RFOIL® ULTRA NT Radiant BARRIER Foil

rFoil is manufactured in Etobicoke, ON, Canada

rFoil has a thickness of 7 mil

Ultra NT rFoil has been used for RF shielding inside walls for over 20 years, more than any other radiant barrier.

rFoil is purpose-built for RF shielding, not just a radiant heat barrier like most foil- backed drywall. Joint conditions and interfacing with other surfaces, frames, penetrations, etc cannot be done with drywall, thus requiring the use of the flexible and durable rFoil.

rFoil is comprised of aluminum and not copper.

No. Although it seems they are the same in principle, rFoil is two layers of aluminum with a no-tear woven layer in between.

No.  While perforated rFoil still provides very high RF shielding, the perforated version provides slightly less RF attenuation.

Solid rFoil: Minimum Shielding Effectiveness (100MHz – 10GHz): 85 dB
Perforated rFoil: Minimum Shielding Effectiveness (100MHz – 10Ghz): 67 dB

Modern smart phones are very powerful and will boost signal to connect to the tower.

This depends on installation method and adjacent conditions. Every building or room is very different and constructed by different individuals. Testing should be performed by a professional to determine final shielding effectiveness.

There is a high chance of achieving that performance with rFoil and paint on the wall surfaces.  However even this is contingent on penetrations, doors, etc. that may decrease shielding performance of the whole wall or room.

Multiple layers of rFoil directly on each other do not necessarily increase shielding performance in our experience. Multiple layers seem to do better when there is space or an airgap in between each layer. 

rFoil can be penetrated with drywall screws, however black phosphate fine threaded drywall screws are recommended. Drywall screws used to fasten the second layer of drywall must fasten to the same studs.

Some customers may allow this method, but it should be verified with the appropriate architect and security authorities.

You must verify the adhesive being used will adhere to both rFoil and the tile.

Generally, yes self-adhering carpet tiles will sufficiently adhere to rFoil.

The aluminum metals in rFoil could react with the components/ingredients of the concrete mix. Any concrete ingredients that could react negatively to aluminum should be avoided.

Consult with the architect on this application. However RAF pedestals can be adhered to rFoil.

Yes. Check with local fire code and architectural requirements.

If approved by the security authorities for the project, the perforated rFoil may be used in partitions where one does not want to create a vapor barrier.

• The type of tape required is dependent on the accrediting officer for that project.
• The standard metalized tape is conductive only on the top surface, whereas the 3M 1170 is highly conductive throughout the tape including the adhesive. 3M 1170 may be used for patching gaps, holes, or tears.

Consult with the architect on the specific method required for your project. A flat 6” overlap between layers may not be sufficient to meet project requirements.

Consult with the architect on the specific method required for your project. Overlaps may vary from as little as 18″, or full coverage across a slab or deck may be necessary.

• Consult with the architect on the customer’s requirements for this condition. Many times recessed outlets and other controls are not permitted to be recessed, and should be surface mounted only, including the servicing conduit.
• rFoil should not come in contact with the metal junction box.

An additional rFoil patch with at least 6” overlap and tape. Depending on the size of the patch required, the 3M 1170 tape may be sufficient.

There are various means and methods, and they vary depending on which organization this is for, and what the final performance expectations are of the shielding. Please contact us for further discussion.

No, Signals Defense is a distributor of RFOIL Radiant Barrier Foils and Tapes.  For a product quote, please contact us.

Currently, there is no ‘manufacturer-recommended’ basis-of-design or solution for grounding rFoil.  The accrediting official who is requesting the grounding should ultimately provide the means and methods on how they want it done and where. 

Only the accrediting officials should weigh-in on the need to ‘ground’ rFoil, as only they are privy to individual project requirements or needs (i.e. what actual performance is required, how is it being tested, what are the threats, what performance improvement is expected by grounding vs not grounding.