Residential Crawlspace Basement
VaporMax Vapor Barrier
A heavy-duty 10–20 mil vapor barrier laid over crawlspace dirt or under concrete slabs to stop ground moisture and soil gases (including radon) from rising into the building. The reinforced film resists punctures from gravel and foot traffic and meets Class 1 vapor retarder requirements for code compliance.
Variants
Variant Images
Features & Benefits
What makes it work
- Heavy-duty Class 1 reinforced vapor barrier for crawlspaces and under-slab use
- Manufactured from non-woven HDPE geomembrane for strength and flexibility
- Meets ASTM E1745 standards for vapor retarders and durability
- Provides superior moisture, vapor, and gas resistance
- Controls humidity and prevents condensation damage
- Reduces radon and soil gas infiltration
- Prevents mold, mildew, and wood rot formation
- Prevents mold, mildew, and wood rot formation
- Prevents mold, mildew, and wood rot formation
Where it's used
Installation locations
Residential Buildings
Crawlspace Insulation
Ordering
Available variants
| Name | SKU | Width | Length | Coverage | Weight | Mil |
|---|---|---|---|---|---|---|
| 1200 ft² 10 mil 12' x 100' White on Black | VB-1200-10mil WB | 12' | 100' | 1200 sq ft | 48.5 lbs | 10 |
| 1200 ft² 12mil 12' x 100' White on White | VB-1200-12mil | 12' | 100' | 1200 sq ft | 56 lbs | 12 |
| 1200 ft² 14mil 12' x 100' White on White | VB-1200-14mil | 12' | 100' | 1200 sq ft | 68.5 lbs | 14 |
| 1200 ft² 16mil 12' x 100' White on White | VB-1200-16mil | 12' | 100' | 1200 sq ft | 78 lbs | 16 |
| 1200 ft² 20mil 12' x 100' White on White | VB-1200-20mil | 12' | 100' | VB-1200-20mil | 96 lbs | 20 |
| 300 ft² 12 mil Liner 3' x 100' White on White | VB-300-12mil | 3' | 100' | 300 sq ft | 12.25 lbs | 12 |
Technical Data
Specifications
| Property | Specification |
|---|---|
| Standard Roll Size | 12' x 100' (folded) |
| Thickness | 10–20 mil |
| Standard Roll Weight | 48.5–96 lbs |
| ASTM E1745 Class 1 | Pass |
| Resistance to Fungi ASTM C1338-08 | Pass – No Growth |
| Flame Spread, Smoke Development, and Fire Rating | Class 1 |
How it stacks up
Compare with similar products
| Specification | VaporMax Vapor Barrier (this product) This product | Radiant Barrier RB+ | Polyfoam PX50 | Polyfoam PX30 |
|---|---|---|---|---|
R-Value Thermal resistance. Higher is better. | R-4.1 to R-14.5 | R-7.43 to R-25.15 | R-7 to R-24.5 | |
Applications |
|
|
|
|
Use Case | Residential | Residential | CommercialResidential | ResidentialCommercial |
| Get a Quote | View product | View product | View product |
Learn more
Installation guide
Crawl Space Vapor Barrier Installation Guide
Step-by-step installation, product specs, and common mistakes to avoid.
Get started
Ready to order or have questions?
Find a distributor near you or contact our team directly.