UnBuild It Podcast

This is Q&A with Adult Supervision: Kohta Ueno. Kohta is so efficient we nailed SIX building enclosure questions: Listener Gagan - reconfiguring existing walls with new control layers; Listener Bill: the need for dedicated vent space with vertical metal siding on ICF walls; Listener Michael - rainscreens for roofs instead of walls; Listener Sean - best detail for using mineral wool (exterior continuous rigid insulation) on a roof; Listener Miles - hip roof in Arkansas best practice: vented roof, vented attic, what type of insulation; Pete asks Kohta's cut on ORNL's new BuildingScienceAdvisor.

Pete's Resource(s):

1. How to Look at a House Like a Building Scientist (Part 1 - Air) - https://www.greenbuildingadvisor.com/?s=how+to+look+at+a+house+like+a+building+scientist

2. How to Look at a House Like a Building Scientist (Part 2 - Heat) - https://www.greenbuildingadvisor.com/article/how-to-look-at-a-house-like-a-building-scientist-part-2-heat

3. How to Look at a House Like a Building Scientist (Part 3 -Temperature, Humidity & HVAC) - https://www.greenbuildingadvisor.com/article/how-to-look-at-a-house-like-a-building-scientist-part-3-temperature-humidity-and-hvac-systems

4. How to Look at a House Like a Building Scientist (Part 4 - Water) - https://www.greenbuildingadvisor.com/article/how-to-look-at-a-house-like-a-building-scientist-part-4-water

5. Building Science Advisor: https://bsa.ornl.gov

Jake hooks up with the same custom builder team 

• Luke Mann - Rangeline Homes https://www.rangelinehomes.com
• Jackson Andrews - Building & Design https://jacksonandrewsbuilding.com
• Shane Durkin, Patriot High-Performance Homes https://www.buildpatriot.com

For a roundtable discussion on the ideal client. Key topics include vetting clients by matching company strengths to client expectations and budget; the two-way street of trust and respect; the importance of references or background checks (they go both ways);  pre-construction services to move the project forward; and finally, red flags...as both warnings AND opportunities.

Guest Reuben Rudisill is Huber's Research, Development, & Innovation engineer, joining Jake & Pete from the Building Science Corporation Summer Symposium in Westford, MA. Jake & Pete know just enough to get in trouble when it comes to structural details of ZIP, ZIP-R, and Advantech Huber OSB panels, so Reuben quite gently sets these guys straight on how high-performance OSB is manufactured and tested, how fasteners are as important as the panels, and what you can and cannot do with each of Huber's panels. The podcast does close out nicely with how important friendships are in the building business world (we could get this "touchy-and-feely" because Steve was "missing" for this podcast...).

Pete's Resource(s):

1. Huber Technical Support: https://www.huberwood.com/technical-support

2. Solid Panel System - https://bbe.umn.edu/research/perfect-wall-building-and-delivery-system

Join Jake and Steve as they chat with Ross Trethewey, of TE2 Engineering and This Old House, at Building Science Summer Camp 2023.

Check out TE2 Engineering

Steve calls SketchUp his electronic clay model which he can use with his builder, his enclosure consultant, and his clients. Pete gives up the dirt on WebSoilSurvey, the 1st tool he uses on every project design/spec review. Jake heads home for his favorite tool - his new Aarow Building office. Last but not least: Steve returns with his 2nd favorite tool--the field. Getting out to job sites and seeing his design work play out as a process--no substitute and this tool is key to Pete and Jake as well.

NOTE: You have to listen to the entire podcast to understand the Good Fellows reference...but it is worth the wait. Has Pete seen it yet? He is still not sure...

Pete's Resource(s):

1. Sketch-Up: 3-D rendering of 2-D plan set - https://www.sketchup.com

2. WebSoilSurvey: https://websoilsurvey.sc.egov.usda.gov/app/

3. Aarow Building Office: https://buildshownetwork.com/contents/how-our-office-has-improved-our-business

4. THE "FIELD:" https://buildshownetwork.com/go/stevebaczek

5. What might be the Frank Lloyd Wright quote Steve is seeking: "An architect's most useful tools are an eraser at the drafting board, and a wrecking bar at the site."

6. Good Fellows - the movie: https://en.wikipedia.org/wiki/Goodfellas 

What should we monitor, and what do we do about elevated levels of indoor pollutants? Air temperature, relative humidity, parts per million CO2, PM 2.5

Pete's Resource(s):
- "Measuring (and Understanding) Humidity" - https://www.greenbuildingadvisor.com/article/measuring-and-understanding-humidity

- "Inhalable Particulate Matter and Health" - https://ww2.arb.ca.gov/resources/inhalable-particulate-matter-and-health

- World Health Organization "Radiation - Electromagnetic Fields" - https://www.who.int/news-room/questions-and-answers/item/radiation-electromagnetic-fields

- IQAir Visual Pro - https://www.iqair.com/ca/air-quality-monitors

The top leading edge of a PSA tape running horizontally is not weather-lapped or mechanically attached, depending solely on the adhesion of that top edge to the substrate to keep water out of the WRB/PSA tape system. Are ALL PSA tapes in WRB systems self-terminating? Is there a way to quantify the top-edge adhesion that makes the tape self-terminating? The boys go at it over this one!

Pete's Resource(s):

1. Pete's blogs on Wingnut PSA Tape Testing - Pete wrote over a half dozen blogs on his tape testing. Go to www.buildinggreen.com and search using the term "wingnut tape."

2. GBA Blog: Housewrap Tape Problems (Jeff Hoch) - https://www.greenbuildingadvisor.com/article/housewrap-tape-problems

3. GBA blog: Combining Sheathing with a WRB and Air Barrier  - https://www.greenbuildingadvisor.com/article/combining-sheathing-with-a-wrb-and-air-barrier

4. Pressure Sensitive Tape Council (PSTC) Test Methods - https://pstc.org/test-methods/

Our homes use way more water than you think they need to. The boys dive deep into water efficiency and performance, from toilets to showerheads to hot water recirc systems.

Pete's Resource(s):

1. EPA Water Sense: https://www.epa.gov/watersense

2.  2016 AWWA Residential End Uses of Water - https://www.awwa.org/Portals/0/AWWA/ETS/Resources/WaterConservationResidential_End_Uses_of_Water.pdf

3. Gary Klein Efficient Hot Water Systems - https://coloradowaterwise.org/Resources/Documents/Green%20Plumbers/Gary_Klein_Protocol_for_Evaluating_a_HWDS.pdf

4. BuildingGreen Water Efficiency: https://www.buildinggreen.com/water-efficiency

Despite how consistently and relentlessly the boys have dissed ICFs, this episode takes ICFs seriously and fairly (or as best as Jake, Steve, and Pete are capable of...).

Pete's Resource(s)

1. "Costs & Benefits of Insulating Concrete Forms for Residential Construction" (https://www.huduser.gov/publications/pdf/icfbenefit.pdf): A bit dated but still useful given that the PATH program (Partnership for Advancing Technology in Housing) is a decent backdrop for a fair analysis of this building technology.

2. "Air Leakage of Insulated Concrete Form Houses" (https://dspace.mit.edu/handle/1721.1/72627): Interesting that this energy modeling research reports less than significant air leakage advantage of ICFs compared to wood frame single-family houses.

Four Cool Questions: 

1 - Airtight Drywall Approach from Aussie Sean; 

2 - Continuous Insulation (moving from below-grade to above-grade walls) from UBIP buddy Ian;

3 - Frost Protected Shallow Foundations (anonymous) ; 

4 - Roof penetrations from Jake's IG buddy Jeff

Pete's Resource(s):

1. Myron Ferguson ADA YouTube: https://www.youtube.com/watch?v=Mhv9iFE3AY4

2. "A Slick Transition from Foundation Insulation to Wall Sheathing" - https://www.protradecraft.com/detail/slick-transition-foundation-insulation-wall-sheathing

3. "Revised Builder's Guide to Frost Protected Shallow Foundations" - https://www.homeinnovation.com/~/media/Files/Reports/Revised-Builders-Guide-to-Frost-Protected-Shallow-Foundations.pdf

4. "Which Penetrations Cause Roof Damage?" - https://www.energyvanguard.com/blog/which-roof-penetrations-cause-water-damage/

NOTE/CORRECTION: Pete got one of his units of measure wrong when stating the standard for an airtight building material. He stated "per meter.." (linear) when the correct metric is "per meter SQUARED..." (area) (See https://www.wrmeadows.com/air-barriers/technical-bulletin-standards-explained-astm-e-2178-standard-test-method-air-permeance-building-materials/)