Fire Protection News

Hilti Firestop Spray Without Overlap

August 29, 2022 - Have you ever had a project where you needed to exclude CFS-SP WB Firestop Joint Spray from overlapping onto adjacent assemblies? Hilti is now offering systems to accommodate this topic: HW-D-0929, FF-D-0155, FW-D-0101, and WW-D-0269.

The systems referenced above all allow for the application of CFS-SP WB without overlapping the sealant onto adjacent assemblies. This allows for more options in field conditions where excluding overlap is beneficial. It is important to note that these systems also come with reduced movement capability compared to systems that do require the overlap. 

4-Hr Joint Systems With Sealant

August 29, 2022- Happy to announce that we have increased the assembly ratings on HW-D-0209 and BW-S-0002 to include 3-hr and 4-hr conditions. These are systems that allow for options amongst our portfolio of sealants (CP 606, CFS-S SIL GG for HWD-0209; CP 606, CFS-S SIL GG, FS-ONE MAX, and CP 605 for BW-S-0002).

Our new HW-D-0209 allows a max 3/4" joint with 16% extension and 33% compression, OR a max 7/8" joint with max 43% compression only. So we are providing great movement capability on the market. Moreover, the Hilti solution provides air leakage ratings. Our Fire Protection Design Team can address up to a max 1" joint if needed on both HW-D-0209 and BW-S-0002.

Mass timber firestop listings now available

November 19, 2021 - We are excited to announce that Hilti is the first in the industry to have listed systems available for firestopping in mass timber. Mass timber construction has been on the rise in recent years, and Hilti has become a leader in offering superior solutions for the firestopping needs of complex mass timber projects.

Until recently, there were no listed firestop systems for mass timber in North America, and Engineering judgments were frequently needed to address firestop applications. Hilti has five firestop Listings for Mass Timber in Accordance with ASTM E814/UL 1479: HI/PF 120-07, HI/PF 120-08, HI/PF 120-09, HI/PF 120-10, and HI/PF 120-11. 

Expanded library of UL listings for Firestop Composite Sheet

March 25, 2021 - Hilti has successfully tested a new cUL Systems for the CFS-COS Firestop Composite Sheet, C-AJ-5444. C-AJ-5444 is a new option for firestopping insulated metallic pipe applications with composite sheet. Along with the composite sheet, wrap strips with a retaining collar are installed around the penetrating items.

This system aligns with Hilti's value-added service of cutting composite sheet. By providing Hilti's Project Management Team with project drawings that include the dimensions of each opening, Hilti can pre-cut the composite sheets prior to delivery, allowing for quicker installation on the job site –  saving time and labor.

UL Case Study on Firestop System Movement Now Available

February 1, 2021 - Hilti and Underwriters Laboratories (UL) collaborated on a recently published case study, "Standardizing Firestop System Movement Certification to Improve Building Safety.” This case study explores the impact of movement on the performance of through-penetration firestop systems and the ability of these systems to meet model building codes and firestop standard requirements after experiencing movement.

UL, Hilti and other firestop manufacturers collaborated on the development of ASTM E3037-16, Standard Test Method for Measuring Relative Movement Capabilities of Through-Penetration Firestop Systems. This standard provides a method to assess the performance of though-penetration firestop systems after experiencing movement. This case study describes the development and results of the new standard and corresponding certification program.

Hilti Firestop Putty Pads: Best in Class Secondary Attributes

January 22, 2021 - Hilti helps specifiers and building owners through providing some of the safest firestop products on the market. We design our firestop solutions to provide the best possible protection in all kinds of conditions – not just for fire performance, but also for important additional attributes of firestopping, such as sound transmission (STC) and pressure control. 

Hilti’s CP 617 Firestop Putty Pad has now been tested in accordance with ASTM E90 for a best in class STC performance in multiple install configurations. Taking this a step further, we have tested the CP 617 for pressurization capability, helping to ensure that building owners can meet the most stringent of energy efficiency protocols & infectious disease control.

Continued testing for Firestop Composite Sheet

January 4, 2021 - Hilti continues to advance testing with our innovative new firestopping products to expand the range of applications that can be addressed.

Hilti's newest UL/cUL system for CFS-COS Firestop Composite Sheet, C-AJ-8316, offers designers and installers an option FOR firestopping multiple penetrants, including cables and metal and insulated pipes, through concrete floor/wall or block assembly applications. This 3 Hour F-Rating system also incorporates the use of our CFS-CC Firestop Cable Collar, which is re-penetrable to allow future increases in cable capacity. CFS-COS Firestop Composite Sheets are fast and easy to install thin stainless steel sheets for sealing large openings when cables, pipes and mixed penetrants pass through.

New STC testing for Cast-in Firestop Sleeve for Metal Decks

December 21, 2020 - STC test reports are now available for CFS-CID MD Cast-in Firestop Sleeve for Metal Decks, the newest addition to the CFS-CID MD cast-in line. CFS-CID MD is the only cast-in firestop preformed solution for vertical pipes through metal decks that allows cutting through the sleeve after concrete pour, without requiring any additional firestop steps. This installation process provides peace of mind, as the cast-in device helps to remove scope for errors compared to traditional methods, leading to more reliable firestopping of vertical penetrations

All STC test reports for CFS-CID MD are available for download at the link below. An STC Test report Summary letter is also available for download, which can help facilitate easier STC documentation reporting on your projects.

CP 617 Putty Pads: Meeting the latest criteria for LEED & Green Building

December 18, 2020 - Green building standards continue to evolve due to project certification requirements, with recent industry advancements going far beyond energy efficiency. Hilti is actively re-engineering and re-formulating many firestopping solutions in accordance with the newest green certification criteria. We have removed or limited hazardous substances, minimized emissions, increased recycled content and responsibly sourced raw materials. Most recently, CP 617 Firestop Putty Pads, a critical and commonly used firestop product, has been improved to eliminate hazardous substances like formaldehyde generally found in other putty pad products in the market. 

This new generation of more conscious, greener putty pads is supported by detailed documentation and third-party sustainability credentials. Hilti’s CP 617 Putty Pads are now “Red List” compliant and as a result meet Living Building Challenge (LBC) requirements. The CP 617 Putty Pads have also been tested to the latest LEED VOC emissions standards, according to the California Department of Public Health (CDPH) standard method v1.2-2017. These updates support architects and owners in meeting the most current and relevant criteria on both LEED and LBC Projects and establishes the CP 617 Putty Pads as one of the best choices for electrical outlet box protection.

NEW VOC Emissions Testing Available for Firestop Solutions

December 4, 2020 - Sustainability is an important part of what we do at Hilti. We are committed to providing the most current, transparent documentation to support the use of many of our chemical firestop products on green building projects all over North America. Certification requirements continue to push green buildings towards the industry standard, and latest efforts go far beyond energy efficiency.


The Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers - Version 1.2 was issued by the California Department of Public Health. In accordance with one of the newest indoor air quality standards, CDPH v1.2 2017, we now offer several products with this updated VOC testing and certification, ranging from some of our new pre-formed joint firestop products, such as CFS-EOS QS Edge of Slab Quickseal and CFS-TTS MD Firestop Top Track Seal for Metal Deck to our innovative CFS-CID MD Cast-In Firestop Sleeve for Metal Decks  and CFS-BL Firestop Block. We also have updated documentation available for our traditional sealants, such as FS-One Max Firestop Intumescent Sealant and CP 606 Firestop Acrylic Sealant.

Find the most up to date documentation, including LEED and certification documentation on our Product Submittal Generator.

CP 617 Putty Pads: The Solution for Large Membrane Penetrations

November 30, 2020 - Hilti has designed and tested a specific listing to address “large membrane" openings with the use of our new Putty Pads CP 617. A penetration that only affects one side of a rated wall is referred to as a membrane penetration. Such penetrations occur frequently due to the installation of recessed electrical boxes. The International Building Code (IBC), which is adopted in most US jurisdictions, and the National Building Code of Canada (NBCC) 2015 and later require recessed fixtures be installed such that the fire resistance rating of the wall not be reduced.

One way to prevent boxes from reducing the wall’s fire rating and thus meet the code performance requirement is by using putty pads or other listed materials. Metallic electrical boxes that exceed 16 square inches (e.g., 4” x 4”) have the most stringent code requirements. In accordance with the IBC or NBCC, all recessed steel electrical boxes larger than 16 sq. in. must be protected in some manner, regardless of the spacing relative to other boxes on the opposite sides of wall. 
 
Hilti’s new UL/cUL Listing, W-L-7277, is designed to address recessed steel electrical boxes (18ga or heavier) with maximum dimensions of 20-18” wide by 42” high by 5-3/4” deep. This listing provides designers and installers with a tested and listed system to install for larger membrane penetrations and now allows for a listed system to be installed more readily in the field.

New Listing for CFS-EOS QuickSeal

September 14, 2020 - Hilti's CFS-EOS QuickSeal listing offering has now been expanded to include a tested assembly solution for precast concrete panels. Intertek listing HI/BPF 120-24 & HI/BPF 120-25 Perimeter Fire Barrier System offers designers and installers unprecedented speed and productivity when installing perimeter fire protection for precast concrete panel applications. CFS-EOS QS Edge of Slab Quickseal is Hilti's firestop preformed solution for sealing edge-of-slab joints with a high-speed, no-mess, spray-free installation.

*NEW* Angled Wall UL Listing for CFS-TTS MD Top Track Seal

September 8, 2020 - Hilti has released the industry’s first head-of-wall firestopping system for angled partition walls. The new listing - HW-D-0907 - uses CFS-TTS MD Top Track Seal, our new and innovative solution for firestopping metal deck head-of-wall applications. This new system will allow designers and contractors to install a tested and listed system for this increasingly popular wall design, instead of relying on engineering judgments for this application as was required in the past. F-ratings of up to 2 hours can be achieved with this system.

New Top Track Seal Installation Method and UL Firestop Systems

July 22, 2020 - We are pleased to announce a new method for installing Hilti Firestop Top Track Seal CFS-TTS, our pre-formed firestop solution for head of wall applications. Top Track Seal may now be post-installed, after wall framing and gypsum board is in place, by installing the material like a backer rod. Simply cut or tear the Top Track Seal in the middle and insert one half into the joint on each side of the wall to achieve a friction fit.

This allows the use of this innovative head-of-wall solution on projects where framing speed is critical and/or in remodel projects where the framing cannot be removed or replaced.

This installation method also results in improved performance and up to 3-Hr rated assemblies with the same great air-leakage and movement capabilities that Firestop Top Track Seal CFS-TTS typically offers. Find our two new firestop systems for this application here:

Through penetration firestop systems tested to withstand movement

April 24, 2020 - Over the life of a building, movement occurs - causing a penetrating item of a through penetration to move relevant to the hole, even when rigidly supported. This may impact the performance of a rated firestopping assembly. It’s important to have a method to consider movement and the impact on firestopping.

Hilti is the first manufacturer to have UL certified firestop systems with movement capability of the system tested and documented in the respective UL listings. We have successfully tested and certified a variety of our systems, from those that use sealants, such as FS-ONE Max, to preformed devices, such as the speed sleeve CP 653 or firestop blocks CFS-BL.