General Questions- Page 122 of 1410
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Heat Load Calc for Finished Basement with Uninsulated Slab
I’m having trouble determining an accurate heat load calc in my finished basement and hoping some can help here. Using Heat Load Pro software demo but open to others if…
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ERV Performance
i was checking out a few different brand of ERVs thru HVI.ORG site. I am interested in around 120CFM size. What I find confusing is, they are all tested at…
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Fasteners and Sealant for Window Installation
Hey all, I am almost done with my rookie window questions. I do have two final questions where experts know the answer but this rookie is left missing the most…
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Help with final wall assembly details
After planning renovations to my builder grade, poorly constructed home for far too long, we're finally starting the work in the next few days. My contractor is not familiar with…
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Seeking Advice on Defective Spray Foam Insulation/ Natural Polymer
I'm writing here to seek advice regarding an issue I've been facing with the spray foam insulation in my home. A few months ago, as part of a retrofit, I…
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Placement for Flanged Window in Rough Opening
Hello, When installing a new window in rough opening, what is the goal with the gaps? I know this is obvious, but I want to double check how the rough…
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Need help with Python code on an online editor
Hey everyone, I'm working on a Python project using an online editor at <a href=”https://pythononlineeditor.com/”>Python online editor</a>. I've run into a problem and could really use some help. I'm trying to concatenate…
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Will a Fujitsu Multisplit send 100% of capacity to a single head?
I have 2 12k heads attached to a Fujitsu 24k non-hyper heat outdoor unit. The max capacity at 5F is around 15,500 BTU/hr. If only one head is turned on,…
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Air Damming Upper & Lower Rafter Bays In A Cape?
I am doing an air sealing and insulation addition project. I want to address the knee spaces and the upper attic. Upper attic has a 3 ton unit with exposed…
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Joe Lstiburek says: The only reason to vent a roof is to prevent ice-damming
The dean of building science, Dr. Joe Lstiburek, is out with a new* article where he says: "The only time you should vent a roof is to control ice-damming. And…