EMF/RF Foil - 4 Foot Lengths by 4 Feet Wide


$7.99 USD

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If you require 4 foot wide RF Shielding Foil in lengths less than 125 feet (our Standard Roll is 125 feet), we sell it in increments of 4 foot lengths at approximately $2/foot.

Useful for EMF/RF Shielding of small living areas or EMF/RF emitting devices.
Combine it with a roll of our Aluminum Foil Tape to design your own custom EMF/RF shields for Cell Phones, Cordless Phones, Tablets, Laptops, Computers, Smart Meters, Microwave Ovens, etc..

Product Summary

Basic Shielding Protection 

Our Aluminum RF Shielding Foil is designed to block analogue and pulsed digital signals from exterior sources such as Microwave Transmitters, Cell Phone Towers, neighbours / neighbors Cordless Telephones, Wi-Fi signals, Smart Meters and more. The foil also offers an effective barrier against Low Frequency AC Electric Fields when grounded. 

RF Shielding Foil was designed for new construction and renovation. It has excellent RF shielding qualities and is a very versatile product that can be applied under drywall as a vapor barrier, under shingles on roof tops, in the attic, under stucco and plaster.   

  • Excellent High Frequency RF Shielding characteristics
  • Effective barrier against Low Frequency AC Electric Fields when grounded.
  • Electrically Conductive
  • Weather Resistant
  • Can be used as a Vapor Barrier - not breathable
  • Heavy Duty / Tear Proof
  • Flexible and light weight which allows for an easy installation
  • Safe to handle and non-toxic

Detect, Protect and Verify: Three Steps to Achieving Peace of Mind

Technical Data:




0.011“ / 11 mil

Roll Size

4 x increments of 4

Radiant Heat Reflected


Water Vapour Permeability   - ASTM E96-05

0.0058 Perms (Solid)

Corrosiveness                        - ASTM D3310-00


Fire Rating                              - ASTM E84-09    

Class 2 / Class B

Tear Resistance                     - ASTM D2261

Length 14.93 / Width 15.13

Emissivity                               - ASTM C1371-04A


Bleeding and Delamination  - ASTM C1313-05

No Bleeding or Delamination

Pliability                                  - ASTM C1313-05

No Cracking or Delamination

Resistance to Fungi               - ASTM C1338-08

Does not promote growth



RF Power Attenuation (approximate)


Blocking Power @  1 GHz

120 dB  or  99.9999999999 %

Blocking Power @  2 GHz

110 dB  or  99.999999999 %

Blocking Power @ 10 GHz

100 dB  or  99.99999999 %



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