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Nomaflex® is an engineered foam joint filler that outperforms asphalt impregnated fiberboard and sets a new standard for concrete expansion joint fillers. It is a semi-rigid, closed-cell polypropylene foam that simply performs better and installs faster.

Plus, the innovative Nomaflex Cutter tool enables concrete installers to easily trim Nomaflex on the job site or pre-score a removable 1/2” void for use with sealants. This saves labor and money by eliminating the need for an additional void cap system.

How do we compare?

No breakage or waste Breaks during transport, handling and installation; 20% or more total waste
Does not absorb water Absorbs water, swells and flakes away over time
4" product - 5.6 lbs. per bundle - 75% lighter! 4" product - 31 lbs per bundle
Multiple bundles can easily be carried by one person Very heavy, difficult to carry one bundle
Can be used as a flexible form & re-used multiple times Will break when bent and is used only once due to moisture absorption
Acts as a natural bond breaker with concrete sealants Requires use of bond breaker tape with sealants
Clean product Contains sticky asphalt binder that will leach and stain the surrounding substrates
Pre-scored tear strip stays in place around curves and bends Plastic void cap will not bend
Tear strip is consistent and reliable Plastic void cap falls off and breaks easily
80% compression recovery 70% compression recovery
No smell Foul smell
Chemically inert Will come apart when exposed to many chemicals
Made from up to 50% recycled material and is 100% recyclable Made from cellulosic fiber and asphalt binder for one-time use
Meets ASTM D 8139; Meets ASTM D 1751 for extrusion, compression recovery and water absorption as tested per ASTM test method D545. Meets ASTM D 1751
Nomaflex is lightweight, it does not break and has no waste.
photo of deteriorating fiberboard in contractor yard
Asphalt-Impregnated Fiberboard is heavy and breaks easily, resulting in 20% waste.

Installed Cost Per Lineal Foot

Nomaflex Fiberboard
1/2" x 4" .55 .46
Waste None .09=20%
Void Cap Use Cutter .53
Total Cost .55 1.08 Nearly 200% higher!

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