Classic Max (LD-C-50V2)
Icynene Classic Max™ (LD-C-50-v2) - Now ignition barrier free! With an improved yield, the evolution of spray foam starts here! Icynene’s flagship tried-and-true product just got better. One and done application, saves you both time and money.
Performance Benefits
- Stable thermal performance
- R-value = 3.7 per inch
- Superior sound control.
- Vapor permeable, support bi-directional drying of assemblies
- Soft, flexible composition maintains an air seal even after seasonal expansion/contraction of building assembly
- <5% water absorption
- Supports indoor air quality by blocking air infiltration and mass transfer of moisture that may cause mold.
Characteristics
- Open-cell structure with air
- 100% water-blown
- Light density 0.5 lb.
- HFC- and PBDE-free
- Soft to touch
- Not a vapor barrier
- Expands ~100 times from liquid state
- Application thickness is not limited
- Low exothermic reaction temperature; will not harm coatings on electrical wiring, plumbing or other building components
- Lower cost compared to closed-cell products
- Lowest global warming potential (GWP of 1)
- A low-emitting material (LEM) as per CHPS EQ 2.2 Section 01350 (Collaborative for High Performance Schools)
Construction Benefits
- Yields of 18,000 to 22,000 board feet
- Broad range of substrates, temperatures and humidity conditions
- Superior cold temperature adhesion to multiple substrates
- Dimensionally stable
- 1 day occupancy
- One formulation (no winter/summer)
Thermal and Ignition Barriers
See ESR 1826 for details. Icynene Classic Max as an ignition barrier free product.
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Approved thermal barriers:
- DC 315 @20 wet mils. (13 dry mils, 80 sq ft/gallon)
- Alternatively, use a prescriptive thermal barrier
LEED Contributions
Icynene LD-C-50 meets prerequisites and may contribute towards these LEED for Homes points:
- EAC1.1: Optimizing Energy Performance
- EAC1.2: Optimizing Energy Performance
- EAC2: Insulation
- EAC3: Air Infiltration
- MRC2: Environmentally Preferable Products
Applications
Can be used in many residential applications.
Unvented attic
Vented attic
Cathedral ceiling
External wall (interior cavity fill)
Internal wall
Bonus room or cantilevered floor
Crawl space
Basement wall (internal side)
Rim joists
And many more applications – find an Icynene licensed contractor to check which Icynene products can be used for your project.
Limitations of Use
Should not be used:
- Against substrates that may exceed 200°F at installation or in the future
- Inside electrical outlets or junction boxes
- Flotation purposes
- Placed above the roofing membrane
- Exterior surfaces, exposed and/or in contact with water
Fire Summary
- ASTM E-84
- Flame index ≤ 25
- Smoke index ≤ 450
- Icynene products are Class 1/Class A Materials

