Residential Commercial Agriculture Attic Floor Crawlspace
Smart Barrier
A heavy-duty 12-mil reflective sheet that works as a radiant barrier and a vapor barrier in one. The reinforced woven core resists tears and punctures, so it holds up on demanding jobs: roof underlayment, metal building liners, livestock barns, and crawlspaces.
Features & Benefits
What makes it work
- 12 mil multi-layer reinforced composite: metallized low-E foil face + white polyethylene woven reinforcement
- 95% reflectivity / 0.05 emittance for strong radiant heat control
- 0.002 perms (ASTM F1249)
- Class A / Class 1 fire rating (flame spread & smoke development)
- PASS - No Growth (ASTM C1338)
- Extra heavy-duty, tear- and puncture-resistant construction
- Clean, smooth, washable white finish for bright interiors and easy maintenance
- 76" coverage width for faster installs and fewer seams
- User-friendly - easy to cut, install, and seal joints
- One-side reflective / one-side white woven (silver/white finish)
- Works alone or in hybrid assemblies with mass insulation
Where it's used
Installation locations
Residential Buildings
Roof Insulation (Underlayment)
Metal Structures / Carport / Commercial Buildings
RoofWall
Hogs or Poultry Livestock Buildings
RoofWall
Ordering
Available variants
| Name | SKU | Width | Length | Coverage | Weight | Mil |
|---|---|---|---|---|---|---|
| 76" x 158' 1000 ft² | AG-76-3M-MR-S1000 | 76" | 158' | 1000 sq ft | 45 lbs | — |
Technical Data
Specifications
| Property | Spec |
|---|---|
| Standard roll size | 76 in × 158 ft |
| Thickness (mil) ±5% | 12 mil |
| Standard roll weight (lb) ±5% | 39 lb |
| Emittance (metallized foil side) | 0.05 |
| Reflectivity | 95% |
| Resistance to fungi (ASTM C1338) | PASS — No Growth |
| Water vapor transmission (ASTM F1249) | 0.002 perms |
| Fire rating (flame spread & smoke development) | Class A / Class 1 |
Performance Data
Thermal performance
| Assembly | Heat-Flow Direction | Typical R-Value |
|---|---|---|
| Attic/Roof | Heat flow down | R-12.46* |
| Wall | Heat flow horizontal | R-5.54* |
- R-values represent estimated and potential heat resistance for our insulation in the proposed application.
- Actual performance depends on air film size, temperature, surface condition, and airflow direction (up, down, or horizontal).
- Calculations are based on RIMA, AIRAH, ASHRAE, and ISO 6946 standards, following ASTM procedures for air film resistance.
- When two air spaces are used, values assume still air conditions in both spaces.
- For a full R-value assessment, please contact us directly or your nearest dealer.
How it stacks up
Compare with similar products
| Specification | Smart Barrier (this product) This product | Radiant Barrier RB+ | Polyfoam PX50 | Polyfoam PX30 |
|---|---|---|---|---|
R-Value Thermal resistance. Higher is better. | R-5.54 to R-12.46 | R-4.1 to R-14.5 | R-7.43 to R-25.15 | R-7 to R-24.5 |
Applications |
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Use Case | ResidentialCommercialAgriculture | Residential | CommercialResidential | ResidentialCommercial |
| Get a Quote | View product | View product | View product |
Get started
Ready to order or have questions?
Find a distributor near you or contact our team directly.