Thermaflect Heat Shield Cloth

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Rated for:






Continuous operating reflective temperature of 1100°F, 2000°F intermittent

Capable of reducing up to 90% of radiant heat

Adhesive sticks most clean surfaces-not recommended for rough/unfinished fiberglass

Helps shield fire walls, hoods, body panels, floor boards

Bulk rolls and custom widths available, minimums apply

Proudly made in the USA

This heat shield cloth, has a high quality “mirror” finish compared to most other reflective aluminized cloth mats. In addition it weighs 40% less than comparable aluminized fiberglass cloth products. When used in applications when there is 1” of airspace and good air flow, Thermaflect Cloth is capable of reflecting 90% of radiant heat. The mirror like finish and light weight construction will blow the gold vinyl sticker stuff away with its reflectivity. Use it as a heat shield for: under your hood, on a fuel cell, aluminum intercooler pipes, air filter box, or turn your aftermarket intake into real cold air intake! To install, face the aluminized side toward the source of heat to shield heat away. This product withstands 1100-degrees Fahrenheit of radiant heat (requires minimum of 1” of airspace) and up to 450-degrees Fahrenheit of direct heat. Thermaflect Cloth is available with a high temperature peel and stick adhesive that will stick to almost any clean surface. It is not recommended for rough unfinished fiberglass or carbon fiber. Bulk heat shield cloth rolls available.

Download Thermaflect Cloth Instruction Sheet

 Thermaflect Cloth Installation tips:

  • Be sure to use a 1" air-gap between Thermaflect Cloth and heat source for best results
  • Thermaflect Cloth is intended to be applied on the cold side of panel or component, i.e. it is not intended to direct contact with heat source

Required tools:

  • Heavy duty scissors or utility knife 
  • Carburetor cleaner or other degreaser
  • Pre-paint cleaner or other non residue cleaner
  • 3M Super Trim adhesive or other spray adhesive (Part #710040 only)
  • Poster board, heavy paper - optional

PRO TIP - Use poster board or butcher paper to make a template. For surfaces with severe bends, it may be necessary to cut relief lines or wedges to get product to conform. Transfer template to Thermaflect Cloth and cut.

  1. Panel or component surface temperature should be at least 65°F, sticking onto anything colder may not allow adhesive to set up properly.
  2. Degrease and clean surface of any residual chemicals, using carburetor spray or other cleaner/degreaser.
  3. We strongly recommend rubbing the surface with a pre-paint cleaner or isopropyl alcohol (or other non-residue cleaner) after cleaning and degreasing. For part # 710040, without adhesive, skip to Step 7
  4. Carefully peel the adhesive backing off the Thermaflect Cloth. Start peeling from one corner.
  5. Lay the Thermaflect Cloth, start on one edge of panel or component and work out slowly to ensure no “bubbles” occur. Air bubbles will cause the material to not stick and fall off.
  6. Press the Thermaflect Cloth firmly onto the panel/component, hold while pressing down for 2 minutes. Skip to Step 9
  7. Non adhesive product only - Use 3M Super Trim or Super 77 Adhesive. After Thermaflect Cloth has been cut, spray back of cloth and panel or component you are applying Thermaflect Cloth to.
  8. Allow adhesive to get tacky and apply cloth, start on one edge of panel or component and work out slowly to ensure no “bubbles” occur. Air bubbles will cause the material to not stick and fall off. Press firmly for 2 minutes.
  9. Optional - If using edge tape like Cool Foil Tape, clean the edge of Thermaflect Cloth with the pre-paint cleaner or isopropyl alcohol.
  10. Optional - Pre-fit and trim tape to fit the Thermaflect cloth.
  11. Optional - It is important to do one edge/seam at a time with the edge tape.
  12. Optional - Peel adhesive backing off tape, press and firmly hold in place for 2 minutes.


MSDS | Specification Sheet | Brochure | Brochure (printer friendly)


Insulation type: Radiant barrier, needs 1" of airspace to function properly

Q. Will the adhesive backed Thermaflect Cloth cloth stick to my rough unfinished fiberglass?

A. No, the peel and stick version of Thermaflect Cloth does not stick well to rough surfaces. You could use the non-adhesive version and use a spray adhesive like 3M Super Trim Adhesive or Super 77. The spray adhesives can fill in the surface inconsistencies better than peel-and-stick adhesives.

Use light weight Thermaflect Cloth on:

  • Hood liners
  • Firewalls
  • Air intakes
  • Intercooler pipes

Part No Description
710040 36 in x 56 in
711002 24 in x 24 in with Adhesive
711005 36 in x 56 in with Adhesive