Builder Brigade
Region: US
Tuesday 07 July 2026 23:00:00 GMT
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Sad panda 🥓 :
Rockwool
2026-07-07 23:05:40
1096
rex :
fiberglass insulation after seeing all the nightmares with foam.
2026-07-08 02:06:04
897
porah borah express :
batt insulation, everyone will regret the foam in years to come
2026-07-08 15:05:28
98
Heidi Nelson :
Built my house with closed cell in 2012. I have saved so much on heating and cooling.
2026-07-08 17:37:18
62
Frosti Snow :
I’ll take itchy cotton candy for 500 Alex
2026-07-08 07:36:50
557
Giovanni :
None of them. Rockwool and a plastic vapor barrier which the manufacturer now recommends
2026-07-08 05:42:19
126
justinsimpson3906 :
Batt insulation. Wood MUST breathe or it molds and rots. I don’t think the increased r value is worth the damage it’s capable of in the long run.
2026-07-08 16:30:01
108
theperplexedlandlord :
What about rockwool?
2026-07-08 00:38:07
23
utilityconstruction :
100% Closed cell. All the hype about foam is horribly misleading because it always shows open cell on exterior which is a bad idea but people tend to go for the cheap alternative. Closed cell foam is hands down the best even over rockwool. No other insulation will give you 330-400 percent structural strength, 7.9R’s per inch and create an impermeable barrier.
2026-07-08 14:38:37
9
More hands Less work 2 🇺🇸 :
blown in cellulose. its in every wall of my house.
2026-07-08 13:49:51
12
DENT TECH :
Rockwool
2026-07-08 02:58:06
62
Zim :
A house has to breath, batts have been around forever. Foam seals a house up too tight.
2026-07-08 23:26:56
10
Not-fas-yote :
Never spray foam. I’m starting to see too many issues with moisture. Not to mention off gassing.
2026-07-08 10:39:46
18
Wynnie The Golden :
2”-3” closed cell and then batt i sulation
2026-07-08 03:38:17
17
fredmiller867 :
Fiberglass. The others deteriorate. 😁😁😁😁😁
2026-07-08 06:58:00
25
CLOUDRACER :
Skittles.. millions of Skittles..
2026-07-08 03:21:04
46
Sandman :
Don't leave the question open ended without discussing the pros and cons of each..
2026-07-09 05:28:08
9
Jeff Pfannenstein :
Rock wool
2026-07-08 02:49:29
11
mrbill6565 :
That depends on where you live and your climate.
2026-07-08 17:26:47
10
CaptMarkoRamius :
Zip-R on the exterior, rockwool in the stud cavity
2026-07-08 01:37:05
23
Fitz :
Thought this was ice cream at first, kinda disappointed ngl. 😔
2026-07-08 16:02:06
7
John :
Fiberglass is still here, so stick with what works!
2026-07-08 17:11:38
6
CCN1083 :
rockwool is the way to go tbh
2026-07-08 13:43:50
19
ov 😼🐈 🐈⬛ 😼💓 :
Batt insulation .
2026-07-08 05:00:16
7
D. Guerrero :
Batts. By the time you detect moisture in the foam, its way too late.
2026-07-08 00:17:25
10
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