Mu-copper Faraday cages

Mu-copper foil is used to create a Faraday cage in an existing room or building.

Mu-copper wall covering system

Mu-Copper foil has high attenuation properties in the electrical field (up to 120 dB) as well as in the magnetic field (see shielding performance table).

It is easy to apply, like wallpaper, thanks to its special adhesive for walls, ceilings and floors. The interior finish can be plaster board, foam tiles or plywood.

The 0.12 mm thick Mu-Copper is used to transform a regular room into a shielded room; the product has excellent shielding performance even at low frequencies. The system is easy to mount on shielded doors with clamping devices. The standard width of Mu-Copper is 1000 mm; the foil can be delivered on rolls or as ready-made sheets.

Mu-copper Faraday cage, Mu-copper wall covering system
Mu-copper Faraday cage, Mu-copper wall covering system

Overlap options

For the joints you can use a 50 mm overlap. For extra high performance you can fully solder the joints or use a seaming /copper tape with a conductive self-adhesive to apply over the joints.

Mu-copper wallpaper overlap options
Mu-copper wallpaper overlap options


  • Cost-effective / takes up little space
  • Light weight / high floor load
  • Can be constructed with local labour
  • Standard interior finish possible like plasterboard
  • Can be delivered with 10 year guarantee
  • Maintenance free
  • Delivery with turnkey measurement report

Shielding performance

Mu-copper faraday cage shielding performance
Mu-copper Faraday cage shielding performance

Basic values for the material and Mu-copper cage

These values are measured under laboratory conditions.
In other situations, results may differ; please read our Guarantee.

Field Frequency Mu-copper
H 1 kHz 22 dB
H 10 kHz 33 dB
H 200 kHz 68 dB
E 10 kHz 99 dB
E 200 kHz 127 dB
E 1 MHz 125 dB
E 18 MHz 101 dB
P 400 MHz 120 dB
P 1 GHz 110 dB
P 10 GHz 120 dB
Shielding performance of mu-copper foil 0.12 mm thick
These values are measured under laboratory conditions.
In other situations, results may differ; please read our Guarantee.

Measurements according to MIL STD 285 and the following situation:

  • Mu-copper foil 0.12 mm thick, fully soldered
  • Dimensions 10 x 6 x 4 m
  • 1 Door 0.9 x 2.1 m
  • 2 Ventilation panels
  • 4 Power filters

You can create a Faraday cage with high shielding performance yourself in an economic way, using local labour. This is possible in existing buildings as well as in new ones, without loss of space. Depending on the quality of the doors, vent panels, filters and/or windows used, attenuation levels up to 80-100 dB in the E-field can be realized. When more layers are applied, it is possible to achieve over 120 dB.


For ventilation we have developed honeycomb ventilation panels. Especially for the Mu-copper Faraday cages we can deliver honeycomb vent panels with a Mu-copper flap around the edges. It is easy to solder these into the Mu-copper Faraday cage.

Honeycomb ventilation panels with copper flap
Honeycomb ventilation panels with Mu-copper flap

For other honeycomb ventilation panels, see our Honeycomb ventilation webpage.


The system can be used with a detachable or fixed ceiling to separate existing ducts and cables from the shielded room.

Mu copper detachable ceiling
Mu-copper detachable ceiling
Mu copper detachable ceiling construction
Mu-copper detachable ceiling construction


EMI shielded server room
EMI shielded server room
Download leaflet Data Center Security for more information
EMI shielded MRI rooms
EMI shielded MRI room
  • Server rooms
  • EMC test rooms
  • Computer rooms
  • Medical examination rooms
  • Rooms for physiotherapy
  • Radar protection/Airport
  • TEMPEST Sites
  • Military EMC protection
  • Board room shielding
  • Industrial espionage/ Secure room
  • Buildings for intelligence agencies
Datasheet link image
For more information, please download the datasheet "Medical solutions"

Modified RF shielded door

Shielding faraday cage sliding door
Shielding Faraday cage sliding door

When a lower performance of e.g. 40-60 dB is acceptable, we can retrofit your existing door. The door is then equipped with gaskets at the top and sides, and with a conductive copper brush and doorstep at the bottom.

Both swinging and sliding doors are suitable for being shielded this way.

For heavy duty applications we can supply Faraday cage doors that offer up to 140 dB reduction.

For more information see our Faraday cage doors webpage


In addition to EM shielded doors and windows, the screened rooms can be equipped with the following components:

We also offer shielding solutions for water pipes, medical gases, and ventilation when needed.

Mu-copper Faraday cage example projects

Overlap fully soldered Detachable ceiling Shielded Room Faraday Cage
Project: University Amsterdam test labaratory
Double Leaf Door Stainless Steel Filterbox Honeycomb Ventilation Shielded Door
Project: Animal hospital Belgium, Horse MRI room
Sliding Door Floor Hole 4x1,5m Observation Room Shielded Ventilation


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General documentation

To get a quotation for Mu-copper cages within 24 hours fill in the form below.

Indicate how many square meters Mu-copper foil you need
Select an option:
WA : With adhesive
NA : No adhesive
Select an option:
WS : With solder
NS : No solder
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