Reflective Aluminum Foil Insulation

• Aluminum Foil Insulation Description

  This double-sided reflective aluminum foil insulation acts as a radiant barrier, flame-retardant layer, and vapor barrier in one. Designed for installation outside traditional insulation materials such as glass wool, rock wool, mineral wool, and foam insulation, it improves thermal resistance by limiting radiant and conductive heat transfer.

  Ideal for residential, commercial, and industrial construction, it is widely used in walls, roofs, floors, HVAC systems, and metal buildings to enhance energy efficiency and moisture control.

  Unlike single-sided radiant barriers, our double foil insulation works effectively in multiple air spaces, maximizing reflective performance regardless of installation orientation. We use heavy-duty, reinforced scrim and flame-retardant adhesive to ensure a product that not only saves energy and reduces utility bills but also meets stringent safety and durability standards, offering long-term reliability where moisture control is crucial.

• Features & Benefits

  • Dual Reflectivity: Reflects radiant heat in both directions (in and out), offering year-round thermal control and comfort.
  • Energy Efficiency:High reflectivity (up to 97%). Helps reduce energy loss costs by 5% to 10% by maintaining a more stable indoor temperature.
  • Moisture Control: Acts as a high-performance vapor barrier. Prevents the passage of moisture and condensation, protecting structural materials from water damage and mold growth.
  • Durability: Reinforced with 3-way fiberglass scrim. The double foil insulation is tough, flexible, and resistant to tears, making installation easier and extending product lifespan.
  • Safety Rated: Flame-retardant CM Grade. Provides an extra layer of fire safety and ensures compliance with relevant building codes.

• Applications

  The versatility and high performance of our Double Sided Foil Insulation make it indispensable in a wide range of residential, commercial, and industrial settings:

  • Attics and Roofs: Installed under roof decking or in attics to block radiant heat from entering the living space, drastically reducing cooling costs.
  • Walls and Floors: Used in walls, ceilings, crawl spaces, and under concrete slabs to manage temperature and prevent moisture ingress.
  • Metal Buildings: Essential for insulating metal structures where the metal skin is prone to extreme heat transfer.
  • HVAC Ductwork: Wrapping ductwork to reduce heat gain or loss, preventing condensation on the exterior of the ducts, and maintaining HVAC system efficiency.

Technical Data

• Foil Insulation Composition

  Composition	Description	Value (English)	Value (Metric)
  Foil	Aluminum	0.28 mil	7 micron
  Reinforcing - MD	Fiberglass	2/inch	8/100mm
  Reinforcing - MD	Fiberglass	3/inch	12/100mm
  Adhesive	Polyethylene
  Kraft	Natural	30.7Ibs/3000ft2	50gsm
  Adhesive	Polyethylene
  Foil	Aluminum	0.5mil	12.5 micron

  Remarks

  • The data above are typical values only, and should not be used for specifications purpose.
  • Tolerance: Weight and Thickness: ±10%；Width:±3mm; Length: Log Roll: ±0.3m, Jumbo Roll: ±0.5%.
  • The products should be stored at room temperature, kept away from wet and heat source.
  • The users should take test and do trial-application on the above products before coming into application so as to witness and ensure suitability for their special purpose and technique.

• Foil Insulation Properties

  Physical properties	Test Method	Value (English)	Value (Metric)
  Basis weight	Scale	20.5bs / 1000 ft2	100gsm
  Permeance (WVTR)	ASTM E96, Procedure A	0.02 perm	1.15 ng/N.s
  Tensile Strength-MD	ASTM D828	41.0 lbs / In	180 N/25mm
  Tensile Strength-XD	ASTM D828	18.2lbs / In	80 N/25mm
  Burst Strength	ASTM D774	65psi	45 N/cm2
  Low temperature Resistance	ASTM D1790 4 hrs @ -40℉ (-40℃)	Remains Flexible No Delamination	Remains Flexible No Delamination
  High temperature Resistance	ASTM D1790 4 hrs @ +240℉ (+116℃)	Remains Flexible No Delamination	Remains Flexible No Delamination
  Emissivity	ASTM E408	0.03	0.03

  Available Roll Width: 1.25m

• FAQ:

  Q1: How does Double Sided Foil Insulation improve thermal performance?
  The dual reflective foil layers reflect radiant heat, while the inner layers help resist conductive heat transfer, improving overall insulation efficiency.

  Q2: Can it be used alone without other insulation materials?
  Yes, but for optimal results, it is recommended to use in combination with glass wool, rock wool, foam insulation, or mineral wool.

  Q3: Does this insulation also work in cold climates?
  Yes. It helps retain indoor heat in winter and blocks heat gain in summer, making it effective year-round.

  Q4: Is the material moisture-resistant?
  Yes. It functions as a vapor barrier, reducing condensation and protecting insulation layers from moisture damage.

  Q5: Does it need an air gap to work?
  A: Yes. Like all radiant barriers, the double-sided reflective aluminum foil insulation requires an adjacent air space (ideally at least 3/4 inch) to reflect radiant heat effectively.