Reflectix, Inc.

The World’s Largest Manufacturer of Reflective Insulation and Radiant Barrier Products
  • About Reflectix
    • Affiliations
    • Technical Support
    • Our Products, People & Service
    • Reflectix History 101
    • Reflectix Safety Guidelines
    • Testimonials
  • Reflective Technology
    • An Old Concept
    • Benefits
    • Performance Information
    • Reports and References
    • What About R-values?
    • Zip Code Zone Locator (for Attic & Cathedral Ceiling)
  • Applications
    • DIY
      • Attic
      • Basement Ceiling
      • Behind Hot Water Radiator
      • Cathedral Ceiling
      • Concrete Slab
      • Crawl Space R-16
      • Crawl Space R-21
      • Duct Insulation R-4.2
      • Duct Insulation R-6.0
      • Expansion Joint
      • Garage Door
      • House Wrap
      • Knee Wall
      • Pipe Wrap
      • Radiant Floor – Concrete Slab
      • Radiant Floor – Wood Joists
      • Snow Melt System
      • Storage Building
      • Unique Applications
      • Wall – Exterior (2 x 4)
      • Wall – Exterior (2 x 6)
      • Wall – Masonry
      • Water Heater
      • Wine Room
      • Work Shop
    • HVAC/R & Plumbing Contractor
      • HVAC Duct Insulation
        • Big Bubble
          • Big Bubble Duct Insulation R‑6.0
          • Big Bubble Duct Insulation R-8.0
        • Double Bubble
          • Duct Insulation R-4.2
          • Duct Insulation R-5.6
          • Duct Insulation R-6.0
        • Outdoor Insulation – Bubble
          • Duct Insulation Outdoor R‑4.2
          • Duct Insulation Outdoor R‑5.6
          • Duct Insulation Outdoor R‑6.0
          • Duct Insulation Outdoor R‑8.0
        • Fiber Duct Insulation
          • Fiber Duct Insulation R-8.0
      • Reflectix® Return Air Panning
        • RAP (Bubble) Return Air Duct Panning
        • RAP (Corrugated Sheet) Return Air Duct Panning
      • Pro
        • Attic
        • Crawl Space R-16
        • Crawl Space R-21
        • Expansion Joint
        • Pipe Wrap
        • Radiant Floor – Concrete Slab
        • Radiant Floor – In a Subfloor
        • Radiant Floor – Over Existing Floor
        • Radiant Floor – Wood Joists
        • Snow Melt System
        • Water Heater
    • Metal Buildings
      • Product: Reflective Both Sides
        • Roof – New
        • Roof – Retrofit
        • Wall – New
        • Wall – Retrofit
      • Product: Reflective One Side
        • Roof – New
        • Roof – Retrofit
        • Wall – New
        • Wall – Retrofit
    • Post Frame Buildings
      • Product: Reflective Both Sides
        • Roof – New
        • Roof – Retrofit – Bottom of Purlin
        • Roof – Retrofit – Bottom of Truss
        • Wall – New
        • Wall – Retrofit
      • Product: Reflective One Side
        • Roof – New
        • Roof – Retrofit – Bottom of Purlin
        • Roof – Retrofit – Bottom of Truss
        • Wall – New
        • Wall – Retrofit
    • Pro
      • Agricultural / Livestock Buildings
      • Attic
      • Cathedral Ceiling
      • Concrete Slab
      • Crawl Space R-16
      • Crawl Space R-21
      • Expansion Joint
      • Knee Wall
      • Radiant Floor – Concrete Slab
      • Radiant Floor – In a Sub-Floor
      • Radiant Floor – Over an Existing Floor
      • Radiant Floor – Wood Joists
      • Sill Sealer
      • Snow Melt System
      • Wall – Exterior (2 x 4)
      • Wall – Exterior (2 x 6)
      • Wall – Masonry
    • Shipping Products & OEM
      • Shipping Products
        • A/B Box Liners
        • Gusseted Bags
        • Mailer Pouches
        • Pallet Cover
        • Thermal Pouches
      • OEM
        • Capabilities and Benefits
        • How Does It Work?
        • Proven Applications
        • Product Specifications
  • Products
    • Concrete Slab Insulation
    • Double Reflective Insulation
    • Duct Insulation (Indoor and Outdoor)
    • Duct Insulation Spacers
    • Expansion Joint
    • Pipe Wrap Insulation
    • Radiant Barrier (Reflective/Woven Fabric/Reflective)
    • Return Air Duct Panning (Bubble)
    • Return Air Duct Panning (Corrugate)
    • Sill Sealer
    • Single Reflective Insulation
    • Tapes: Foil and White Poly
  • Literature
    • Air Space Requirements
    • Energy Tax Credit Certificates
    • Federal Trade Commission Fact Sheet
    • HVAC/R Literature and Submittals
    • OEM Literature
    • Pro Building Literature
    • Reflectix Safety Guidelines
    • Retail Literature
    • Shipping Literature
    • Safety Data Sheets
    • Technical Literature
  • Contact Us
    • Contact Information
    • Locate a Retailer
    • Questions / Suggestions

Media

Crawl Space R-21

Download Pro Crawl Space R21 Installation Instructions Rev 1114

Download Pro Crawl Space R21 Installation Instructions Rev 1114

Video Library

For addition videos,
click here.

We Visit the Cajun Contractor
Attic

Crawl Space R-21
HVAC Ducts – Pro Installer

Products Introduction
Locate a Retailer
Product Calculator
Federal Tax Credit Information
Reflectix, Inc. #1 School Street, (PO Box 108) Markleville, IN 46056 • Phone: (765) 533-4332 or (800) 879-3645 • Fax: (765) 533-2327 • Email: customerservice@reflectixinc.com
All Photos, Renderings, Illustrations and Literature are the Property of Reflectix, Inc. All Rights Reserved.