Using Radio Frequency(RF) emitting devices
in side a protected area should be avoided!
If you use RF emitting devices in side the shielded house you risk that the RF will bounce back from the shielding.
RF shielding should be used to keep the RF from outside entering your house,
There for, when RF shielding is used,
we believe you should not use any wireless devices in side the shielded area.
DIY EMF/EMR shielding should be done only by those
who have the knowledge and on their own responsibility
In this page we will review several products and ways to block non ionizing Electromagnetic radiation in radio frequencies, also known as RF EMF/EMR(Electromagnetic Fields/Electromagnetic Radiation) In RF EMR, as the frequency is higher it is easier to block the EMF/EMR. Please remember that blocking and protection is the last step and before applying it you need to eliminate all RF sources in your house and conduct several RF EMF/EMR measurements in the house to identify the sources outside the house causing the high levels inside the house. If, for example, your neighbored is using a RF emitting device, I suggest trying to talking out of using the RF device (at least try to) before trying to block it be applying RF blocking paint on the wall between your and his apartments.
Video link - Blocking RF radiation, the basics
There are several manufacturers of RF blocking fabrics. I am not familiar with any ELF blocking fabrics. As explained before on this site, while it is easy and cheap to block RF EMF/EMR(Electromagnetic Fields/Electromagnetic Radiation) it is very complex and expensive to block ELF.
I tried several types of RF blocking fabrics and each one was different in the frequencies it can block and to the extent it can do so. If you want to buy these fabrics, first try to get the characteristic charts of the fabric so you can see which frequencies it can block and to what extent.
Picture – shieldon© fabrics
I use these fabrics mostly as a cheap and portable way to block RF from penetrating office walls so I will be protected at my work (as much as possible). It can be applied to the wall and then removed, fairly easily, if needed. It is possible to get these fabrics in different colors so it will be similar to the wall's original color. I also carry these fabrics with me when traveling and use them when staying in hotels. Some of the fabrics are see-through and can be used as curtains or as bed canopies.
Picture – office wall protected with RF blocking fabric
Some people think and believe that the human body itself is a source of EMF/EMR. In some cases it would not be a good idea to wear clothes that block the body's own EMF/EMR. In addition, as said before, each person is different. An RF blocking fabric can help one person and in the same time it will not help the other.
It is possible to get several types of clothes that are made from RF blocking fabric. These RF protection clothes are sold around the net and are usually expensive. I tried to wear these fabrics (custom made) on my body but felt no drastic effect. For now, I decided not to wear these RF protective clothes, except from the RF protection hat which I wear daily. I might try wearing them again in the future.
Picture - RF protection Jacket
Picture - RF Protection pants
Picture – a shirt made from an RF blocking fabric
Picture – a pair of pants made from an RF blocking fabric
A few years back I bought an RF protection hat on the web. It was expensive (~US$35) and my experience was that it had no drastic effect. A few other EHS persons reported that it helps them more than it helped me.
A year after, I created an RF protection hat from shieldon© RF blocking fabric and later on, I created a few more hats for me and several other EHS friends, most of them reported that it helps them. I was able to show that the hat is blocking RF EMR with RF meters I have in one of my videos.
My experience with the hats I made myself is that they are very helpful. I wear such a hat every time I go out, and most of the time at work. It allows me to function better when the RF sources are above me (WIFI routers, Cellphone masts and so on). It does not protect from RF sources that are below you.
We also have several RF blocking caps that can be attached and sew onto most baseball hats.
Picture - RF blocking bucket hat
Some building materials (like concrete) block up to 90% of the RF EMF/EMR(Electromagnetic Fields/Electromagnetic Radiation, for internal walls the RF blocking wall paper is more recommended- see below). For other material that don't block RF as good as concrete, or for cases that the RF levels are so high that some of it manage to pass the walls of your house and get into the rooms, it is possible and recommended to use carbon based RF blocking paint.
RF protection paint can be applied on internal or external walls (The paint is a reflecting paint so it is more recommended to use on external walls) . The paint itself is a conductor and if applied correctly (and when grounded) will create a barrier that will block most ( more than 90%, depending on the type and brand of the RF blocking color and the frequency of the RF EMR) of the RF coming into your home. The price of these paints is usually expensive but this is a solution that will last for years. The color is usually black but you can paint over it with any color you like.
The paint should be applied on all the external walls of the house (from inside or outside). It is also possible to use the paint on the ceiling. If you live in an apartment building, you should also find a way to block RF EMR coming from the floors below and above you and from apartments beside you. Sometimes it is sufficient to apply it only on the wall facing the external RF radiation source.
Picture – RF blocking Paint
None of the available paints were tested by me up to this moment, but I hope to do it soon. Other people reported that the carbon paint is very good and it does the job.
I don’t think it will be wise to apply this paint (or any other RF blocking technique) on your home's walls and then to use wireless or cellular equipment inside the house.
The RF blocking wallpaper is a elegant way to protect walls. It need no grounding, and the wall paper should be painted over with regulate paint. The smooth side should be glued to the wall and the other side painted.
This is the cheapest way to block RF radiation. It may not work in blocking all the frequencies but it is a cheap, first aid solution. Should be also very effective in blocking RF radiation from smart meters (on an inside of the meter wall). The disadvantage of the Aluminum Mosquito net is that is blocks all most 100% of the radiation from both side, meaning that if you have a RF radiation source inside your house the radiation will be radiated inside again by the reflective net. The net should be used with extreme care and RF tests should be done before and after. To be used when you can't afford proper, professional RF protection materials.
If you are surrounded by RF EMF/EMR even in your bedroom you might want to use this product. The RF blocking canopies are very expensive but they will allow you to sleep in an RF free environment even if your bedroom has some RF EMR.
Coupled with an RF blocking carpet, to block the RF coming from below floors and apartments, the canopies will block most of the RF and will leave a clean RF free environment inside it.
Please never use RF source inside the canopy, this may result in exposure to high levels of RF EMR.
The canopies are made from an RF blocking Net cloth that allows fresh air to penetrate the canopy.
Picture – RF blocking Paint
Picture - RF blocking Floor mat
Some of the regular anti-sun window films will also block some of the RF radiation coming from the outside of the house, but usually the RF blocking film will do a better job.
The installation can be done by you, but I recommend of getting some professional installation service in order to avoid air bobbles.
There is no need to ground the film.
Click here for more details about RF blocking window's film on www.4EHSByEHS.com
Picture – RF blocking Paint
Another way to stop the RF radiation from coming into your house via the windows is to install RF blocking curtains. there are several types of fabrics used for these curtains. each type of curtain has different characteristics. The biggest advantage of these curtains is that they can be taken off the walls, washed and re-installed in different location (in case of moving to a new apartment).
Picture - RF blocking curtain
I don’t like microwave ovens. They warm and cook food really quickly but it is not exactly cooking and it warms the food using microwave (2.4 GHz RF radiation) radiation. Microwave ovens use ~500W microwave tubes that transmit very strong 2.4GHz RF/WM radiation. Most of the RF/WM is blocked by the oven’s cover and door but still high levels of RF EMR (similar to the levels that are emitted from a GSM cellphone) are emitted from the door while the oven is working and even if and when it is 100% OK.
If you still want to use your microwave please never look inside the oven and be sure to leave the room when the microwave oven is working. When my wife uses that microwave oven (about once a month) she leaves the kitchen room and I leave the house. The only use we still do with the microwave oven is to sterilize the baby's dishes and to make instant popcorn.
The best way to block most of the RF radiation emitted from a microwave ovens door and sides is to put it in a built-in wooden cabinet and to cover the sides and door of the cabinet with RF blocking material (leave some space for air for cooling).
If you don't have a built-in wooden cabinet you can try and put RF blocking film or wall paper on the micro-ovens' door.
Picture – RF radiation emitted from microwave oven
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