Community: PassivHaus

PassivHaus is a standard of construction that yields extremely tight envelopes and low energy use.

The PassivHaus Institute is in Germany, but we have a branch here in North America as well, Passive House Institute US

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1 Answer

What is the best ventilation system for a passive design cafe/restaurant?

We are trying to design a passive cafe/restaurant building and i want to know the best ventilation system to use for the building please.

Asked By monita taghva | Oct 20 14
5 Answers

Retrofitting new wall inside existing frame

I have an interesting challenge in my 1941 1500SQFT energy retrofit in Minneapolis (Zone 6-7). I want to maximize realistic R-value while preserving the existing siding and sheathing, which we can assume has no vapor barrier (this will be verified when we open it up). While I would normally prefer to wrap the exterior, this is not possible at this time. There is no historic value to the plaster/sheetrock, and we're demoing kitchen and bath anyway, so I intend to do all insulation from the inside. The home is all 2x4 16"OC construction with old yellow fiberglass batts.

Asked By Ryan Griffin | Oct 8 14
7 Answers

US triple pane with uncoated glass?

I've been thinking that for the shaded south side of my Minneapolis home, triple panes with no Low-E coating might be best. I'm looking for a US made window that's decently insulated with high SHGC. I've asked a few manufacturers if they would make me a triple pane with clear glass, but I haven't found anyone willing to do this. Would I be giving up too much insulating performance (or interior heat reflectivity) with clear glass, and is the a US maker who will do this?

Thanks,
Ryan

Asked By Ryan Griffin | Oct 5 14
1 Answer

How to protect a shallow monolithic footer during winter construction, zone 5

We have a Passive House design, which includes a shallow and 1'4'' wide mono footer. 4'' floating slab has 12'' deep thickened edges. 12'' under the slab are insulated. There are 4'' of EPS on all 3 sides of the footer. (see detail/picture).

Asked By Lucyna de Barbaro | Oct 1 14
18 Answers

Detail and Insulation Review

We are looking to do REMOTE wall construction on our new house located in S.E. Michigan. Currently drawn as 2" exterior rigid foam, but 3" will probably be the the correct amount to use. I plan to use Bituthene as the WRB, not sure if anyone can recommend any alternatives? I really like Bituthene's low perms and low cost, but I assume that asphalt products aren't all that green....

Asked By Eric Burhop | Jul 31 13
18 Answers

Detail and Insulation Review

We are looking to do REMOTE wall construction on our new house located in S.E. Michigan. Currently drawn as 2" exterior rigid foam, but 3" will probably be the the correct amount to use. I plan to use Bituthene as the WRB, not sure if anyone can recommend any alternatives? I really like Bituthene's low perms and low cost, but I assume that asphalt products aren't all that green....

Asked By Eric Burhop | Jul 31 13
5 Answers

Blower door test cost

Not including the cost of the blower door test itself, I am looking for a ROM materials and labor cost per ft-2 to seal up a conventional 2 x 4 framed house, sheathed, sided, windows, doors, stud bays, lid, etc.....?

If someone that has done it can estimate labor hours to get to 5-7 ACH-@ 50 I can factor my local labor rate. Please include the trail and errors, IR and smoke back and forth, etc. Or if you sealed up some ft-2 home let me know how long it took...

Thanks!

Asked By Terry Lee | Aug 20 14
0 Answers

The Passive House Alliance Vermont chapter would like to invite you to attend the 2nd Annual 2014 Passive House Symposium.

The Passive House Alliance Vermont chapter would like to invite you to attend the 2nd Annual 2014 Passive House Symposium. The one day event will be held at Vermont Technical College in Randolph VT, on Thursday, October 2nd.
We now have a Pay Online Link !! For Attendees @ 50$ for the day Lunch included and 25$ for PHAUS and BPPA-VT members. Below
- Key Note Guest Speaker – VT Lieutenant Governor Phil Scott.
--Report update on MLS listings, Appraisals and Financing for High Performance/ Passive House buildings by Jeff Gephart from Efficiency Vermont.

Asked By Chris Miksic | Aug 21 14
4 Answers

Composting toilet in a Passive House?

This is probably only a hypothetical question as I doubt I could talk my wife into a composting toilet but…If we have a tight home with balanced ventilation, and if we had a composting toilet that has a small 5W fan continuously exhausting air - how would we provide make-up air?

Asked By Scott Tenney | Jul 24 14
8 Answers

Another Hole(s) in the... Wall

My Northern zone 5a home can't be a Passive House (PH) because it was built in the 50's. But I'd guess that imitating PH practices where possible as projects are done will help the house be the best it can without a gut rehab.

Asked By Gordon B | Jun 23 14
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