ABOUT THIS EPISODE
“Your insulation is too old” sounds like a simple diagnosis, but it can be an expensive trap. We dig into the most common attic insulation pitch we hear and explain why age alone is not a real reason to rip out insulation. If a contractor tells you insulation has a “useful life” like milk in the fridge, we give you the questions to ask and the red flags to watch for before you sign off on a big bill.
We break down the basics of R-value, what it actually measures, and why the highest number is not always the smartest upgrade. If your older home has less insulation than today’s recommendations, you often don’t need a full removal and replacement. In many cases, you can simply add insulation on top and put your money where it counts, especially after you run the payback math on energy savings.
Then we get specific about the times removal does make sense: serious contamination from rodents or wildlife, sections damaged by moisture, mold concerns, and physically ruined material. We also talk about cellulose insulation, why dust in the house often points to attic-to-house air leaks, and why air sealing beats tearing everything out. Finally, we cover a critical safety and durability detail when you add insulation: keeping soffit vents open with proper baffles so you don’t create overheating, condensation, mold, or a shorter roof life.
If you’ve ever been hit with a massive quote for an attic “clean-out,” listen closely, share this with a friend, and subscribe for more practical home inspection advice. After you listen, what’s the biggest contractor upsell you’ve been pressured to accept?
To learn more about Habitation Investigation, the Three-time Winner of the Best Home Inspection Company in the Midwest Plus the Winner of Consumer Choice Award for Columbus Ohio visit Home Inspection Columbus Ohio - Habitation Investigation (homeinspectionsinohio.com)
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SHOW NOTES 🔗
TRANSCRIPT 🔗
00:00:01.679 --> 00:00:03.040
All right, Laura.
00:00:03.600 --> 00:00:04.080
Jim.
00:00:04.320 --> 00:00:08.880
Alright, every now and then I hear about scams?
00:00:09.359 --> 00:00:10.640
Yeah, it's a scam.
00:00:11.359 --> 00:00:12.240
But let's call it what it is.
00:00:12.400 --> 00:00:12.800
It's a scam.
00:00:13.039 --> 00:00:15.759
It's not always a scam if there's a good reason.
00:00:15.919 --> 00:00:23.519
But I'll hear where somebody says, hey, this company says I need to get new insulation because my insulation is over 20 years old.
00:00:23.839 --> 00:00:25.039
Okay, that's a scam.
00:00:25.280 --> 00:00:26.079
That's a scam.
00:00:26.160 --> 00:00:29.519
Because insulation does not have an expiration date.
00:00:29.679 --> 00:00:32.560
And I don't I don't know.
00:00:32.640 --> 00:00:33.759
Maybe maybe it's irritated.
00:00:34.399 --> 00:00:35.759
It doesn't wear out.
00:00:36.159 --> 00:00:43.359
Now, so there's a couple areas where insulation could justify replace re ripping it out.
00:00:43.600 --> 00:00:45.359
But not just because of its age.
00:00:45.600 --> 00:00:47.200
Never just because of its age.
00:00:47.359 --> 00:00:51.280
Now, all right, so there's R value, which is the level of insulation.
00:00:51.439 --> 00:00:55.200
R is for resistance of heat transfer, is what that stands for.
00:00:55.280 --> 00:00:59.359
So anyway, if you have an older house, insulation's been up there for 30 years.
00:00:59.520 --> 00:01:05.840
Well, probably 30 years ago, the the recommended amount of insulation was quite a bit less than it is nowadays.
00:01:06.079 --> 00:01:08.079
Isn't it like 35 now?
00:01:08.480 --> 00:01:12.000
Well, sometimes I see 38, I see her 49.
00:01:12.159 --> 00:01:14.239
Some places want R60.
00:01:14.640 --> 00:01:15.120
Really?
00:01:15.280 --> 00:01:15.519
Yeah.
00:01:15.680 --> 00:01:18.159
Oh no, Canada, the one something like that.
00:01:18.640 --> 00:01:22.159
But I used to do remember I did the energy audits.
00:01:22.400 --> 00:01:23.200
Yeah, I remember those.
00:01:23.359 --> 00:01:23.760
That's cool.
00:01:23.840 --> 00:01:24.719
It's been a while.
00:01:25.040 --> 00:01:36.079
It's been a long time since I did that, like 15 years maybe, but I had calculated our old house, adding insulation, the the return on it, okay.
00:01:36.799 --> 00:01:40.719
It was like 20 years out to break even on the cost.
00:01:40.959 --> 00:01:41.200
Yeah.
00:01:41.519 --> 00:01:50.480
So really, once you get past R 3036, it's a long stretch until you break even for that extra cost.
00:01:51.359 --> 00:01:51.840
Yep.
00:01:52.159 --> 00:01:54.239
So not always worth it.
00:01:54.400 --> 00:01:56.239
Need to do the math on that one.
00:01:57.200 --> 00:02:07.519
But if that's the case where your insulation is the level is low for today's standards, you do not need to take out that old insulation and add new.
00:02:07.599 --> 00:02:09.360
Just add some on top of it.
00:02:09.599 --> 00:02:10.319
That's all you need to do.
00:02:17.680 --> 00:02:30.639
If you have an insulation contractor or uh a pest remediation company, like let's say like rodents or something like that, tell you you need to get rid of the insulation because it's old, that's not correct.
00:02:30.879 --> 00:02:40.159
Now, if it's contaminated with say a ton of rodent urine, raccoon poop, bat guano.
00:02:40.719 --> 00:02:42.639
That is a good reason to get it out.
00:02:42.960 --> 00:02:48.719
But you don't need to get rid of all of it, just the parts that are contaminated.
00:02:48.960 --> 00:02:52.719
But age is not a factor on getting rid of the insulation.
00:02:52.800 --> 00:02:55.360
Now, my compact is not a deficiency.
00:02:55.599 --> 00:02:57.360
Age is not a material defect.
00:02:57.520 --> 00:03:01.520
Like we have seen water heaters 50, sometimes 60 years old.
00:03:01.680 --> 00:03:03.039
And those things still work.
00:03:03.280 --> 00:03:04.639
Still working fine.
00:03:04.800 --> 00:03:06.159
It's not a material defect.
00:03:06.240 --> 00:03:08.240
Now it would be a smart thing to go.
00:03:08.560 --> 00:03:09.280
I need a budget.
00:03:10.400 --> 00:03:13.919
I need to have the money put aside because this is probably going to go.
00:03:14.000 --> 00:03:14.560
But you know what?
00:03:14.800 --> 00:03:18.800
It is probably gonna go Christmas Eve when I've got a whole bunch of people here.
00:03:19.039 --> 00:03:23.439
Yeah, but on that 60-year-old water here, it was probably gonna go for the last 40 years.
00:03:23.599 --> 00:03:24.800
So you're like, all right.
00:03:24.960 --> 00:03:26.960
So, but yeah, yeah, have the money aside for that.
00:03:27.120 --> 00:03:31.840
But unless your insulation is contaminated, do not remove it.
00:03:32.080 --> 00:03:37.199
Like you're talking about urine, you know, droppings, you got a squirrel's nest in there.
00:03:37.280 --> 00:03:41.599
Yeah, get rid of the squirrel's nest, block the holes where they are coming in.
00:03:42.960 --> 00:03:50.479
But if any contrast says, Yeah, your insulation is like 20, 30 years old, it's kind of used up, it's useful life.
00:03:50.639 --> 00:03:51.840
No, but that's bullshit.
00:03:52.000 --> 00:03:56.319
You can just add more onto it if it's lost, lost, it's loft.
00:03:57.120 --> 00:03:57.919
Say that again.
00:03:58.159 --> 00:03:59.599
It's lost, it's loft.
00:04:00.000 --> 00:04:02.000
It's not fluffy anymore.
00:04:02.719 --> 00:04:05.599
Now, sometimes like here's another thing.
00:04:05.840 --> 00:04:06.400
Cellulose.
00:04:06.479 --> 00:04:07.840
There's different types of insulation.
00:04:07.919 --> 00:04:10.960
There's a cellulose, which is really just ground-up newspapers, really.
00:04:11.360 --> 00:04:14.159
And they put borate in it so it doesn't catch fire.
00:04:14.400 --> 00:04:16.160
I think that's what they put into it.
00:04:16.480 --> 00:04:22.079
It is dusty, but it's not gonna automatically make your house dirty.
00:04:22.319 --> 00:04:27.279
If you're getting air from your attic into your house, you need air sealing.
00:04:27.360 --> 00:04:28.720
You need you have a problem.
00:04:28.800 --> 00:04:32.480
You just need to get rid of that access from the attic to the house.
00:04:32.639 --> 00:04:35.439
Yeah, just block off the little gaps or letting it come in.
00:04:35.519 --> 00:04:36.399
That's what you need to do.
00:04:36.480 --> 00:04:40.160
You don't need to rip it out and put in fiberglass to have a cleaner house.
00:04:40.240 --> 00:04:42.879
No, you need to seal up the gaps that you have.
00:04:43.360 --> 00:04:47.360
Habitation investigation is the way to go.
00:04:47.759 --> 00:04:50.560
For a home inspection in Ohio.
00:04:51.519 --> 00:04:55.279
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00:04:55.439 --> 00:04:58.639
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00:04:59.279 --> 00:05:03.759
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00:05:04.160 --> 00:05:08.000
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00:05:09.839 --> 00:05:15.680
Cellulose is good because actually, cellulose, when it settles, it kind of blocks some of those air gaps a little bit.
00:05:15.839 --> 00:05:16.959
It's a weird little spot.
00:05:17.040 --> 00:05:19.920
So cellulose, totally cool with that.
00:05:21.759 --> 00:05:28.639
And contaminated attic air should not make you sick because it should not be entering your house in the first place.
00:05:28.959 --> 00:05:35.439
So, once again, air seal, seal up those gaps between your ceiling and your attic space, seal those things up.
00:05:35.600 --> 00:05:37.120
That's all you need to do.
00:05:38.319 --> 00:05:47.680
Now, if your insulation is wet, moldy, you know, dirty from some other physically ruined for something, that makes kind of that makes sense to get rid of it that way.
00:05:48.160 --> 00:06:02.000
But if it was just like got wet from like a leak, but it's not moldy, and it especially if it's fiberglass where it's not a food source for molds, dude, maybe just fluff it up and add some more insulation on top of it.
00:06:02.079 --> 00:06:03.360
That's all you need to do.
00:06:04.800 --> 00:06:08.560
Any other thoughts you have regarding the insulation, Laura?
00:06:08.959 --> 00:06:15.360
This is not a very uh long one here, but but I think it's important so that people aren't getting scammed.
00:06:15.920 --> 00:06:19.439
Just because insulation is old does not mean it needs replaced.
00:06:19.680 --> 00:06:20.000
Correct.
00:06:20.079 --> 00:06:32.079
And I remember talking to uh an animal control guy, and there I think we sent a quote to him to look it over for a client.
00:06:32.319 --> 00:06:33.600
I think I remember this.
00:06:33.839 --> 00:06:43.199
And he's like, Yeah, you probably don't need to remove all this, because I think one they want to charge like$13,000 to pull out the insulation and put new in.
00:06:43.360 --> 00:06:49.120
And he's like, You probably could just spray it with a disinfectant, maybe, and that would work.
00:06:50.720 --> 00:06:54.319
So, yeah, just be careful if somebody wants to just automatically replace things.
00:06:54.399 --> 00:06:56.560
So that's not always necessary.
00:06:56.879 --> 00:06:59.279
It is necessary for that for that for their profit margin.
00:06:59.519 --> 00:07:13.199
Here's what you should do: get three separate quotes and then contact us to go over those and review what is essential for your house and what isn't, and then go with the quote that does the best job of being honest.
00:07:13.519 --> 00:07:14.079
Yeah, yep.
00:07:14.160 --> 00:07:19.199
Or talk to the talk to one of the contract contractors you feel uh really more comfortable with.
00:07:19.279 --> 00:07:24.959
But may I gotta tell you though, some cheaters can be very smooth in how they talk.
00:07:25.199 --> 00:07:26.000
Yes, they can.
00:07:27.040 --> 00:07:28.240
Think politicians.
00:07:28.560 --> 00:07:30.240
So that's about it, I think.
00:07:30.480 --> 00:07:34.959
Yeah, so just age does not is not a factor when it comes to insulation.
00:07:35.040 --> 00:07:41.680
Now, it won't be as lofty and provide as much insulation as it gets older.
00:07:41.920 --> 00:07:43.519
You just add more on top of it.
00:07:43.600 --> 00:07:45.120
That that's that's that's all you do.
00:07:45.279 --> 00:07:45.519
Yep.
00:07:45.759 --> 00:07:47.680
And that is not that's not a problem.
00:07:47.920 --> 00:07:53.759
I mean, depending upon your abilities, it's pretty much a do-it-yourself job, really.
00:07:53.920 --> 00:08:00.560
However, if you do it, make certain that you keep your attic ventilation open.
00:08:00.879 --> 00:08:09.279
That is important because we see that a lot where it hasn't been left open, and then you get a lot of condensation, you get a lot of moisture and mold up in the attic.
00:08:09.600 --> 00:08:16.879
Well, right along the if they have soffit vents, which those are the vents that are underneath the uh overhangs of your roof, the bottom edge.
00:08:17.360 --> 00:08:22.639
Often there'll be uh soffit vent there, let the hot let the cool air come in.
00:08:23.439 --> 00:08:25.839
But they're supposed to be it's called a baffle.
00:08:25.920 --> 00:08:30.879
Often it's like a foam board or maybe cardboard.
00:08:31.120 --> 00:08:36.879
But what that does, that keeps a gap between the soffit and the insulation.
00:08:37.039 --> 00:08:40.480
So that way the insulation can't roll over and block the soffit vents.
00:08:41.039 --> 00:08:50.639
So you gotta make certain those are there, or that the whoever sprayed the I was saying they blew in the fiberglass insulation and they don't block your vents.
00:08:50.960 --> 00:08:51.120
Right.
00:08:51.279 --> 00:08:53.519
Make sure that they unblock before they leave.
00:08:53.840 --> 00:08:57.039
Yes, yes, because that will here's what happens.
00:08:57.120 --> 00:09:02.879
If you if your vents are blocked, your attic space will get hotter than normal, hotter than you want.
00:09:03.279 --> 00:09:21.440
It's common for it to be warmer anyway, but the kind of a general rule of thumb is if your attic temperature about halfway up one of the uh wooden members is 30 degrees hotter than the outside air, you don't have enough ventilation.
00:09:21.679 --> 00:09:22.559
You have a problem.
00:09:22.799 --> 00:09:23.440
Yep.
00:09:24.159 --> 00:09:28.159
So and when we do that, we don't measure the underside of the roof, the sheathing.
00:09:28.480 --> 00:09:29.440
We don't measure that.
00:09:29.600 --> 00:09:35.679
That's gonna be hotter basically just because of the uh color of the shingles will make it hot.
00:09:36.080 --> 00:09:41.840
So that's why we measure up um halfway about halfway up the height on a piece of wood going up there.
00:09:42.399 --> 00:09:47.759
So that is important because if you don't have proper ventilation, your ad will get hot.
00:09:48.000 --> 00:09:50.639
You could get condensation issues up there.
00:09:52.960 --> 00:09:54.240
Your roof won't last as long.
00:09:54.480 --> 00:10:05.360
You your shingles, you lose about I heard three to five years life on your shingles because if they're excessively hot, I think the highest attic temperature we ever had was 165 degrees.
00:10:05.519 --> 00:10:06.399
That's insane to me.
00:10:06.559 --> 00:10:11.679
Those shingles are bacon, they're gonna be done in like 10 the and the I remember this.
00:10:11.840 --> 00:10:17.200
This was three-dimensional shingles, go for 25 years, probably 15, 20.
00:10:17.279 --> 00:10:20.000
They they they probably cut the lifespan about half on these things.
00:10:20.240 --> 00:10:21.120
It was that bad, eh?
00:10:21.360 --> 00:10:23.679
It was it was stupidly hot.
00:10:23.919 --> 00:10:25.279
So that's crazy.
00:10:25.440 --> 00:10:28.720
I did not go to work that day to be in a sauna.
00:10:28.879 --> 00:10:36.879
I do I like to do sauna my own time, especially when I'm not like fully dressed or work gear, and then I gotta go back in the house and I'm drenched with sweat.
00:10:37.120 --> 00:10:39.120
Yeah, well, that's not healthy for you either.
00:10:39.279 --> 00:10:40.639
It's not the safest thing to do.
00:10:40.720 --> 00:10:41.759
Not at least not for long.
00:10:41.919 --> 00:10:42.240
No.
00:10:42.480 --> 00:10:44.080
So I think that's it on this one.
00:10:44.159 --> 00:10:48.320
So yeah, insulation salesman tells you your insulation's past this useful life.
00:10:48.559 --> 00:10:54.559
Get a new uh insulator, just let them talk, get the get the information, get get the measurements, and then send it.
00:10:54.960 --> 00:10:55.759
Send them on his way.
00:10:56.000 --> 00:11:01.039
Send it those measurements and information to another contractor and and and tell him upright.
00:11:01.200 --> 00:11:04.720
I know that's bullshit that he wants to sell me because the installation is old.
00:11:06.000 --> 00:11:08.000
This is what and tell him what you're looking for.
00:11:08.159 --> 00:11:08.480
Yep.
00:11:08.639 --> 00:11:09.519
Sounds like a plan.
00:11:09.679 --> 00:11:10.320
Thanks, everybody.
00:11:10.480 --> 00:11:10.720
Bye.
00:11:10.960 --> 00:11:11.600
Bye bye.