EMP Cloth

From $15.00

EMP shielding cloth is an excellent way to protect larger items, such as cars, trucks, generators, motorcycles, or solar panels. It can also be used to wrap hard-to-cover items, such as red dot sights and lasers.

Cloth is sold in 59” wide strips and is sold by the linear foot. To cover large items, strips are sewn together. Select the appropriate length of cloth to make your cover (see table below for guidance). Cost is $15 per linear foot.



Determining How Much Cloth You Need

Cloth comes in a width of 59”. Use the table below to determine how many strips of cloth must be sewn together to form your cover:

Cover Width Number of Strips Needed
between 1′ and 4’11” 1
between 4’11” and 9’8″ 2
between 9’8″ and 14’5″ 3
between 14’5″ and 19’2″ 4
between 19’2″ and 23’11” 5

For example:

  • If you want a cover measuring 8’ wide x 12’ long, you would need 2 strips, so order 2 x 12’ = 24’ of cloth.
  • If you want a cover measuring 12’ wide x 20’ long, you would need 3 strips, so order 3 x 20’ = 60’ of cloth.
  • If you want a cover measuring 21’ wide x 30’ long, you would need 5 strips, so order 5 x 30’ = 150’ of cloth.


During checkout, specify size of cover, or for assistance with ordering, click CONTACT button at top of page. See illustration below for determining the length and width of a car cover.


EMP Cloth

EMP shielding cloth is an excellent way to protect larger items, such as cars, trucks, generators, motorcycles, or solar panels. It can also be used to wrap hard-to-cover items, such as red dot sights and lasers. With a PhD in electrical engineering, I was fortunate enough to have the equipment to test more than two dozen brands of shielding cloth. In the end, I identified one cloth that meets all these criteria:

  • Good shielding protection
  • Easily sewn
  • Durable
  • Safe to handle
  • Won’t tarnish or rust
  • Low surface conductivity
  • Reasonable cost

The cloth is made with nearly invisible stainless steel fibers and feels like a lightweight denim. It can be sewn by hand or with a sewing machine. The material is durable and safe to handle, and doesn’t contain high levels of silver or nickel. Also, it has low surface conductivity, meaning that it can be grounded very easily — usually by just allowing it to drape onto the ground or concrete floor.



Sizing Car/Truck/Motorcycle/Generator Covers
When measuring your car, truck, motorcycle, or generator, be sure to measure the widest part and to include 6″-12″ of cloth lying on the floor all the way around. This ensures that it will be well grounded and shielded. Note that since the width of the cloth is approximately 59″, you will need to sew several strips together to form large covers (see table above for determining total length). If you have questions, please contact me for assistance before ordering.

Note that for an additional charge, I can have the cloth cut and sewn prior to shipping. This way you receive a cover ready to put over your vehicle. See videos below for details about conductive car covers.





Sizing Solar Panel Covers – To determine the correct size for a solar panel, carefully measure the length, width, and thickness of the panel. You can either fully wrap the solar panel on all four sides like a Christmas package. Or you can lay the solar panel on a well-grounded floor (such as in the garage) and drape the cloth over like a protective tarp. Note: This is meant to protect solar panels that are disconnected from the charge controller and being kept in storage.
To order, use the “Cloth by the Linear Foot” button above.

Cost of Gun Optic Covers – a single 1′ x 59″ strip of cloth works wonderfully as a cover for red dots and laser sights (e.g., EOTECH, etc.) that are mounted on a rifle or handgun. Simply wrap the cloth around the receiver and tie to secure (see video below). Another option is to buy 3 feet and wrap the entire weapon lengthwise.



Caution on Purchasing
As you can tell, conductive cloth is expensive. The material for a generator cover might cost $300-$500, and a car cover around $1,100-$1,700. For that reason, if you’re uncertain about using this cloth, I strongly advise that you order a one-foot sample prior to placing a large order. All sales are final, as I have no way of returning unused cloth.


Caution-Shock Hazard! Conductive cloth will conduct electricity! Keep away from electrical outlets or other sources of electricity.

If you have questions, please click “Contact” at the top of the page.

A few questions that I am often asked:

1. What is conductive cloth? Conductive cloth is simply a cotton or polyester cloth in which some of the threads have been replaced with conductive metal threads. In the case of the cloth that I sell, the metal is stainless steel. I prefer stainless steel because it won’t rust or tarnish, and doesn’t typically cause allergic reactions.

2. What can it be used for? Conductive cloth is used to block RF energy, such as that resulting from a high-altitude nuclear EMP. Conductive cloth is especially useful in shielding large or hard-to-shield items, such as automobiles, motorcycles, generators, solar panels, and even gun optics. For small items that can be enclosed, I recommend using EMP Bags.

3. How well does this cloth shield? If properly used, this conductive cloth reduces RF fields by 90-97%. This would be adequate to allow cars, trucks, motorcycles, generators, or solar panels to survive an EMP. It is not meant as a direct replacement for a good Faraday cage, which can provide 99.7% or more of field reduction.

4. Do you make the cloth? No. I simply resell the product that I found to be optimal for this application. The price on my website is the same as that on the retailer’s.

5. Can I trust that this is the best cloth out there? I tested more than two dozen conductive cloth materials to find one that I thought was optimal. The cloth that I sell best meets the important metrics of shielding, sewability, durability, safe to handle, not tarnishing or rusting, easily grounded, and having a reasonable cost.

6. How big is the cloth? The cloth is approximately 59″ wide and sold by the linear foot. Example, if you buy three feet, you get a piece of cloth measuring 36″ x 59″. If you buy twenty feet, you get a cloth that measures 240″ x 59″.

7. How much will I need? It depends on what you’re trying to cover. To determine the right amount of material, you will need to make measurements of the length, width, and height of the object. A flexible tape measure is a great way to do this. If you need help sizing the cover, just write me, and I’ll be glad to assist.