3M Fire Barrier Sealant CP 25WB+ - for Commercial, Industrial and Residential Applications - Cartridge, 10.1 fluid ounces - Red

3M Fire Barrier Sealant CP 25WB+ - for Commercial, Industrial and Residential Applications - Cartridge, 10.1 fluid ounces - Red

$ 11.98

Score By Feature

Based on 309 ratings

Value for money

9.90

Adhesion

9.90

Easy to use

9.48

OveReview Final Score

How Our Score Is Calculated

Product Description

COMPLIANCE WITH THE BUILDING CODE – seals openings with fire barriers where mechanical services pass through.

HELPS PREVENT FIRE SPREAD - when exposed to temperatures above 1000°F (538°C), it can expand up to three times its dried volume.

ONE PRODUCT, MANY APPLICATIONS – found in hundreds of UL Firestop systems with 4-hour ratings.

HVAC ducts and vents, pipes, blank openings, cables, through-penetrations, busways, combos, rated wall, floor and floor-ceiling assemblies, and more are just a few of the applications.

EASY AND CLEAN APPLICATION – It's easy to apply and doesn't make a mess because it doesn't require mixing and has sag-resistant properties.

USE IN ACCORDANCE WITH UL SYSTEMS – not designed for applications that are exposed to extreme temperatures on a regular basis, such as chimneys.

EXCELLENT ADHESION TO A VARIETY OF MATERIALS - Designed to adhere to a variety of construction substrates and penetrants.

SOUND DAMPING - acts as a sound barrier, reducing the amount of sound that is transmitted.

Questions & Answers

It's a water-based game, according to the description. sealant with a water base Will it dissolve if you put it in water after it has dried?

No, once fully cured, it will not dissolve if it comes into contact with water. It is water based, which means it cleans off your tools and hands with warm soapy water, eliminating the need for pain reliever.

Is it possible to use this to fix a chimney? It's a lined chimney with a damaged cap. If not, here are some suggestions. ?

Yes, in my opinion, but I'd double-check with a GC or the manufacturer. It's worth noting that this product is typically used to create fire barriers in order to achieve the desired fire rating. I'm not sure if it's intended to be used outside. Please contact the manufacturer for more information.

Is it possible to use this product to insulate the space around a brass and glass fireplace door?

Yes, this is possible.

Selected User Reviews For 3M Fire Barrier Sealant CP 25WB+ - for Commercial, Industrial and Residential Applications - Cartridge, 10.1 fluid ounces - Red

to use caulk as a fire extinguisher This is the one that I use

5/5

to use caulk as a fire extinguisher Plugging cable penetrations in fire/smoke walls is simple with a standard caulk gun. Because it makes a mess, I only use it during the early stages of construction, and I use 3M Fire Barrier Moldable Putty Stix (.

Gemma Macias

| Mar 31, 2021

It works like a sealant and is very easy to apply

5/5

Allow time for it to settle before using. Does a good job of adhering to the surfaces to which it is applied. When heated, the product expands and fills in small gaps. You can't pull apart the components without destroying them because the product is so well adhered. With this product, you only get one chance. I used it on a through-the-wall supply/vent for a wall-mounted gas furnace. It sticks to ductwork extremely well, almost too well.

Beckett Luna

| Jan 16, 2021

This is a fantastic item, but it should only be used for minor cracks

5/5

It's not suitable for large jobs because it's difficult to mold, but it's ideal for small cracks and holes. The rest was made of foam.

Ruby Aguilar

| Jun 16, 2021

It gets the job done

5/5

It sticks well, has a thick paste that doesn't drip, and is simple to apply around the water heater vent into the chimney. Cleaning hands and the floor with water is also simple. It's lovely.

Kayla Wilcox

| Oct 30, 2021

Extreme temperatures aren't a problem for this product

5/5

It was perfect for plugging holes and a chimney I installed on my Webber grill.

Ronald Hughes

| Dec 13, 2020

This is an excellent compound

5/5

Sandy texture with fibers that is easy to apply. It cures quickly while maintaining its shape. Much better than the smooth rubber silicone type at adhering to drywall and plastic.