Loft Aerial Problem.

[brbrown]

I have lost the use of my two loft TV aerials due to interference from the installation of foil backed dense foam insulation. I guess this is caused by signal reflection. Would any know of a solution to enable me to bring the aerials back into use. I know the obvious solution is to erect them outside, but that can be costly.

 

[James]

Unfortunately it may well be either mount the areal outside or remove the foil backed insulation

 

[Avo Mk8]

As per James. Your aerial is now in a Faraday cage screening the signal from it. If the aerial is near to the roof insulation, you could try cutting a section out about a metre square in the centre of line of sight of the aerial to the transmitter. If you could remove the foil from that section you could put the foil-less piece back!

Have you tried an amplified indoor aerial, perhaps placed in a window (upper floor?) as an alternative?

edit - you might find cutting a horizontal slot much less than 1m tall would still work. I'm not up on signal polarization these days!