Energy saving: aluminum foil and radiators

[Polo]

This is what I need! But is there one better material than the other? What can I put as a cardboard? where do I have to put poly?
please

[Boris Kako]

It seems that you like experiences! Did you do the one with the tetra pak? I need to insulate (against the cold) 60mt2 with walls from 4 to 6mt !!!!!!!!!!!!!!!! then need system D !!!
I thought of making plates with tetra pak. What do you think about it?

[Targol]

Be careful not to limit yourself to the standard, people.
If the aluminum foil can be effective if there is no insulation or internal insulation, this is not necessarily the case in case of external insulation.

I know, in France at least, this type of insulation is very marginal but it has many advantages (which I tried to describe the blog ).

In this case, the wall serving as a thermal buffer, it may be interesting to heat it up a bit ...

[SB88]

Hello !

I bought electric heaters with gentle heat and inertia.

I would like to know if this insulating sheet is valid behind electric radias? And safe!

Like the previous question, what would be the best material?

Thank you!