Product Info

3M Fire Barrier Pillows

Posted on December 4, 2020

3M Fire Barrier Pillows are a reliable, cost-effective, and easy-to-install fire protection product. These barrier pillows prevent fire, smoke, and toxins from easily spreading from one room or floor to another through through-wall openings. In this article, we highlight the product’s features, applications, and more.

3M Fire Barrier Pillows Overview

3M Fire Barrier Pillows are used to create a seal around through-wall openings, such as HVAC and cable pass-throughs. They protect from flames, smoke, and toxic gases for up to three hours. Made of high-quality, graphite-free materials, they can be used around electrical conduits without concern. The pillows are easy-to-install since they do not require the use of wire mesh. All of the above can make 3M Fire Barrier pillows a great solution for your next job, which we explain in further detail below.  

How Do 3M Fire Barrier Pillows Work?

3M Fire Barrier Pillows are intumescent, meaning they swell when heated and expand to form a “hard char” that provides a tight seal, preventing the spread of flames, smoke, and toxic gases. This hard char seal adds the necessary firestop protection for medium to large openings containing communication or power cables, conduits, and such for up to three hours.

Re-Usable & Re-Enterable

Both architects and contractors are turning to 3M Fire Barrier Pillows to meet fire-rating standards. They are ideal because they are self-contained, re-usable, and re-enterable fire stops. Since they are re-usable, they are an excellent temporary solution that you can use from job to job.

They are also re-enterable, which means they can be removed to access whatever they are sealing off and then be placed back into position. For instance, if you need to run more cables, you can remove the pillows that are in the way, install the cables, and “re-enter” the pillows into the opening.

Benefits of 3M Fire Barrier Pillows

3M Fire Barrier Pillows check off a lot on the desirable list for any construction product, from safety to affordability.

●      Tested for Safety:

○      3M Fire Barrier Pillows are firestop tested for up to three hours of protection (in accordance with ASTM E 814 - UL 1479)

○      Graphite-free composition which will not conduct electricity

●      Easy to Install: No wire mesh required, which makes these easy to install, inspect, remove and reuse as needed

●      Affordable: The upfront costs are very reasonable, with its value increasing even more due to its re-usability

●      High Quality: Excellent aging properties for long-lasting performance and durability

Recommended Applications for 3M Fire Barrier Pillows:

●      Prevents fire spread in medium to large openings containing power or communication cables and conduits. 

●      Concrete, block or gypsum walls and concrete floors

●      One or two able racks or trays per penetration

●      Blank openings up to 540 sq. in. (3,483 sq. cm)

●      Can be used with conduit bank, inner duct cable, and cable racks or trays

●      Designed to be used with 3M Moldable Putty+

We Can Help!

If you have an upcoming commercial job that needs a cost-effective fire protection solution, then easy-to-install, quality 3M Fire Barrier Pillows might be the perfect product. When you are ready, MacArthur Co. is here to help! Rely on our building materials experts to help answer any questions that you may have! 

ReadyFlash Technology

Posted on November 24, 2020

Carlisle and Versico have introduced ReadyFlash Technology in their flat and HD polyiso insulation products.  With a light CGF facer on one side and a dark CGF facer on the other, contractors have the option to increase or decrease the flash-off time for adhesives, based on their needs for the ambient temperature at the time of installation.  Check out this new technology at or

Quarrix Rigid Vent S-Series

Posted on June 3, 2020

Here at MacArthur Co., we are always looking for ways to provide our customers with the most appealing products with performance in mind.  MacArthur Co. is now partnered with Quarrix to offer their version of rigid roof venting.  Presenting the Quarrix Rigid Vent S-Series!  This “low-profile ridge vent creates an almost invisible appearance from the ground. Rigid Section has the most invisible profile creating a clean and neat roofline for a beautiful roof and greater curb appeal than other roof ventilation products."

Product Specs

  • Compatible with asphalt shingles, cedar shakes, flat tile, metal and stone-coated steel
  • Made from durable HDPE plastic
  • Pitches from 3/12 to 20/12
  • 12.7" to 19" NFA (varies)
  • 5/8" low profile or 1" high profile
  • Widths: 7", 9", 11 1/4"

Burke Vac-Q-Roof

Posted on February 18, 2020

In particular areas of the country, strong winds will test the stability of a roofing system and cause damage requiring expensive repairs. When designing a roofing system in these areas, one brilliantly created system is the Burkeline Vac-Q-Roof. Strategically placed Vac-Q-Vents create a vacuum under the roofing membrane when high winds cause the vents to spin. This system uses the power of the wind to secure the roof rather than blow it off! For further information, check out Burke Industries’ website.

Carlisle's FleeceBACK RapidLock Roofing System

Posted on January 24, 2020

Who doesn't have labor issues in this smoldering economy? One solution is to work with Carlisle's revolutionary membrane attachment method that provides a fully-adhered EPDM or TPO system without the use of adhesives. The FleeceBACK RapidLock Roofing System can help you reach 80% labor savings. Watch the Carlisle video below.

Vesta from Quality Edge

Posted on January 8, 2020

It’s finally here! The Vesta panel from Quality Edge! Vesta panel is a new “steel planking system inspired by the sleek aesthetic and weather-tight performance of shiplap. This bold and brave siding is born to turn heads. With eight interchangeable solid hues and four versatile and variegated woodgrains to choose from, styling options are limitless.” 

We are immensely impressed with the durability, sustainability, and versatility Quality Edge has so successfully enclosed in this beautiful siding system! 

Gaco Patch by Firestone

Posted on October 16, 2019

Firestone’s Gaco Patch can help you keep your customers dry through the winter. This product is a flashing grade, standalone silicone roof patch that can be installed in a one-step application, reducing labor time and getting rid of the need for primers and topcoats.

Can be used on:
-surface cracks
-control joints
-coping joints
-gutter seams
-membrane pinholes
-rain collars
-fish mouths, as pitch pan filler.

Versiflex Crossgrip Walkway

Posted on October 3, 2019

Have you seen Versico's Versiflex PVC Crossgrip Walkway roll? We are impressed with its features and benefits: slip resistance, outstanding membrane protection, compatible with PVC and KEE HP membranes, loose lay, no securement required, stable in winds up to 60mph, UV resistant, made from flexible PVC and Open grid, two-layer construction for exceptional drainage. To install, loose lay Crossgrip in areas of high traffic or around mechanical units that might need servicing. Ends can be held together by cable ties. Crossgrip should not be secured to the membrane in any way. If securement is required, order the standard walk pad. Please check with your local MacArthur Co. for pricing and availability!

Johns Manville Introduces Ultra Covering

Posted on April 25, 2019

Johns Manville recently introduced Ultra covering for their 800 Series Spin-Glas board. "You can be assured you are getting the same superior performance from the facing as the insulation because we manufacture both to the highest quality standards. 800 Series Spin-Glas board is easily fabricated for an excellent finished appearance on duct and equipment systems." The entire data sheet is available here.

Reflectix Duct Insulation

Posted on March 29, 2019

Reflectix Duct Insulation offers a dependable alternative to fiber insulation. Check out the submittal sheet for details.


Posted on March 12, 2019

Versico recently introduced 60-mil Non-Reinforced VersiGard® QA Black and White EPDM. Based on their test results, the product was very satisfying. If you would like to try this product or get more information contact your local MacArthur Co. branch. 

Every MacArthur Company location strives to meet the unique needs of their customers.