules/guidelines? I'd love to see an in-depth analysis of earthships from a Phius perspective.

Thank you!

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also, any good books about retrofitting and maybe green renovations? My home is 110 yrs young and has very bad everything

I have been looking online to see other deep retrofit Reno’s. My question is the foundation. Once you demo and take out the old slab what do people do about the insulation that runs to the stem wall but not under the stem wall. Like I have no idea how to make a continuous thermal break or a continuous insulation that runs all the way to the roof and where is the capillary break when you only run insulation to the inside edge of the stem wall? I’m not sure if I’m even making sense. So, I’m short, I’m too wanting to do a retrofit, my concern is how can I insulate the the ground and outside wall and.have a continuous thermal layer? Like wouldn’t the stem wall make that hard?

Thank you very much, very interesting! How many Passive Houses in US?

Great presentation thank you

Excellent, heating and cooling explained

So interesting. The American people need this information and more on formaldehyde. Thank you.

excellent presentation, thanks Sean!