Best fire barrier caulk according to redditors

We found 2 Reddit comments discussing the best fire barrier caulk. We ranked the 2 resulting products by number of redditors who mentioned them. Here are the top 20.

1. 3M FIRE BARRIER MOLDABLE PUTTY STIX MP+, RED, 1.4 IN X 11 IN, 10/CASE

1 mention
3M FIRE BARRIER MOLDABLE PUTTY STIX MP+, RED, 1.4 IN X 11 IN, 10/CASE
Paint Chemicals Etc
Read Reddit commentsView price

2. 3M Fire Barrier Sealant CP 25WB+, Red, 10.1 fl oz Cartridge

1 mention
3M Fire Barrier Sealant CP 25WB+, Red, 10.1 fl oz Cartridge
Firestop tested for through penetration applications up to 4 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115Applied with conventional caulking equipment with excellent caulk rateSag-resistant properties offer clean application as well as strong adhesionWater-based and paintable sealan...
Read Reddit commentsView price
Next page

Top Reddit comments about Fire Barrier Caulk:

u/ender32708 · 10 pointsr/ender3

The wires run thru a short piece of metal conduit and the rest of the hole is plugged with fire putty. The rest of the vent holes are cover in HVAC foil tape.

3M MP+STIX Fire Barrier Putty https://www.amazon.com/dp/B00746006C/ref=cm_sw_r_cp_api_i_Ahg1CbCE4XSVT

u/clockworkdiamond · 1 pointr/howto

Not sure what your application is, but there are a couple of things that may do the job. I worked in a steel mill and had to walk on red-hot steel slabs. We would put this stuff on the seams of our boots to keep them from catching on fire. Probably wouldn't take much to flame proof that. Looks like they have a fire proof tape too.