Insulation materials such as softwood fiberboards, clay roof tiles,
thatch roofing, cellulose, rock wool boards, or polystyrene do
not offer any noteworthy protection against RF radiation.
Sheet metal, copper, and aluminum offer a very high level of protection.
Especially well suited for flow-through roof assemblies are the special
gypsum boards "Climafit" (Rigips) or the glass fabric G-ES (Biologa),
as well as various other mesh and fiber mat products (Biologa).
On the one hand, aluminum foil is not permeable to air but shields
against RF radiation. On the other hand, it is usually coated on
both sides with PE so that it is not possible to establish a
connection to the ground potential in order to avoid the exposure
to undesirable ELF electrical fields.
We offer you a list of competent solution
providers whose products can reduce the electromagnetic pollution in your home or apartment.
The products of these companies have been approved by accredited institutes.
You can obtain more information about these products directly from the manufacturer.