Expansion Joint

Easy to Handle and Install

This durable, lightweight, closed-cell, foam expansion joint is the solution for your concrete placement needs. It is flexible and can be utilized for curved or straight applications. Reflectix® Expansion Joint is sealant-friendly working well with a variety of common sealants. Additionally, the product is sturdy and will not prematurely break during job-site handling.

Recommended Products:
Expansion Joint
Expansion Joint, Foam - Roll
• EXP04050 (4” x 50’)
• EXP06050 (6" x 50')

• Lightweight - Over 11 times lighter than traditional products
• Resistant to moisture - Virtually zero water absorption
• Termite resistant - Does not facilitate destructive termites
• Material is CFC and HCFC-free
• Temperature friendly - Excellent range for cold or hot climates
• Reusable - Tear-off strip can be reused as a backer rod

Testing and Certification:
Reflectix® products are thoroughly tested at either nationally approved, independent laboratories or leading universities. Tests are performed to current American Society of Testing and Materials (ASTM) standards when a standard exists. To obtain a copy of our Product Testing Specifications, please refer to our website “Literature Tab” above. The documents are also available by e-mail at or call 800-879-3645.

Installation Instructions:
Download Pro Expansion Joint Installation Instructions 1114.pdf
Installation instructions and illustrated drawings are recommendations only, while proper local construction methods are the responsibility of the installer.

• Unroll and cut to length.
• Attach to adjacent material before pouring concrete. Attachment can be made with construction adhesive, nails or staples. Be sure that the top of the Expansion Joint is at the top of the intended concrete pour.
• Expansion Joint material includes a built-in “tear-off” strip. Place “tear-off” strip facing up if caulking is desired after concrete hardens. Put “tear-off” strip facing down if no caulking is planned.
• Pour concrete and finish. After concrete hardens, if “tear-off” strip was placed up, remove strip and seal area with appropriate caulking.
• Exceeds ASTM Standard D-7174.


Additional Resources:
F1 - Energy Saving Solutions for the Homeowner (Revised 0711)
F2 - Solutions for the Pro (Revised 0416)
Zip Code Zone Locator
This function provides regional installation recommendations for the following applications: Attic & Cathedral Ceiling
DIY Product Calculator Type:
Roof/Attic Application: Radiant Barrier Locate a Retailer
0 sq. ft. of roof/attic area 0 rolls
*Note: This calculator is for the convenience of our customers. These recommendations are for approximate product quantity.

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