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X-FOAM is a flexible, lightweight, closed-cell polypropylene expansion joint filler designed to help manage movement and reduce cracking in concrete structures. It’s non-absorbent, UV stable, chemical-resistant, and non-staining—offering long-lasting performance in both indoor and outdoor applications.
Ideal for sidewalks, driveways, plazas, pool decks, parking areas, and highways, X-FOAM can be used with hot- or cold-applied sealants and easily shaped around curves or irregular forms. It installs quickly, maintains its shape under compression, and meets ASTM D8139 and D1751 standards for concrete joint fillers—making it a durable, cost-effective solution for professional concrete construction projects.
Data Sheets
Product Data Sheet
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X-FOAM™
Flexible, Lightweight, Concrete Expansion Joint Filler
DESCRIPTION
X-FOAM expansion joint filler is a flexible, lightweight, non-staining, polypropylene, closed-cell expansion joint filler. It is a chemical-resistant, ultraviolet stable, non-absorbent, low density, cost-effective, compressible foam that offers an extended service life in both interior and exterior applications.
USES
X-FOAM is ideal for use as an expansion, contraction, and/or isolation joint in swimming pool decks, curb and gutter work, floor slabs, pavement patch repair, sidewalks, driveways, plazas, parking decks, highways, and airport runways. The use of X-FOAM expansion joint combined with proper sealing and joint design per American Concrete Institute guidelines can help reduce unwanted cracking and early joint edge deterioration.
FEATURES/BENEFITS
- Flexible, lightweight, and can be formed around curved objects.
- Can be used with both cold and hot applied joint sealants
- Easy to carry.
- Easy to install.
- Can be used in interior or exterior applications.
- May be easily scored with a razor tool to create a void for POURTHANE® or DECK-O-SEAL®
PACKAGING
| Thickness | Widths | Standard Lengths |
|---|---|---|
| 1/2″ (12.7 mm) |
3″, 3.5″, 4″, 5″, 6″, 7″, 8″ (76.2, 88.9, 101.6, 127, 152.4, 177.8, 203.2 mm) |
5′, 10′ (1.5, 3.05 m) |
| 1″ (25.4 mm) |
3.5″, 4″, 5″, 6″, 8″ (88.9, 101.6, 127, 152.4, 203.2 mm) |
|
| 3/4″ (19.1 mm) |
3.5″, 4″, 5″, 6″, 8″ (88.9, 101.6, 127, 152.4, 203.2 mm) |
SPECIFICATIONS/STANDARDS
- ASTM D8139-17: Standard Specification for Semi-Rigid, Closed-Cell Polypropylene Foam, Preformed Expansion Joint Fillers for Concrete Paving and Structural Construction
- ASTM D1751 (Extrusion, Compression Recovery, Water Absorption)
TECHNICAL DATA
| Test Method | Specification | Result |
|---|---|---|
| Compressive Strength per ASTM D545 | 30–60 psi (0.2–0.4 MPa) | >30, <60 psi (>0.2, <0.4 MPa) |
| Recovery per ASTM D545 | ≥ 80% | Pass |
| Extrusion per ASTM D545 | ≤ 0.10" (2.5 mm) | Pass |
| Density per ASTM D545 | ≥ 3.5 lb./ft.³ (56.07 kg/m³) | Pass |
| Water Absorption @ 24 Hours per ASTM D545 | ≤ 1% | Pass |
| Heat Resistance per ASTM D5249 | No observable shrinkage or disintegration | No observable shrinkage or disintegration |
| Freeze–Thaw Resistance per ASTM C666 (300 cycles) | No visual change | No visual change |
| UV Weathering per ASTM D4329 (1000 hours) | No observable change or cracks | No observable change or cracks |
| K Factor per ASTM C518 | — | 0.286 |
| R Value per ASTM C518 | 1/2" (12.7 mm) | 1.75 |
| 3/4" (19.1 mm) | 2.6 | |
| 1" (25.4 mm) | 3.5 |
APPLICATION
Attach X-FOAM securely to the existing concrete slab, coping, or form with tape or mechanical fasteners prior to pouring the next slab. Make sure that X-FOAM is level with the desired slab surfaces before finishing.
When using with hot-applied joint sealants, apply against the factory-formed edge. If not possible, please contact W. R. MEADOWS.
2024-05
