Our fire barrier fits joint openings 1" and up.

Our fire and vapor barrier systems are designed to be used with most of our expansion joint cover assemblies. Each model is fire rated for either two or three hours, and allow for lateral shear, which is feature unique to the industry. All fire barrier systems are third-party tested for optimal performance.


Expansion Joint Covers Fire Barriers Reflex

Reflex? 1" - 4"

Stainless steel foil drape with block insulation affords maximum economy in material and insulation. Wall barriers require no stainless foil drape.
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Expansion Joint Covers Fire Barriers FB-17

FB-17 5" and up

Blanket-type fire barrier for floor and wall expansion joints. FB-17 has been tested and proven to provide up to 3-hour fire endurance rating for floor joints and up to 2-hour rating for wall joints, minimizing smoke passage. Available in 10’ lengths and engineered for simple splicing. Lateral shear movement option available.
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Expansion Joint Covers Fire Barriers FB-97

FB-97 13" and up

Multiple drape configurations of stainless foil and insulation utilize air pockets for additional insulation performance. Sliding frame is available for 200% lateral shear applications in floors.
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Expansion Joint Covers Fire Barriers HFR


This fire-retardant impregnated foam is pre-coated on both the upper and lower facing surfaces with a traffic grade silicone coating.
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Expansion Joint Covers Fire Barriers Monoflex

Monoflex? (OFX) 5" - 20"

Monoflex (OFX) fire barrier is a blanket-type barrier designed for 5" - 20" nominal floor and wall expansion joints.


*This model is not available for purchase in the US.

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Expansion Joint Covers Fire Barriers Multiflex

Multiflex? (MFX) 5" - 20"

Multiflex (MFX) is a patented system of insulation layers encapsulated in a stainless steel mesh. The mesh keep the insulation in place and allows up to 50% lateral shear, a unique feature in the industry.

*This model is not available for purchase in the US.

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Expansion Joint Covers Fire Barriers UltraBlock

UltraBlock 1" - 4"

This is a pre-engineered, patented and flexible textile fiberglass roll material with a fiberglass matte facing. It contains approximately 30% (by weight) un-expanded vermiculite. Joint sizes range from 1" to 4".
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Expansion Joint Covers Fire Barriers VFR


This pre-compressed fire-retardant impregnated foam has waterproof silicone on either facing side. Symmetrical in design, either side can face out from an exterior or interior wall.
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Expansion Joint Covers Vapor Barriers

Vapor Barrier

Our vapor barrier systems can be placed under or behind select expansion joint covers in exterior applications where protection from environmental elements needs to be maintained.
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Expansion Joint Covers Vapor Barriers Thermal Vapor Barrier

Thermal Vapor Barrier

Our thermal vapor barrier can be used horizontally or vertically in applications where insulated environmental protection needs to be maintained. Available with thermal R-values of R13, R19 and R30.
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We've Got it Covered

When it comes to expansion joint cover selection, you're not alone. We've got you covered with guides on sizing, waterproofing, fire barriers, building movement, and more.

Expansion Joint Covers Joint Sizing Simplified

Joint Sizing--Simplified

A critical element of proper joint sizing is to keep proper movement types and ranges in mind.

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Expansion Joint Covers Types of building movement

Types of Building Movement

Prior to selecting a cover, it is crucial to consider which type(s) of building movement your project might encounter.

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Expansion Joint Covers Joint Sizing Simplified

Building Types: Environments To Consider

When selecting an expansion joint cover system, it is important to consider the location and usage before a selection is made.
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Expansion Joint Covers Understanding fire rated expansion joints

Understanding Fire-Rated Expansion Joints

Fire-rated expansion joints are necessary to maintain building safety. Here’s how to incorporate them.

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Expansion Joint Covers Waterproofing an expansion joint

Waterproofing an Expansion Joint

There are several aspects to consider that help prevent water from leaking through the expansion joint and into your building.

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Expansion Joint Covers Questions to ask before selection

Questions to Ask Before Selection

Consider these topics on movement, safety, aesthetic, building resilience, and more when choosing the best cover for your building.

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General Considerations: What fire rating are you trying for?
• Be sure to select the appropriately UL listed product for the application
• Check that your job site conditions are the same as the UL Listing

Floor Installation Prep: Are your concrete surfaces properly prepared?
• Surface mounted covers require a square, clean joint
• Blockouts must be level for recessed covers
• Set the substrate at the correct elevation prior to the fire barrier installation

Wall Installation Prep: Are your substrates finished correctly?
• Drywall must be installed on the inside of the joint
• Joint edges must be parallel to one another
• Be sure the proper blocking connection points are made, if applicable
  (Typically needed in 2 hour rating situations)
• Be mindful of floor fire barriers above and below for proper transitioning

play video
4" Floor-to-Wall Reflex? (RFX) Installation
Performing an expansion joint cover transition from floor to wall is not an easy task, but with the help of our video and some practice, you will be able to master the RFX 4" floor-to-wall transition.
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Better Solutions

We understand that every project has its own special movement criteria, and that one of our standard designs may not be right for your project. We have a team of technical experts that can work with you to design a custom cover that meets your project’s specific requirements.

See examples of our custom solutions

Expansion Joints Covers Custom Stair Risers and Treads

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Firestop Contractors International Association
Firestop Contractors
International Associations

US Resiliency Council
U.S. Resiliency Council
Rating Building Performance in Natural Disasters


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