Premium Crawl Space Encapsulation Supplies
Trusted by Contractors Across North Carolina
You need reliable crawl space materials, fast shipping, and expert support. That’s where we come in. The Crawlspace Supply Company helps contractors across North Carolina build better systems, win more jobs, and finish installs faster.
Premium Protection. Exceptional Price. Terminate Moisture for Good!
Introducing VAPORNATOR, a premium 12 mil cross-woven polyethylene vapor barrier available exclusively at The Crawlspace Supply Company. Each 12 ft x 100 ft roll provides 1,200 square feet of coverage for professional crawl space encapsulation projects.
Features & Benefits
Class A Vapor Barrier: Meets ASTM E1745 Class A classification.
Superior Moisture Protection: Water vapor permeance below 0.005 perms (ASTM E96).
Mildew Resistant: Made from virgin polyethylene that naturally resists mildew.
Low VOCs: Extremely low to nondetectable VOC levels.
Highly Durable: Tightly woven construction with excellent tear and puncture resistance.
Easy Installation: Pliable and wrinkle-resistant for a clean, professional finish.
Free Samples & Contractor Pricing
Try VAPORNATOR for yourself! Contact us for a free sample or to learn about our aggressive bulk purchasing discounts for contractors.
25-Year Limited Warranty
Covers product replacement or replacement cost. Excludes damage caused by corrosive chemicals, prolonged wastewater exposure, or other conditions resulting in unnatural product deterioration.
Product Specifications
Roll Size: 12 ft x 100 ft
Coverage: 1,200 sq. ft.
Thickness: 12ml
(ASTM E1745): Class A
Water Vapor Permeance (ASTM E96): <.005
Tensile Strength (ASTM D 751): MD 198 lbs / CD 180 lbs
Tear Strength (ASTM D 751): MD 60 lbs / CD 58 lbs
Bursting Strength (ASTM D 751): 155psi
Puncture Resistance (ASTM D 4833): 168n (>580lbf)
Methane Transmission Rate (ASTM D 1434): PASS
Temperature Range (Fahrenheit): -70 - 212
NOTE: Test datais based on a average of several production runs and should not be interpreted as min or max values. Values +/- 10%
Data Sheet
Vapor Barriers
Heavy-duty crawl space vapor barriers designed to block moisture, improve energy efficiency, and protect against mold and mildew.
Protect your crawl space from excess moisture and standing water with our Crawl Space Sump Kit—a professional-grade drainage solution designed for durability and performance. This all-in-one kit includes everything you need for a reliable sump pump installation, making it ideal for contractors and homeowners tackling crawl space waterproofing projects.
Kit Includes:
1 – Glentronics CIS-33V 1/3 HP Cast Iron Submersible Sump Pump
1 – Coupling
1 – 2 ft. 1/2 in. PVC Pipe
Sump Pumps
Reliable sump pumps, drain systems, and accessories that help manage groundwater and prevent standing water in crawl spaces.
Tackle high humidity and improve air quality in large crawl spaces and basements with the Aprilaire E100. This powerful 100-pint dehumidifier is engineered for professional-grade performance, making it a top choice for contractors and homeowners looking to protect their property from excess moisture. Its durable build and quiet operation make it ideal for long-term crawl space or basement encapsulation projects.
Removes up to 12.5 gallons of moisture per day
Perfect for large crawl spaces and basement environments
Low-maintenance, energy-efficient performance
Dimensions: 14" (W) X 15" (H) X 26" (D)
Dehumidifiers
High-performance crawl space dehumidifiers built for durability and efficiency in moisture-prone environments — ideal for long-term humidity control.
Seal and protect large crawlspaces with this complete Insulated Crawlspace Encapsulation Kit, designed to cover 1,100 to 2,100 sq ft with an average wall height of 3'. This bundle includes everything needed for moisture control, insulation, and air quality enhancement—ideal for contractors or homeowners looking for a premium, all-in-one solution.
Kit Includes:
3 – Encoat Seam Tape
Coverage:
Crawlspaces between 1,100 – 2,100 sq ft
Average wall height: 3’
Need a Custom Package?
Have a smaller, larger, or uniquely shaped crawl space? No problem! Give us a call, and we’ll customize your kit to perfectly fit your space and needs.
Encapsulation Kits
Protect your home from moisture, mold, and musty odors with our all-in-one Crawl Space Encapsulation Kits—trusted by contractors for lasting performance and easy installation.
The Insul Barrier Foundation Blanket is a high-performance insulation and vapor barrier solution designed specifically for crawl space and basement applications. This 4-foot by 25-foot roll provides 100 square feet of thermal protection and moisture control, helping to improve energy efficiency and reduce humidity in your foundation space.
Made from durable closed-cell foam with a heavy-duty reflective facing, this blanket reflects radiant heat while acting as a moisture barrier against ground vapor. It’s flexible, lightweight, and easy to cut and install with mechanical fasteners or adhesive.
Key Features:
Covers 100 sq ft (4 ft x 25 ft roll)
Ideal for crawl space and basement wall insulation
Acts as a vapor barrier and thermal reflector
Closed-cell foam core resists moisture, mold, and mildew
Increases home energy efficiency and indoor air quality
Easy to install on walls, rim joists, and foundation surfaces
Applications:
Crawl Space Wall Insulation
Basement Foundation Blanket
Vapor Barrier Under Skirting or Between Floor Joists
Residential & Light Commercial Use
Insulation
Insulation solutions that resist moisture, improve thermal performance, and are made specifically for crawl space encapsulation systems.
Encoat Heavy Duty Wall Tape is specifically designed for securing vapor barriers and insulation to foundation walls in crawl space encapsulation systems. This 1-inch wide tape is perfect for fine detail work where precision is key, such as vertical seams, wall liner attachment, or sealing overlaps in tight spaces.
Engineered with industrial-strength adhesive and a durable construction, this tape bonds firmly to concrete, masonry, and plastic sheeting to ensure long-lasting moisture protection.
Features:
1" width for targeted wall application and detail work
75-foot roll length for efficient coverage
Heavy-duty adhesive designed for foundation walls
Excellent compatibility with vapor barriers and liners
Ideal for crawl space encapsulation and moisture control
Tapes & Adhesives
Installation-ready sealants, adhesives, and fastening materials made for securing vapor barriers, insulation, and liners with lasting strength.
Industry Leaders for Over 30 Years
We know what it takes to encapsulate a crawl space — because we’ve done it in some of the toughest, wettest environments in the U.S. Our durable, easy-to-install materials help contractors work faster and offer better warranties. We provide free delivery, bulk pricing, and expert guidance tailored to your project. Our top priority is serving North Carolina contractors with fast, reliable support.