Crawl Space R-16

The Reflectix® Double Reflective Insulation consists of two layers of highly reflective film (96% reflectivity) that are bonded to two tough layers of polyethylene. Two inner layers of insulating bubbles and a center layer of polyethylene provide this easy to handle product with high strength and reliability.

• A labor reducer because of its easy to handle and install characteristics
• No need to insulate ducts or pipes between the product and the sub-floor
• Works great for retrofit installations
• R-16 and fiber-free
• Costs less to install than alternative insulations
• Does not require protective clothing or respirators to install
• Resists growth of fungi, mold & mildew
• Does not promote nesting of insects or rodents
• Vapor / Radon retarder
• When properly installed, prevents ground moisture from causing dry rot
• ISO 9001:2015 certified manufacturing location

Double Reflective Insulation (Reflective/Bubble)

• HVST16050 (16”x 50’)
• HVST24050 (24”x 50’)
• HVST48050 (48”x 50’)
• HVST16100 (16”x 100’)
• HVST24100 (24”x 100’)
• HVST48100 (48”x 100’)
• HVST16125 (16”x 125’)
• HVST24125 (24”x 125’)
• HVST48125 (48”x 125’)

• Temperature Range: -30 to 180 F
• Nominal Thickness: 5/16 inch (.312)
• Weight: 0.771 oz./sq. ft.
• Flame Spread Index (ASTM E 84): Less than 25
• Smoke Developed Index (ASTM E 84): Less than 50
• Mounting Method (ASTM E 2599)
• Fire Rating: Class A/Class 1
• Linear Shrinkage: None
• Reflectance (IR): 96%
• Water Vapor Transmission (ASTM E 96): 0.02
• Puncture Resistance: 60 lb./in.
• Mold and Mildew: No Growth
• Emittance: 0.04
• Tensile Strength: 3.7 N/mm
• Pliability: No Cracking
• Hot Surface Performance: Passed (250 F)

• Thermal Performance ASTM C1363
• Thermal Performance of Wall Systems ASTM C1363
• Thermal Performance ASTM C335
• Thermal Performance of Crawl Space ASTM C1363
• Hot Surface Performance ASTM C411
• Heat Transfer (Heat Flow Up, Down, Horizontal) ASTM C1363
• Thermal Performance of Reflectix® and Fiberglass in Walls ASTM C1363
• Heat Transfer of Air-Handling Ducts with Reflectix®
• Flame Spread and Smoke Density ASTM E84
• Mounting Method ASTM E2599
• Fungus Resistance Mil-Std 810B Method 508
• Pliability Test ASTM C1224
• Sound Absorption Test ASTM C423 and ASTM E795
• Sound Transmission Loss ASTM E90 and ASTM E413
• Water Vapor Transmission ASTM E96
• Tensile Strength ASTM D751
• Emittance Testing ASTM C1371
• Thermal Performance of Water Heater Jackets
• Intertek: Surface Burning Characteristics of Building Materials ASTM E84 (Taped Joint Detail) Test Report # 3166908SAT-012
• Intertek: Surface Burning Characteristics of Building Materials ASTM E84 (Unslit) Test Report # 3166908SAT-011
• R&D Services: Resistance to the Growth of Fungi ASTM C1338 Test Report # RD072713FR
• State of California
• State of California Licensed Insulation Manufacturer
• State of Minnesota: Filed with Minnesota Insulation Standards Program
• State of Wisconsin: Wisconsin Material Approval, Safety and Buildings Division Approval # 920088-1
• R&D Services Emittance Testing
• R&D Services: Physical Properties Sheet Width, Length, Pliability, Water Vapor Permanence and Aged Water Vapor Permanence
• R&D Services: Water Vapor Transmission Test ASTM E96 (Dessicant Method)

Note: This product is reflective on both sides and the direction of product installation is not pertinent to thermal performance.

Note: For this application it is recommended to use at least 3/8 inch staples that are Heavy Duty or Galvanized.

• Inspect the crawl space and make any needed repairs before installing the Reflectix® Double Reflective Insulation.
• Check the crawl space to determine whether the floor joists are 16” or 24” on-center.
• Determine if there are water pipes and heating ducts which hang below the floor joists. They will need to be insulated. Reflectix® Pipe Wrap and Duct Insulations are designed specifically for this use. There is no need to wrap water pipes or duct work that fall between floor joists. Reflectix® will provide adequate insulating without extra wrapping.
• Start at the end of the house and face staple to the bottom of the floor joists. Seal seams with Reflectix® Foil Tape to create a vapor barrier. At the end, staple up to the sub-floor or band board.
• Note: Existing mass insulation in the joist cavities must be dry prior to installing the Reflectix® product.

Review These Important Safety Guidelines Prior to Installation:

• ALWAYS check local building codes before installing Reflectix®.
• ALWAYS check the area you are insulating and make any needed repairs. Any worn wiring should be replaced before you begin installing Reflectix®.
• ALWAYS make sure work areas are well ventilated and well lighted.
• ALWAYS use eye protection when operating a staple gun.
• ALWAYS use caution and common sense when using a staple gun. Be aware of electrical wiring locations. Stapling into a wire can cause severe shock or death. NEVER staple into electrical wiring.
• ALWAYS be careful when working with large pieces of Reflectix® on windy days.
• When installing Reflectix® on bright sunny days, it is best to wear sun glasses.
• Do not work in areas such as attics when temperatures are too hot.
• Please Note: The intention of these Installation Instructions and 3-D renderings are for the sole purpose of illustrating the correct location and relative position of the Reflectix® products in specific building assemblies. The correct construction methods and techniques are the responsibility of the installer or contractor. The methods outlined are recommendations on location of the Reflectix® products as a guideline. There are no claims on the part of Reflectix, Inc. that these building assemblies are finite standards or meet building code requirements (as they can vary by region).

N39 – Reflectix Fact Sheet per FTC Rev 0118

Pictured: 1. Double Reflective Insulation, 2. Double Reflective Insulation with Staple Tab, 3. Tools for Installation, 4. Product Installation

F56 – R-16 Crawl Space Submittal Revised 102022