The boys start with a really cool problem-solving involving a monopoly framing, big overhangs, and thermal bridging. And the follow-up is an excellent question from Western Canada regarding the use of ZIP sheathing with a Class I interior vapor retarder. It's a great discussion involving R-values, air barriers, vapor permeability (including all Classes of vapor retarders), wetting, and drying. Whew! Good thing that Steve had a "great" joke to close this one out...(gag).

PETE'S RESOURCES:

- GBA: "Calculating Thermal Bridging in a Wood-Framed Building:"

- BuildingScienceAdvisor:

- GBA "Can Polyethylene Be Used As An Air Barrier?"

www.mbricotiledecks.com/

If you can't find an experienced high-performance builder, then find a professional builder who is willing to listen and learn! And add in time and money in the budget for that listening and learning. The same can go for your architect. But as Steve says: "SOMEONE has to drive the bus. Put on your big boy pants and move your business to the next level."

PETE'S RESOURCES:

- Building Enclosure Manufacturers Tech Support - Here are just a few manufacturers with outstanding tech support professionals: Huber, Dorken, Rockwool, Benjamin Obdyke, Prosoco...

- "How Does Building Geometry Affect Energy Performance, Aesthetics, and Construction Cost?" - https://haus-arch.com/building-geometry/

https://www.arclin.com/

All 3 UBIP podcasters are fond of the Superior Wall System, but connecting the extended "foot" of the foundation wall panel to the basement slab is a bit tricky. But not for Steve, but of course. And while sump pumps OUTSIDE are a mystery to Pete, Jake & Steve walk Pete through it. And a bonus: using gravel to spread the structural load and better manage the water load. All that and a "joke" by Steve to-just-die-for...

PETE'S RESOURCES:

- Superior Wall resources on slab-to-panel connections - https://weaverprecast.com/wp-content/uploads/2017/11/Pouring-the-Concrete-Floor-Slab.pdf& https://www.superiorwalls.com/api/getFile/19

- Outdoor sump pumps

- Sump Pump Guide

- https://buildingscience.com/documents/building-science-insights-building-profiles-new-construction/bsi-146-below-grade-water

- "Angle of Repose" by Wallace Stegner

https://www.arclin.com/

Once again, we drive wood into the ground, but only in the context of Permanent Wood Foundations. No surprise that this discussion is all about water & drainage. And some episodes ago, the boys each revealed pivotal moments in their careers in the building industry and wrapped up with a request for your pivotal moments. We got one, but what a doozy from our buddy Carl Seville of SK Collaborative. I think we might be done now (at least for a while) with PWF, but come on now: email us your pivotal moment in our industry!

PETE'S RESOURCES:

- American Wood Council 2021 Permanent Wood Foundation Specifications NOTE: Need to purchase this one...

- Southern Forest Products Association Permanent Wood Foundations Design & Construction Guide NOTE: freebie...

- Sk Collaborative, Carl Seville & Carl Seville interview

Two great questions about wall assemblies. The boys dig deep, exploring all the variables to consider for both wall assemblies. And no big surprise: Much of the conversation is about how to get these three control layers right (water, air, thermal) and ALSO get the drying potential (vapor) correct.

PETE'S RESOURCES:

- 2021 IRC - Montana

NOTE: The IRC 2021 does NOT include any chapters on energy efficiency/energy requirements...

- Huber Table for ZIP-R recommendations for all climates

- "Check but Verify - Why We Do Multiple Blower Door Tests:" https://www.youtube.com/watch?v=WDD-BpTZJ3I

- "When to Perform a Blower Door Test (and when not to)"

Whole bunch of reasons to consider SIP building systems BUT switching from stick-framing is not a walk in the park. But UnBuild It has a ton of experience with SIPs. Next up: Just how stable are the R-values of rigid insulations (the plastic ones with blowing agents) over time? The boys spend just the right amount of time on this on...(just could not resist that).

PETE'S RESOURCES:

- "The Complete Guide to Building With Winter Panels:"

- BASC SIP Details (SIPA)

-"The BuildingGreen Guide to Thermal Insulation:"

- "A Study on Variation of Thermal Characteristics of Insulation Materials for Buildings According to Actual Long-Term Annual Aging Variation:"

Should exterior above-grade wall sheathing or framing line up flush to the outside face of the foundation? Is sealing the bottom of the above-grade wall and foundation with a sill sealer product like Protecto Wrap Triple Guard a good idea? This sets off Jake, Steve, and Pete on balancing water protection, air sealing, and drying potential at this key transition and challenges for control layer continuity. Finally, Steve gets TMI with his sleeping arrangements with his wife...

PETE'S RESOURCES:

• Protecto Wrap Triple Guard
  • NOTE: It is interesting that in their installation drawing, the framed wall is stepped out to line up the framing with the foundation, but they do not lap the sheathing down over the foundation.
• Huber ZIP Sheathing bottom-of-above grade-wall Detail(s)
  • NOTE: 4 details with "Scenario 4" being spot on for the UnBuild It guys...
• Above-Grade Concrete Foundation Waterproofing

Plenty of reasons for the question mark: Pete wondered what this term really meant; Jake points out that for most of his career, he was not involved in this process as a builder; Steve gets pretty heated when this process does not include budget (at least a realistic budget...). Gem here from Steve: "70% of a home's budget is hardwired into the number of square feet."

PETE'S RESOURCES:

- Build Show Podcast Episode 91 - Pre-construction Service Agreements