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BrewBuilt™ Neoprene Carboy Sleeve

BrewBuilt™ Neoprene Carboy Sleeve

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Description

Have you been struggling with fermentation temperature swings? The BrewBuilt Neoprene Carboy Sleeve works great for maintaining the internal temperature of your 5, 6, or 6.5 gallon glass carboy. If you aren't fermenting in a temperature-controlled environment your beer is likely rising and falling with the ambient temperature, and these swings can stress out yeast and have a negative effect on the finished product. This 6 mm thick neoprene sleeve will help retain the heat naturally produced by fermentation activity and provide some protection from the ambient environment, leading to more consistent fermentation temps, happier yeast, and less off flavors in your beer.

We highly recommend the neoprene sleeve for use with the BrewBuilt Carboy CoolStix. The added insulation will lower the amount of cycles needed to maintain fermentation temperatures and is a must-have for cold crashing.

 

SKU Size Height (in.) Diameter (in.)
FE329A 5 Gal 14.75 10.75
FE329B 6 Gal 17.25 10.90
FE329C 6.5 Gal 17.50 11.20

 

Community Q&A

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Browse 5 questions Browse 5 questions and 13 answers
Why did you choose this?
MoreFlavor Store
to protect my glass carboy
M F on Jul 7, 2022
Stuck ferment cold temperatures
Ryan B on Dec 16, 2021
to protect my glass carboy
M F on Jul 7, 2022
to protect my glass carboy
M F on Jul 7, 2022
Stuck ferment cold temperatures
Ryan B on Dec 16, 2021
looking for more consistent temp control of glass carboy
Albert A on Jul 9, 2021
You listed cleat
Sam Van F on Feb 18, 2021
For carboys, don't have temp control chamber yet.
Mike N on Jan 27, 2021
Inefficient carboy chilling
Joseph T on Sep 26, 2020
Need insulation for my ferm temp control system
Michael Murdy on Aug 13, 2020
to protect my glass carboy
M F on Jul 7, 2022
looking for more consistent temp control of glass carboy
Albert A on Jul 9, 2021
Would it work for a 6gal plastic car boy?
Thomas Ratliff on Feb 23, 2021
BEST ANSWER: It's a little tight, but works fine for my 6 gallon glass carboy, and my 6.5 gallon glass italian carboy. So I imagine it should be fine for a plastic one. Note you'll probably still want something to insulate underneath as well.
Is there any reason this wouldn't work as kettle insulation for a 5-6 gallon kettle (Like the SS Brewtech)? I do electric BIAB and the dimensions are almost perfect for that application. With an induction cooktop I doubt the kettle would get hot enough to melt the neoprene. Thoughts?
Tysen Bibb on Apr 17, 2020
BEST ANSWER: This should work fine for that application since you are using an electric heater. Neoprene seems to have a burn/melting point over 250 degrees fahrenheit so it should be safe. That said I do recommend watching it diligently for the first few brews and you should always have a good fire extinguisher at hand any time you are brewing with any system just in case.
Can I still use a fermotemp wrap with this product on ?
Anthony Alex Michno on Nov 28, 2021
BEST ANSWER: Yep, I use a ferm wrap heater with the neoprene jacket over it to keep temps up. It works well, just remember to set it on a towel or something to help insulate the bottom.
Does this fit the 7 Gallon Fermonster?
Colten Zachary on Apr 28, 2020
BEST ANSWER: The size you will want for the 7 gallon fermonster is the FE329C made for the 6.5 gallon glass carboy. The Fermonster is 11.3" diameter and the jacket will stretch that last 0.1" to snuggly fit the fermonster.
Reviews

4.7 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
5
2
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Rated 4 out of 5
Fits Great on 5 Gallon Carboy
Only reason I didn't give it 5 star is the perfect design would have a bottom. I realize the descriptor is "sleeve."
July 26, 2022
Purchased
1 month ago
Rated 5 out of 5
What it says on the box
Still on my first use, but it seems solidly built and is easy to use. Has an open bottom, so super easy to put on. Done a great job keeping the ice consumption from our cooling system down
July 10, 2022
Purchased
1 month ago
Rated 5 out of 5
works great
I'm still using this for the first time, but it has kept a 5 gallon batch being fermented with Kveik yeast up at 85 degrees when paired with the fermwrap and an inkbird temperature controller. I was skeptical it could hold these temperatures and was worried it would struggle to keep it at 85 with the ambient temperature in my house being no higher than 65, and much colder at night. I'm going to set my temperature controller on my next batch using Kveik at 95 as I'm confident it will work.
April 6, 2022
Purchased
4 months ago
Rated 5 out of 5
It’s colder out than the last time I brewed and these sleeves enabled my batch to ferment at 68 degrees.
User submitted image
Added Dec 29, 2021
December 29, 2021
Purchased
8 months ago
Rated 5 out of 5
Pretty good insulator
Together with a stainless insert, the sleeve allows me to reach an external temperature in a carboy onky about 6° higher than my lagering chamber. Nice.
September 1, 2020
Purchased
over 2 years ago
Rated 4 out of 5
I works great with a 6.5 gallon Big Mouth Bubbler.
June 7, 2020
Purchased
over 2 years ago
Rated 5 out of 5
Carboy Sleeve
Great fit and seems durable!
April 22, 2020
Purchased
over 2 years ago