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How do I shield a Smart meter"A Smart meter is a radiofrequency (RF) emitting device that the utility company has installed on your gas or electric meter. The RF signal emitted transmits information back to the utility company about your gas or electric usage. The signal is intermittent, but operates 24/7. Usually, the utility company will not permit you to completely block this transmission. However, you can shield your body and your living space to minimize the amount of RF exposure you receive. If you are also concerned about the magnetic field emissions (due to the presence of electric current), see magnetic shielding material and the magnetic shielding FAQ.
There are two main categories of shielding materials that can be used:RF reflectors and RF absorbers 
An RF reflector such as Nickel Copper Ripstop Fabric will cause the majority of the signal to bounce off, somewhat like a mirror reflects light. It can have very high shielding performance, and in general should be grounded for peak efficiency. It will usually offer better shielding (less RF transmission) than an absorbing material. An RF absorber such as Laminated Microwave Absorber will absorb some of the signal, and minimize reflection. The energy absorbed is released as a tiny, almost unmeasurable amount of heat. Grounding is usually not needed. In both cases, SOME amount of RF does get through the shield, as no shield is 100% effective. You can use double or triple layers of shielding to improve performance.
So where should I put the shield" And how much area do I need to cover"First, the shield must be positioned BETWEEN you and the source of the radiation. Generally, this means that the shield will be placed on the interior surface of the wall adjacent to the Smart meter. Think about the Smart meter emissions as coming from a light bulb located at the meter, and the shield casting a shadow. Cover enough wall so that the people would be in the protective "shadow" cast by the shield. Notice the small shield in the floor plan at right. In this example, the majority of the bedroom area is protected, but that is not true for the rest of the living space.
Smart Meters emit microwave signals in all directions. To protect your loved ones from these emissions, your shield must be placed between the source of emissions and the people. That usually means on the interior of the wall where the smart meter is attached. But what if you need to shield an outdoor patio" Or an area to the side of the smart meter"
Now you can. The Economy Exterior Smart Meter Shield Kit includes everything you need and requires no tools (except scissors) to install. Installation takes only seconds. Corrosion-immune, soft Stainless Steel Mesh is wrapped around the glass part of the smart meter and is held in place by weather resistant, adhesive Velcro®-type hook and loop. Simply trim any excess with your scissors. Couldn't be easier! Shielding performance reduces sideways signal measurably, but still allows enough to get back to the utility for proper meter readings.
Easy to apply water-based carbon conductive paint for walls, ceilings, doors and other interior OR exterior surfaces. Very effective for blocking cell phone signals, CB, TV, AM, FM signals, radiofrequency radiation and microwaves. Tested highly effective up to 18 GHz! Based on a high quality pure acrylic binder, this shielding paint offers a perfect compromise of excellent attenuation, high water resistance and good ecology. Good adhesion on many surfaces and substrates like latex paint, construction boards, cement, plaster, polystyrene, masonry surfaces, etc. The Y-Shield one liter can covers 50 sq ft, which is enough to cover almost the same area as our Smart Meter Shield Kit. Don't forget to use the Ground Kit if you are painting the interior of your home!
Y-Shield Liquid 1-Liter (Cat. #A290-1L) ........... $69.95
Specially designed for grounding indoor flat surfaces like walls painted with Y-Shield or CuPro-Cote. Provides secure connection. Connect to surface after conductive shielding paint has dried, but before overcoating. Ground cable included is 40 inches. Includes 25 feet of 1 inch wide conductive tape. Use at least 1 ground per 1000 sq ft of painted surface. For interior use only. Ground Kit for shielding Paint (Cat. #A290-GRD) ........... $44.95
This is a sprayable, brushable, or rollable conductive metallic coating using a specially formulated copper as the conductive agent for superior performance in electric field and RF shielding. Developed initially as an RFI/EMI shield for plastic electronic equipment housings, it can be applied directly onto acrylic, ABS and structural foams, as well as solvent sensitive materials such as polycarbonate and polystyrene. Create your own Faraday Cage with this reflective wifi blocking paint. Can also be applied to other non-porous surfaces including primed wallboard, wood and clean metals. Sometimes called the guitar shielding paint its great to provide a conductive surface to help eliminate EMI interference. Can be applied by sprayer, brush or roller just like ordinary latex paint! Just as safe to handle, too. Thin with water. Good surface resistivity of less than 5 Ohm/sq at 1 mil dry film thickness. Attenuation: more than 75 dB from 30 MHz to 1.5 GHz. Dried coating is stable up to 250° F. Covers 670 ft² per gallon per mil thickness if application is 100% efficient (typically 400 ft² per gallon when applied by roller). Color = Glitter Copper, but you can paint over with ordinary latex paint to achieve desired aesthetics. Warning: CuPro-Cote liquid does not tolerate freeze/thaw well. We cannot be responsible for freeze damage during shipping. RoHS Compliant. VOC: 1.0 ± 0.1 lbs/gallon (120.0 ± 12 grams/liter) The CuPro-Cote Quart can covers 100 sq ft, which is enough to cover almost double the area as our Smart Meter Shield Kit. This allows you to shield a larger area, or double the layers for even stronger shielding. Don't forget to use the Ground Kit if you are painting the interior of your home!
CuPro-Cote Paint Quart (Cat. #A292-Q) ........... $312.50
Only meters with a fast sampling rate can pick up the high-speed burst signals of a smart meter. Take a look at these options:
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So which one is right for your situation"
In a hypothetical world where your Smart meter is the only source of RF radiation, either absorbers or reflectors would work well. However, in the real world, there will be multiple sources of RF radiation. Some of them might be right inside your own home. Some might be coming from other directions. In such a situation, if you use a reflecting material, it will reflect on BOTH sides, and you could end up increasing the amount of RF in your living space. On the other hand, if you use an absorber, it will absorb on BOTH sides, so you cannot increase your exposure. If, you use both materials, a reflector on the side closest to the RF source, and an absorber on the side closest to the living space, you get the best of both materials... and the absolute lowest RF transmission.
Any small amount of Smart meter signal penetrating the reflector will be absorbed by the absorber. Any signal coming from the opposite direction will have to pass through the absorber, then reflect off the reflector, and finally pass through the absorber again before it re-enters the living space. This would be a very small amount indeed.
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