>I have been using a foil-reflecting sunshade in my Vanagon.  I have >just noticed that the
>backside of the visor has been burned in several places.  Kind of like >the magnifying glass
>effect.  Fortunately it did not catch fire.
>If you are using one, check to see if yours is causing damage.
>
I fail to see how this is possible. Does the shade not fit under the
visor? Mine does, so its impossible for the back of the visor to be
affected. Or, do you mean the front of the visor? I dont see how that
could be affected either except possibly by sun emanating from inside
the vehicle.