In the USA, I haven't known of aluminum foil being used on the inside, 
and very little on the outside for some years.In the early 1950's there 
was some movement in that direction, but it died. Help the people that 
live  in some houses my dad bult then. They had aluminum foil on all the 
exterior walls and roof. And thouse people can't figure out why rabbit 
ears don't work.

Clint Sharp wrote:
> In message <001f01ca3923$208f9600$0300a8c0@main>, Olin Lathrop 
> <olin_piclist@embedinc.com> writes
>   
>> William Couture wrote:
>>     
>>> We're having some work done in our house, and need some CAT5 and
>>> possibly COAX run.
>>>
>>> Just talked to an installer, and (surprise!) they suggested something
>>> other than their services.
>>>
>>> Ethernet over powerline.
>>>       
> Nasty stuff if you are an amateur radio operator or short wave radio 
> listener or have one nearby. It generates noise in the HF band 
> apparently.
>   
>> That doesn't make sense.  Unless you live in a mansion, a wireless access
>> point in the basement will easily cover the whole house.
>>     
> Depends how old the house is, I've seen aluminium foil backed insulation 
> used for internal walls and floors here in the UK on refurbished homes 
> and new builds which makes WiFi somewhat 'difficult' to use. Maybe 
> similar in the US if a house is being remodelled?
>
>   
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