The Home Envelope | Insulation, Air Sealing and More
Aug 3, 2026 · 25 min · 13 segments
Ice dams aren't a roof problem — they start in your warm attic. Here's why Connecticut homeowners get them every winter and how to stop them for good. We break down the physics: a foot of snow acts…
Which is incredibly relatable.
Oh, for sure.
If you live in a cold climate, you know exactly what we're talking about, those massive sparkling ridges of ice hanging off the edge of the roof.
Those terrifying icicles.
Yeah, the ones that look like, uh, stalactites and, of course, the sudden mysterious water damage.
So to finally get to the bottom of this, we've pulled together a really massive stack of research today.
Yeah, we have some fantastic sources for this one.
We really do.
We're looking at digests from the Building Science Corporation, guidelines from the US Department of Energy, uh, ENERGY STAR air-sealing protocols, plus a bunch of field insights from top roofing and insulation specialists.
It's a very robust stack of data.
And, you know, the most striking takeaway, the o- overarching consensus across all these agencies, is that ice dams are really merely a symptom.
Wait, a symptom, not the actual problem?
Right.
They are just the visible distress signal of a larger systemic failure within the home.
It is, uh... it's not actually a failure of the roofing materials themselves.
Okay, gotcha.
So our mission today is to demystify this entire process for you.
We're gonna figure out exactly how these ice dams form and, uh, why popular scapegoats like your gutters are completely innocent.
Totally, yeah.
Please don't do that.
Yeah, we will definitely cover why you should leave the hatchet in the garage later on.
But first, uh, to fix the problem, we really need to understand the physics of what we are actually fighting here.
Which is incredibly relatable.
Oh, for sure.
If you live in a cold climate, you know exactly what we're talking about, those massive sparkling ridges of ice hanging off the edge of the roof.
Those terrifying icicles.
Yeah, the ones that look like, uh, stalactites and, of course, the sudden mysterious water damage.
So to finally get to the bottom of this, we've pulled together a really massive stack of research today.
Yeah, we have some fantastic sources for this one.
We really do.
We're looking at digests from the Building Science Corporation, guidelines from the US Department of Energy, uh, ENERGY STAR air-sealing protocols, plus a bunch of field insights from top roofing and insulation specialists.
It's a very robust stack of data.
And, you know, the most striking takeaway, the o- overarching consensus across all these agencies, is that ice dams are really merely a symptom.
Wait, a symptom, not the actual problem?
Right.
They are just the visible distress signal of a larger systemic failure within the home.
It is, uh... it's not actually a failure of the roofing materials themselves.
Okay, gotcha.
So our mission today is to demystify this entire process for you.
We're gonna figure out exactly how these ice dams form and, uh, why popular scapegoats like your gutters are completely innocent.
Totally, yeah.
Please don't do that.
Yeah, we will definitely cover why you should leave the hatchet in the garage later on.
But first, uh, to fix the problem, we really need to understand the physics of what we are actually fighting here.
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