Duct Insulation Outdoor R‑4.2

Reflectix® Outdoor Duct Insulation consists of two outer layers of aluminum foil that reflect 97% of radiant heat. The outside layer of foil is made of heavier foil. Each layer of foil is bonded to a tough layer of polyethylene for strength. Two inner layers of insulating bubbles resist conductive heat flow while a center layer of polyethylene gives Reflectix® high reliability and strength.

• Wrap rectangular or round ductwork in HVAC applications
• Heating costs can be greatly reduced
• Eliminate unnecessary heat loss / gain and air leakage
• Helps to ensure consistent temperatures
• Non-toxic / non-carcinogenic
• Fiber-free
• Lowers heating and cooling costs year-round
• Reflects 97% radiant heat
• Costs less to install
• Lightweight and clean
• Not affected by moisture or humidity
• Does not promote nesting of birds, insects or rodents
• Resists growth of fungi, mold and mildew
• Does not require protective clothing or respirators to install
• ISO 9001:2015 certified manufacturing location

• CDW48050 (48”x 50’)

• Temperature Range: 250 Operational
• Nominal Thickness: 5/16 inch (.312)
• Weight: 1.25 oz./sq. ft.
• Flame Spread Index (ASTM E 84): Less than 25
• Smoke Developed Index (ASTM E 84): Less than 50
• Fire Rating: Class A/Class 1
• Linear Shrinkage: None
• Reflectance (IR): 97%
• Water Vapor Transmission (ASTM E 96): 0.02
• Puncture Resistance: 60 lb./in.
• Mold and Mildew: No Growth
• Emittance: 0.03
• Tensile Strength: 3.7 N/mm
• Pliability: No Cracking
• Hot Surface Performance: Passed

Note: Not for use in direct contact on surface temperatures that are 180 F or greater.

• Thermal Performance ASTM C518
• Hot Surface Performance ASTM C411
• Flame Spread and Smoke Density ASTM E84
• Fungus Resistance Mil-Std 810B Method 508
• Pliability Test ASTM C1224
• Water Vapor Transmission ASTM E96
• Tensile Strength ASTM C751
• Emittance Testing ASTM C1371
• State of California
• State of California Licensed Insulation Manufacturer
• State of Minnesota: Filed with Minnesota Insulation Standards Program
• R&D Services Emittance Testing
• Warnock Hersey Professional Services, LTD: Physical Properties Sheet Width, Length, Pliability, Water Vapor Permanence and Aged Water Vapor Permanence Report # 1/92
• Warnock Hersey Professional Services, LTD: Water Vapor Transmission Test ASTM-E96 (Dessicant Method) Report # 1/91

Note: Installation instructions and illustrated drawings are recommendations only, while proper local construction methods are the responsibility of the installer. Standard Wrap (Circumference)

• Make sure all metal joints, seams and penetrations are sealed.
• Verify circumference of the duct.
• Cut the Reflectix® product to this length plus 1”.
• Wrap the product around the duct and securely tape the linear and circumference seams (overlapping 1”- 2”) with Butyl Foil Tape (goal is an air-tight, snug seam seal).
• Note: The heavier “reflective layer” side of the product should face the environmental elements.
• Do not leave any exposed duct or space where air can enter between the duct and the Reflectix®.

Please Note Regarding Hangers:

Strap Hanger: Wrap Reflectix® with the seam at the hanger. Tape seam tightly around hanger.

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).

Pictured: 1. Outdoor Duct Insulation, 2 and 3. Outdoor Duct Insulation Close-up

N17 – R-4.2 Outdoor Duct Insul Submittal Revised 102022