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zwickau
Member
# Posted: 2 Oct 2016 06:44
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Hello,

We are moving into an old home in the US without ground in its electric outlets (it's common for these old homes 50-60 years old). And adding a ground to even one room may be expensive and inconveniencing. Would it be worth it to do interior shielding with Y-shield and/or the curtain or canopy fabric without grounding? This is a single-story home so at least it probably won't have the lower-floor (re-)radiation issues some other people reported on this thread.

Please advise.

Regards,
Gilbert

stefc
# Posted: 18 Oct 2016 11:46
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Dear all,

I have just bought HSF54 to paint the wall behind my bend and the one next to it (has a window) and I am wondering weather I should earth the paint? is that necessary? is it dangerous if I don't ? Someone told me that you can earth the paint only by painting the inside of the socket/plug on the wall. Is that correct? Thank you.

Henrik
Admin
# Posted: 18 Oct 2016 12:59
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stefc,

If you only need to shield from radiofrequency fields (ie. mobile signals, Wi-Fi etc.) then you shouldn't have to earth the paint. The earthing stops low-frequency fields from electrical wiring in the wall from coupling to the paint surface and propagating. If fields from ordinary electrical appliances don't bother you, then you shouldn't need to earth the paint.

DO NOT paint the inside of the wall socket! Instead, leave a ~2cm border around the socket. I put masking tape around wall sockets before painting.

If you do decide to earth the paint, there is more than one way to do so:

#1: ram a 1m long metal pipe into the ground outside and run a wire from it and connect it to the YSHIELD paint surface. Either get a earthing-kit from YSHIELD (best option) or DIY it by fastening a large metal washer onto the YSHIELD painted wall (somewhere non-visible) with a screw and make sure the bare end of the earthing wire is well fastened between the washer and wall under it.

In any case: its probably a good idea to prepare a contact point for earthing, before you paint over the YSHIELD, should you later realise that you need earthing.

#2: if your electrical sockets have earth and a licensed electrician has OK'ed it, you can make a earthing plug where you run a wire from the earth-pin of the plug and to the paint surface.

#3: if you live in an apartment - above ground level - and have no earth pin in the wall sockets, then you can connect a wire between paint surface to the bare metal of a radiator- or water pipe.

No matter how you connect the earth-wire: make sure to check with a simple electronics multimeter (set to Ohm, resistance) that the wire is electrically connected to the paint surface (ie. the multimeter shows very low resistance when one probe is touching bare wire and the other is touching bare YSHIELD paint surface.)

stefc
Member
# Posted: 18 Oct 2016 14:21
Reply 


Thank you very much for your answer.

Basically I live in an apartment on the third floor and my bedroom wall is probably facing an antenna installed on a nearby roof of a block of flats and probably that is where the radiation comes from. I just felt worries when reading what other people write on this forum when they earthed the paint. I will probably buy the kit from Yshield.

Again, thank you.

Henrik
Admin
# Posted: 18 Oct 2016 15:25
Reply 


stefc,

Just a few tips from own experience on using YSHIELD paint:

If the walls to be shielded are a porous, absorbent material (like old wallpaper, raw brick etc.) then its a good idea to prime the surface first so that the YSHIELD won't get sucked down into the surface, thus requiring more paint to cover properly.

Usual coating efficiency for YSHIELD is 7½ m2 per liter.

In case of earthing, the optimal way is to run adhesive metal tape (grounding strap) along the wall surface and attach the grounding kit onto the metal tape before painting YSHIELD on top. This will ensure best earthing performance. There's a picture of it here:
http://www.yshield.com/eu/yshield-grounding-strap-eb2-with-strong-glue-width-2-cm-10- meter
(see #2 image on that page)

Remember that the YSHIELD needs to dry completely to reach maximum shielding performance. Wait at least 48 hours before painting over the YSHIELD to prevent trapping un-evaporated water in the YSHIELD.

CYXOB
# Posted: 22 Feb 2017 01:03
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Hello Henrik and all :)
My name is Andrew (Canada)
I get a zero E-field reading (0 v/M) and an average of 1.5 to 2.0 uT, which I believe is high H-field reading. Can YSHIELD paint block uT / mG radiation?
Thank you

Henrik
Admin
# Posted: 22 Feb 2017 09:50
Reply 


CYXOB,

Yes, that is a high reading (2 µT = 20 mG). The BioInitiative 2012 report recommends to keep magnetic fields below an average of 1mG (0.1 µT).

YShield can only block electromagnetic field such as RF/microwave radiation. Not magnetic field alone. For that you'll need a special material with high magnetic permeability - meaning that it'll offer a magnetic field a "path of least resistance" and as so it'll flow along the material instead of continuing through the air.

Such a high magnetic permeability material is called muMetal. Its a combination alloy. Similar materials claim superior magnetic permeability to muMetal so try looking around. Here are some starting points:

http://www.yshield.com/ww/sheet-products-magnetic-field
https://www.lessemf.com/mag-shld.html

(mast-victims.org has no affiliation to the above companies; the links are only suggestions)

David
# Posted: 7 Mar 2017 01:08
Reply 


It appears that you successfully reduced the microwaves, to extremely low levels.

However, the grounding source is paramount. The electrical grounding system in most homes is charged with several hundred milli-Volts. This is not readily detected, as the earth below the home is also charged with several hundred millivolts.

If you grounded the Y-shield walls and window curtains to the home's electrical grounding system, you most likely increased the EF's, (or electric fields), in your home. EF's should not be confused with EMF's, (electro-magnetic fields).

Elevated EF's will produce serious harm to sensitive individuals. A "clean" ground is mandatory, but sometimes is not possible, (particularly in urban locations).

A large body of water is the ultimate with regard to a clean ground, (lake, river, bay, ocean, etc.). Or, a steel stake driven 4' into the earth and located at least 120' away from any and all electrical source(s), (power lines, homes, swimming pools, lighting, etc.), will also serve this purpose well.

T Alex
# Posted: 28 Apr 2017 08:02
Reply 


I get a bit confused by all of this, there was some mention about emf just bouncing around the room, so here's my questions:

I have a small room (10'x10') in my office that I'd like to reduce the emf's in as much as possible. This room has no widows.

1. if I paint the walls with the Y-shield then top coat with latex paint, not grounded just painted, will this help prevent emfs from coming in?

2. Is there an issue with not having any windows?

Thank you,
T Alex

Henrik
Admin
# Posted: 28 Apr 2017 10:04
Reply 


T Alex,

1). Yes it will block radiofrequency (RF) EMF. Grounding YShield paint prevents EMF from internal wall wiring (low frequency) coupling to the paint and re-radiating. It also prevents RF from re-radiating ("bouncing around" / reflections).

2). No windows just makes it easier to shield.

I would paint ceiling too.

In any case, check out the shielding FAQ by horsevad.

T Alex
# Posted: 28 Apr 2017 16:44
Reply 


Thank you Henrik!

norton
# Posted: 28 Jul 2017 16:16
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Guys, just a couple of thoughts, grounding, in essence, doesn't this bring us under the protection of the Earths EMF? if not, isn't that the aim? Are the ES people being effected by something in the room, or leaking into the room or even something in the products? allergy to copper(example) some people can't wear cheap jewelry because of metals in them? while inside a safe room we ourselves are not grounded, could problems be something to do with that? like not having an EMF rather than a safe EMF? not sure how it all works, so far though best solution to me, is to be as far away from the sources as poss, even though in this day and age, seems impossible

yiako
Member
# Posted: 12 Aug 2017 23:28
Reply 


If you only need to shield from radiofrequency fields (ie. mobile signals, Wi-Fi etc.) then you shouldn't have to earth the paint. The earthing stops low-frequency fields from electrical wiring in the wall from coupling to the paint surface and propagating.

Hi Henrik,
after painting with YSHIELD, isn't it possible to check with an emf meter if the low frequency fields have increased? Wouldn't that help decide if grounding is needed or not?

Henrik
Admin
# Posted: 15 Aug 2017 13:37
Reply 


yiako,

Yes it sure is and you should check with a meter to verify the shielding performance.

In my experience, as long as you leave a 2cm border around light switched and power sockets unpainted with YShield, low-frequency fields aren't an issue.

But best to verify with a ELF meter.

John C.
# Posted: 1 Sep 2017 05:24
Reply 


Good evening,

I have most likely gotten health issues from EMF exposure over the last few years and is looking for a solution to possibly revert this as much as I can. Going for a walk outside a few times a week has helped a lot , but it's not quite enough to eliminate the issues entirely. I still have problems with headaches and sleeping.

Currently I have a room where I both work and sleep that I'm thinking about shielding. My question to this is if it can be shielded with fabric/netting like "HNG80" by YSHIELD? But at the same time be able to work without harm having a few radiating devices such as a computer and monitor? No wireless connections are needed.

Would a setup like this just make things worse? Or would the shielding (if grounded) absorb/dissipate the radiation generated from within the room?

-John

yiako
Member
# Posted: 3 Sep 2017 22:46 - Edited by: yiako
Reply 


Good evening,
My neighbour's wifi is invading my bedroom. The signal is quite strong (-53dB) and although I talked to him, he said that he cannot move the router because there is no other phone socket in the apartment. I suggested buying him an eco router but he declined.He generally wasn't that helpful...

I was thinking of using Yshield in my bedroom but apparently there are strong Electric fields in the walls (not electromagnetic), most probably from the wiring. Shielding the Yshield paint using the apartments sockets doesn't seem to be a viable option as I am pretty sure that we have dirty electricity and I also read that grounding the Yshield paint using the sockets will actually increase the electric fields (again I must emphasize that I am talking about electric, and not electromagnetic fields.)

I am now thinking of using copper or aluminium wire mesh on the wall of my bedroom by using plastic tape to tape the mesh to the wall without actually grounding it.

Will that be enough to decrease the strength of the wifi signal and at the same time decrease (or at least not increase) the electric fields coming from the wiring in the wall?

By the way, I live in a 2nd floor rental apartment, so rewiring the apartment is not an option...

horsevad
Member
# Posted: 16 Sep 2017 23:14
Reply 


I am now thinking of using copper or aluminium wire mesh on the wall of my bedroom by using plastic tape to tape the mesh to the wall without actually grounding it.

Will that be enough to decrease the strength of the wifi signal and at the same time decrease (or at least not increase) the electric fields coming from the wiring in the wall?


Any shielding project not resulting in an complete enclosure risks worsening the exposure.
Only detailed local measurements can provide a full answer.

Grounding does not influence the shielding properties in the microwave frequencies, but if you connect an oscilloscope to the ungrounded shielding you will be able to see for yourself how much electrical noise there is removed from the shielding by grounding.

If the grounding is contaminated with dirty electricity special filters can be constructed - but the expense might not be justified in a rental setting.

//Kim Horsevad

yiako
Member
# Posted: 17 Sep 2017 11:21
Reply 


Hi Kim,
Many thanks for your answer.

I understand now that this is much more complicated than I expected and being in a rental home without being able to buy a flat for the next few years only makes things worse.

I searched for dirty electricity filters and I came up with the Stetzerizer filter but many sites say that they are practically useless (http://www.radiationsafety.ca/the-truth-about-dirty-electricity)

What kind of filters are you talking about and how much do they cost?

Also, I have a couple of questions about dirty electricity:

1) Since I live in a block of flats where everyone (including myself) has electronic devices such as routers isn't it safe to assume that I have dirty electricity or do I have to check with a meter?

2) Let's say that I have dirty electricity and I shield the apartment using mesh for the flooring and yshield paint for the walls and ceiling and then ground the shielding using the sockets. The voltage of dirty electricity that is going to be emitted through the walls and the floor should be the same with the grounding leakage, correct? If the grounding leakage is little (for example 0.8 volts), does that make it a health hazard?

Many thanks in advance

horsevad
Member
# Posted: 18 Sep 2017 18:34
Reply 


A) Stetzer filters do reduce the amount of foreign HF noise (dirty electricity), but the emit a quite intense electromagnetic field in the process.

B) Filters for ground connections is usually constructed specifically for the individual problem. I have no idea of cost.

C) Never assume, always measure. That said, the amount of electronic equipment connected to an electrical installation is directly proportional with the amount of dirty electricity.

D) Equipotential bonding, as the principle of grounding all electrical conductive parts of a building is called, is usually required in the electrical code. Grounding a shielding enclosure to a ground with foreign HF noise can make the shielding enclosure emit both electromagnetic, electrical and magnetic fields. If the shielding enclosure is a complete Faraday cage neither the electromagnetic or the electrical fields can penetrate the enclosure, but the Faraday cage is completely permeable for the magnetic fields. The intensity of such fields will be extremely low; but enough to cause discomfort for some EHS-patients.

//Kim Horsevad

North
# Posted: 8 May 2018 13:58
Reply 


I wonder if Aluminium Venetian Blinds would be good enough to block radiation through a window? Has anyone tried this and can say how well/bad it worked?

horsevad
Member
# Posted: 9 May 2018 16:11
Reply 



I wonder if Aluminium Venetian Blinds would be good enough to block radiation through a window? Has anyone tried this and can say how well/bad it worked?


To ensure good shielding the aluminium should be un-coated, so that each strip will have electrical connection to the next. Each strip in the venetian blind should furthermore have complete electrical connection to the rest of the shielding enclosure.

//Kim Horsevad

Anonymous
# Posted: 17 Aug 2018 11:50
Reply 


Vokla

My insurance company said they were regretting the claim after our house was flooded out via a broken pipe because ysheild effects the meters and nobody can get a true reading.
Also our place has been both grounded and painted properly and we have had a dozen sparkys here!
We cant live in our own home of 40 years because it burns you and makes us throw up
all my walls and ceilings have to come down because there is nothing u can paint over it to stop the EM biting into you and pets.
This is a FACT so yseheild can pay me all damages-
my house was worth around i million- now nobody wants URL buy it and WE cant live there!!
.

Henrik
Admin
# Posted: 20 Aug 2018 14:50
Reply 


Anonymous,

Your story is a 1st for me. I've used YShield paint to protect 3 different houses. Only benefits, no problems.

Sounds like there's something really, really wrong with your YShield job.
Did you have it done by a contractor or DIY?

Btw: in which part of the world are you?

Dawn
# Posted: 25 Aug 2018 16:54
Reply 


I want to shield part of my bedroom from all types of EMF's. Electric, magnetic, low and high frequencies. How do I do this? my understanding is that Y-shield only blocks one form.

Thank you,

Dawn

MelanieLes
# Posted: 26 Aug 2018 01:22
Reply 


I have just had a satellite dish installed for internet. Unfortunately this is our only option to receive the internet as we are remote (Australia).
I know I'm probably in the wrong section of this forum but would welcome any advice on where to seek more information.
Whilst looking at the install notes of the satellite (we had a professional install it) it mentioned the DO NOT STAND in front of dish. Making me wonder how safe it all was...
I'm considering moving the dish away from the house but wonder what are safe distances, etc and if there are safe/r dishes? Can we shield the ceilings? I've yet to plough through all the info on this forum regarding that!
Thank you in advance!

MelanieLes
# Posted: 26 Aug 2018 01:23
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mmm, as you can see by me adding my email address as user name that I don't often use forums!!!

Henrik
Admin
# Posted: 26 Aug 2018 10:30
Reply 


MelanieLes,

To protect your privacy, we've changed your username.
Next time, just type "MelanieLes" in the username field and leave the password field empty.

Henrik
Admin
# Posted: 26 Aug 2018 11:01
Reply 


MelanieLes,

Your sat.dish is two-way (both receiving and transmitting). Its the microwave radiation given off by the dish during transmisson that's the reason for the warning.

The dish has to be pointed precisely at a satellite orbit and thus its transmission "beam" will also be very directional, away from the dish (assuming its an actual parabolic dish).

Incoming signal from the satellite is usually weak and is prone to all sorts of disturbances like shifting weather patterns, rain etc.

But to give you a better answer, it'll help with a few extra details:

1). What make/model is your sat.dish? Perhaps name of service provider.

2). What is the distance from dish to house?

3). Is the dish pointing clean away from, or angled towards your house?

4). Indoors, how do you connect from your computer(s) to the router box? Cable or wireless?

I'll ask our trusted advisor, Horsevad, who knows a lot about satellites to come in and offer insights.

horsevad
Member
# Posted: 26 Aug 2018 23:39
Reply 


I'm considering moving the dish away from the house but wonder what are safe distances, etc and if there are safe/r dishes? Can we shield the ceilings? I've yet to plough through all the info on this forum regarding that!
Thank you in advance!



The antenna gain for a parabolic reflector can easily reach 40 dB, meaning that even though the output from the power amplificer may only be a couple of watts the EIRP (Effective Isotropic Radiated Power) may reach 20KW and the power flux density half a metre from the dish front may reach several thousand w/m²

(If you have detailed information about your dish I can do precise calculations)

Luckily this also means that the beam pattern from the dish is quite narrow. If the dish has sufficiently big diameter you should see only slight elevated levels 5 meters behind the dish.

But do NOT stand in front of the dish - even for short periods of time. And do NOT point it at anything you want to survive.

Relocating the dish further away from the house should be uncomplicated. If you are going to relocate the dish, then aim for a distance of at least 30 meters (and, if possible, even more) to minimise exposure even further.

//Kim Horsevad

MelanieLes
# Posted: 31 Aug 2018 07:26
Reply 


Thanks Henrik & Horsevad,
answers to questions:

1. The satellite was provided by nbn

2. The dish is directly on top of the house. It's a flat roof so it works out to be approx 200mm from bedroom ceiling. The rooms are only 2.4m high so we would be sleeping within the 5m range underneath the dish!

3. The dish is angled away from the roof .

4. The computer isn't connected at the moment as we're mid build but I'm guessing it will be wireless... I'm not very savvy where it comes to these type of things.

If you need more info about the dish I can call nbn for details. I have a user guide and can send you images (to an email address?).

I've also been looking into shielding with the black paint and it looks like it will cost me thousands. Willing to pay if our health is at risk. I just need to know which is the best way to go about reducing the radiation.

1. Leave the dish where it is and use paint shield and window film.
What are your opinions on the shielding products out there?

2. relocate the dish to further up the hill. Can move more than 30m away.
The company I've been dealing with say that by moving the dish I could be putting the house further at risk by having it in a more general field of exposure and having it on top of the house would be safer. Can't be sure if it's his product he just wants to sell...

I will also be buying a gigahurtz isotropic aerial, directional meter as was recommended by the shielding solutions company.

I noticed today, now I'm aware of the evils, that a house had a satellite dish on it's roof pointing directly onto the road so walkers and cars pass through the beam. Where do the general public stand here?

Many thanks for your feedback
PS: thanks for changing my username!! :)

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