Register Login Logout Account
Choose Region: North America

2.5 Minutes To Stop A Fire – How SpecSeal® Patented Two-Stage Technology Expands The Margin Of Safety For Protecting Plastic Pipes

Two and a half minutes is often the difference between passing a fire test and failing one. In these situations money and time is at risk but not life and limb. In the last two years we’ve learned a great deal about plastic pipes. We’ve also learned a great deal about our own two-stage technology. SpecSeal® Collars and Wrap Strips have been tested in 25 separate installations. We’ve qualified the products for use with PVC, CPVC, ABS, ABS Foam Core, and FRPP (Fire-Retardant Polypropylene).

The most difficult installations involve vented pipes. In these installations a cap is placed over the end of the pipe that extends into the furnace to simulate the fire burning into the pipe. The end of the pipe sticking out of the furnace is left uncapped to allow the fire to be drawn up the pipe (the chimney effect). Once the cap burns off and the fire invades the pipe, it becomes a race to shut down the pipe before the fire burns out the pipe on the outside of the furnace. Our experience indicates that two and a half minutes is the approximate time limit for affecting this closure.

Advantages of Two-Stage Technology
• Faster Expansion
• Greater Volume of Expansion
• No Sodium Silicate Equals Better Water Resistance
• No Shrinkage
• Broader Temperature Range of Expansion

In comparative tests conducted with sodium silicate products, we have found that the fire actually blows out the top of the pipe for a brief period. In some cases, the firestop collar shut down quickly enough to prevent burn through. In others it did not. In these tests, we studied the results to attempt to determine the cause of the failures. We very quickly learned that the safe window was indeed very small. SpecSeal® Collars and Wrap Strips have successfully protected nonmetallic pipes in all 25 of those tests. These products have never failed a burn test. After each one of these tests, we studied the results to attempt to determine why we succeeded so well. We think we have finally accumulated enough data to point to an answer.

We frequently demo the rapid expansion of our products using a heat gun to expand a wedge that has been cut out of our dried sealant. The comparative test is quite dramatic and demonstrates a clear advantage over the competition. But how does this translate into actual performance in a fire? The first and most obvious difference is that fire never makes it up the pipe with SpecSeal® products. In all 25 tests, no flaming has been observed!

The second advantage is in the T Rating. Thermocouples placed on the pipe 1″ above the top surface of the test floor monitor the temperature rise of the pipe. Our tests indicate that for PVC temperatures of 400°F will not only constitute the end point for the T rating but will also damage the pipe so extensively that it will also fail the test due to a burn through at some point late in the test. Our testing indicated that in successful tests utilizing sodium silicate products, the temperature on the pipe reached 330°F on average. Unsuccessful tests very quickly exceeded the 400°F mark.

SpecSeal® Collars and field fabricated collars using SpecSeal® Wrap Strips generally hold the pipes down below 250°F.

The two and one half minute window is very small for sodium silicate products. In actuality, we are not sure exactly what the actual window might be for SpecSeal® products. The important factor in addition to time is temperature. We know that for products that might allow a potential 400°F temperature, two and a half minutes is all the time there is! In that same two and a half minutes, SpecSeal® products get the job done quickly with time and temperature to spare.

Beyond a quick and effective closure needed at the beginning of a test is the staying power needed to go the distance. SpecSeal® products may start the race like a champion 100 meter sprinter but they finish the race with the stamina of world class distance runner. Sodium silicate expands when heated but will melt and shrink as the temperature increases. In many designs, this shrinkage is compensated for using putty or sealant strategically placed around the perimeter of the collar where it attaches to the wall or floor surface. Our tests indicated that shrinkage in some cases was significant and led to a substantial temperature rise during the late stages of the test.

SpecSeal® Collars and Wrap strips will not shrink as the temperature increases and in fire exposures as long as 3 hours, maintained a full and densely packed char. Sealant is recommended as a smoke seal in all applications (even though some tests have been conducted using no sealant or putty what-so-ever). It is our determination that seals installed on the fire side will be largely ineffective in blocking smoke. The high performance properties of SpecSeal® Two-Stage Technology allow us to tackle even tougher applications. The installation methods generated for use with ABS Foam Core and Polypropylene pipes are identical to those for PVC (even though these materials are significantly more difficult to protect). Systems presently in use for sodium silicate products frequently require the pipe to be insulated in order to buy additional time for closure of the pipe.

So just how long is 2.5 minutes? In about the same time it took to read this page, a firestop collar would have had to expand and close in order to stop a fire. If you are using SpecSeal® Collars or Wrap Strips… relax! The job has already been accomplished with time and temperature to spare.

Fully Vented Pipes… A Challenging Test! Restricting the airflow though a pipe reduces the potential for fire to blow through the pipe. To make sure SpecSeal® Collars and Wrap Strips are up to the challenge of protecting plastic pipes, we have insisted upon fully vented testing. You can be sure that products and systems represented as suitable for DWV (drain, waste, vent) have been properly tested and evaluated.

Download PDF Here

 Industry Links

 Literature

userguide1

User Guide: North America

The perfect brochure to use as a reference tool for any STI Product on the market.

+ View Brochure PDF

userguide international

User Guide: International

Our complete product brochure designed for international markets.

+ View Brochure PDF

EZ-Path® Fire Rated Pathway

Our complete EZ-Path® product line in one convenient location.

+ View Brochure PDF

EZ-Path® Retrofit Device

Our complete brochure for the EZ-Path® Retrofit Device.

+ View Brochure PDF

EZ-Path® The Logical Choice

EZ-Path® saves time, money, and resources by removing ongoing downstream costs.

+ View Brochure PDF

Perimeter Fire Barrier Systems

STI is dedicated to providing our clients and partners with the industry’s most advanced cost-effective solutions for perimeter fire barrier systems.

+ View Brochure PDF

Wood Frame Brochure

STI’s Wood Frame fire & smoke products

+ View Brochure PDF

Available Literature:

+ User Guide: US & Canada
+ User Guide: Europe & Middle East
+ Electrical & DataCom User Guide
+ EZ-Path® Fire Rated Pathway

Your Name (required)

Email (required)

Phone Number (required)

Company (required)

Street (required)

City (required)

State (required)

Zipcode (required)

Country (required)

Literature Request (Name and Quantity)

Additional Message

 Warranty Information

Limited Warranty

STI warrants that its products will be free of defects for one year from the date of purchase. In the event a product does not conform to this warranty, the sole and exclusive remedy is, at STI’s option, replacement of the product or refund of the purchase price. The warranty provided herein shall be void and of no effect in the event that the product is not installed in accordance with STI’s published instructions, listed systems and applicable building and safety codes. THIS WARRANTY IS IN LIEU OF ALL OTHER REPRESENTATIONS AND EXPRESSED OR IMPLIED WARRANTIES (including the implied warranties of merchantability or fitness for a particular use) AND UNDER NO CIRCUMSTANCES SHALL STI BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING, WITHOUT LIMITATION, ANY LOSS OF REVENUE, PROFIT OR USE. Prior to use, the user shall determine the suitability of the product for its intended use, and the user assumes all risks and liability for subsequent use. No person other than an officer of STI is authorized to bind STI to any other warranty for any product for which this warranty is issued.

 CAD Detail Sheets

Detail sheets are documents grouped together with the most commonly used systems in five categories. These files can be downloaded as either a PDF or DWG file.

Click here to generate a custom Detail Sheet.

caddetails1

Construction Joints
View PDF | View DWG

Curtain Wall
View PDF | View DWG

Electrical-DataCom
View PDF | View DWG

EZ-Path®
View PDF | View DWG

Plumbing – HVAC
View PDF | View DWG

 STI Guide Specifications

 Data Sheets

Penetrations

  1. Caulks, Sealants & Putties
    Product
    Product Data Sheet
    Safety Data Sheet
    SSS Intumescent Sealant
    pdf_icon_small
    pdf_icon_small
    LCI Intumescent Sealant
    pdf_icon_small
    pdf_icon_small
    SIL Silicone Sealant (Non-Sag)
    pdf_icon_small
    pdf_icon_small
    SIL Silicone Sealant (Self-Leveling)
    pdf_icon_small
    pdf_icon_small
    PEN200 Silicone Foam
    pdf_icon_small
    pdf_icon_small
    WF Caulk
    pdf_icon_small
    pdf_icon_small
    LC Endothermic Sealant
    pdf_icon_small
    pdf_icon_small
    SSP Putty
    pdf_icon_small
    pdf_icon_small
    SSP Putty Pads
    pdf_icon_small
    pdf_icon_small


  1. Collars, Wrap Strip & Cast-In
    Product
    Product Data Sheet
    Safety Data Sheet
    CID Cast-In Firestop Device
    pdf_icon_small
    pdf_icon_small
    SSC Intumescent Firestop Collars
    pdf_icon_small
    pdf_icon_small
    LCC Intumescent Firestop Collars
    pdf_icon_small
    pdf_icon_small
    RTC Intumescent Firestop Collars
    pdf_icon_small
    pdf_icon_small
    BLU Wrap Strip
    pdf_icon_small
    pdf_icon_small
    BLU2 Wrap Strip
    pdf_icon_small
    pdf_icon_small
    BLU220, BLU230, BLU240 Wrap Strip
    pdf_icon_small
    pdf_icon_small
    RED Wrap Strip
    pdf_icon_small
    pdf_icon_small
    RED2 Wrap Strip
    pdf_icon_small
    pdf_icon_small
    SSW125, SSW250, SSW375 Wrap Strip
    pdf_icon_small
    pdf_icon_small


  1. EZ-Path Fire-Rated Pathways
    Product
    Product Data Sheet
    Safety Data Sheet
    EZ-Path 44+
    pdf_icon_small
    pdf_icon_small
    EZ-Path 33
    pdf_icon_small
    pdf_icon_small
    EZ-Path 22
    pdf_icon_small
    pdf_icon_small
    EZ-Path Retrofit Device
    pdf_icon_small
    pdf_icon_small
    EZ Firestop Grommet
    pdf_icon_small
    pdf_icon_small


  1. Electrical & DataCom Cabling
    Product
    Product Data Sheet
    Safety Data Sheet
    EZ-Path 44+
    pdf_icon_small
    pdf_icon_small
    EZ-Path 33
    pdf_icon_small
    pdf_icon_small
    EZ-Path 22
    pdf_icon_small
    pdf_icon_small
    EZ-Path Retrofit Device
    pdf_icon_small
    pdf_icon_small
    EZ Firestop Grommet
    pdf_icon_small
    pdf_icon_small
    SSS Intumescent Firestop Sealant
    pdf_icon_small
    pdf_icon_small
    LCI Intumescent Firestop Sealant
    pdf_icon_small
    pdf_icon_small
    SSB Intumescent Firestop Pillows
    pdf_icon_small
    pdf_icon_small
    Composite Sheet
    pdf_icon_small
    pdf_icon_small
    SSM Firestop Mortar
    pdf_icon_small
    pdf_icon_small
    Electrical Box Insert
    pdf_icon_small
    pdf_icon_small
    SSP Putty
    pdf_icon_small
    pdf_icon_small
    SSP Putty Pads
    pdf_icon_small
    pdf_icon_small
    FP Intumescent Firestop Plug
    pdf_icon_small
    pdf_icon_small
    Ready® Sleeve
    pdf_icon_small
    pdf_icon_small
    Ready® Split Sleeve
    pdf_icon_small
    pdf_icon_small
    EZ-Path® Series 33NEZ Smoke and Acoustical Device (Wall – Blue)
    pdf_icon_small
    pdf_icon_small
    EZ-Path® Series 33NEZ Smoke and Acoustical Device (Wall – White)
    pdf_icon_small
    EZ-Path® Series 33NEZ Smoke and Acoustical Device (Ceiling)
    pdf_icon_small
    pdf_icon_small
    EZ-Path® Series 44NEZ Smoke and Acoustical Device
    pdf_icon_small
    pdf_icon_small


  1. Electrical Circuit Protection
    Product
    Product Data Sheet
    Safety Data Sheet
    Cable Spray
    pdf_icon_small
    pdf_icon_small
    E-Wrap™
    pdf_icon_small
    pdf_icon_small
    Thermal Barrier Wrap
    pdf_icon_small
    pdf_icon_small


  1. Outlet & Panel Box Protection
    Product
    Product Data Sheet
    Safety Data Sheet
    Electrical Box Insert
    pdf_icon_small
    pdf_icon_small
    SSP Putty
    pdf_icon_small
    pdf_icon_small
    SSP Putty Pads
    pdf_icon_small
    pdf_icon_small
    Thermal Barrier Wrap
    pdf_icon_small
    pdf_icon_small


  1. Large Opening
    Product
    Product Data Sheet
    Safety Data Sheet
    SSB Intumescent Firestop Pillows
    pdf_icon_small
    pdf_icon_small
    Composite Sheet
    pdf_icon_small
    pdf_icon_small
    SSM Firestop Mortar
    pdf_icon_small
    pdf_icon_small


  1. Packing/Forming Materials
    Product
    Product Data Sheet
    Safety Data Sheet
    STI-SSAMW
    pdf_icon_small
    pdf_icon_small
    IIG (JM)-Type CW8
    pdf_icon_small
    pdf_icon_small
    IIG (JM)-Minwool 1200 Safing
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Firespan 40 & 90
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Impasse System Complete
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Impasse System Hangers
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Impasse System Spiral Anchors
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Safing
    pdf_icon_small
    pdf_icon_small
    ROCKWOOL-CurtainRock 40
    pdf_icon_small
    pdf_icon_small
    ROCKWOOL-CurtainRock 80
    pdf_icon_small
    pdf_icon_small
    Roxul-Safe
    pdf_icon_small
    pdf_icon_small


  1. Other
    Product
    Product Data Sheet
    Safety Data Sheet
    FyreFlange HVAC Firestop Angle
    pdf_icon_small
    pdf_icon_small
    Closet Flange Firestop Gasket
    pdf_icon_small
    pdf_icon_small

Construction Joints

  1. Joint Sprays
    Product
    Product Data Sheet
    Safety Data Sheet
    AS200 Elastomeric Spray
    pdf_icon_small
    pdf_icon_small
    Fast Tack® Firestop Spray
    pdf_icon_small
    pdf_icon_small


  1. Joint Sealants
    Product
    Product Data Sheet
    Safety Data Sheet
    SSS Intumescent Firestop Sealant
    pdf_icon_small
    pdf_icon_small
    LCI Intumescent Firestop Sealant
    pdf_icon_small
    pdf_icon_small
    SIL Silicone Sealant (Non-Sag)
    pdf_icon_small
    pdf_icon_small
    SIL Silicone Sealant (Self-Leveling)
    pdf_icon_small
    pdf_icon_small
    ES Elastomeric Firestop Sealant
    pdf_icon_small
    pdf_icon_small
    LC Endothermic Firestop Sealant
    pdf_icon_small
    pdf_icon_small


  1. SpeedFlex Joint Protection
    Product
    Product Data Sheet
    Safety Data Sheet
    SpeedFlex® TTG Track Top Gasket
    pdf_icon_small
    pdf_icon_small
    SpeedFlex® Joint Profile System
    pdf_icon_small
    pdf_icon_small

Curtain Wall

  1. Perimeter Fire Barrier Sprays
    Product
    Product Data Sheet
    Safety Data Sheet
    AS200 Elastomeric Spray
    pdf_icon_small
    pdf_icon_small
    Fast Tack® Firestop Spray
    pdf_icon_small
    pdf_icon_small
    Safing Spray
    pdf_icon_small
    pdf_icon_small


  1. All Weather Firestop Sprays
    Product
    Product Data Sheet
    Safety Data Sheet
    Fast Tack® Firestop Spray
    pdf_icon_small
    pdf_icon_small


  1. Anchor Protection
    Product
    Product Data Sheet
    Safety Data Sheet
    Connection Protection
    pdf_icon_small
    pdf_icon_small


  1. Curtain Wall Insulation Materials
    Product
    Product Data Sheet
    Safety Data Sheet
    STI-SSAMW
    pdf_icon_small
    pdf_icon_small
    IIG (JM)-Type CW8
    pdf_icon_small
    pdf_icon_small
    IIG (JM)-Minwool 1200 Safing
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Firespan 40 & 90
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Impasse System Complete
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Impasse System Hangers
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Impasse System Spiral Anchors
    pdf_icon_small
    pdf_icon_small
    Owens Corning Thermafiber-Safing
    pdf_icon_small
    pdf_icon_small
    ROCKWOOL-CurtainRock 40
    pdf_icon_small
    pdf_icon_small
    ROCKWOOL-CurtainRock 80
    pdf_icon_small
    pdf_icon_small
    Roxul-Safe
    pdf_icon_small
    pdf_icon_small


  1. Quick Clip Insulation Hangers
    Product
    Product Data Sheet
    Safety Data Sheet
    Quick Clip™
    pdf_icon_small
    pdf_icon_small
    Quick Clip™ L-Bracket
    pdf_icon_small
    pdf_icon_small

Smoke & Acoustical

  1. EZ-Path Smoke & Acoustical Pathway
    Product
    Product Data Sheet
    Safety Data Sheet
    EZ-Path® Series 33NEZ Smoke and Acoustical Device
    pdf_icon_small
    pdf_icon_small
    EZ-Path® Series 33NEZ Smoke and Acoustical Device (Ceiling)
    pdf_icon_small
    pdf_icon_small
    EZ-Path® Series 44NEZ Smoke and Acoustical Device
    pdf_icon_small
    pdf_icon_small


  1. Sealants & Sprays
    Product
    Product Data Sheet
    Safety Data Sheet
    Application Data Sheet
    Smoke N Sound Acoustical Spray
    pdf_icon_small
    pdf_icon_small
    pdf_icon_small
    Smoke N Sound Acoustical Sealant
    pdf_icon_small
    pdf_icon_small
    pdf_icon_small

Fireblocking/Draftstopping

  1. SmokeBlock
    Product
    Product Data Sheet
    Safety Data Sheet
    SmokeBlock® 136
    pdf_icon_small
    pdf_icon_small
    SmokeBlock® 200
    pdf_icon_small
    pdf_icon_small

 Approval Information

 Specification Review Services

Did you know that many specifications for firestopping reference older fire test standards or obsolete products?

Let our firestop experts assist by reviewing your firestop specifications and making appropriate recommendations. STI provides this service free of charge.

 The Burn Newsletter