"Percival P. Cassidy" wrote in message
...
Our front door has an aluminum alloy threshold, and we have just noticed
that ice is forming on the indoor side of it; this, when it melts, will
not be good for our wooden floor.

What must be happening, I am sure, is that, because the outdoor
temperature is now well below freezing, water-vapor from the indoor air is
condensing an freezing on the surface.

Short of (a) replacing the threshold by a wooden one or (b) cutting the
aluminum one lengthwise and interposing a "thermal barrier" between the
two sections, what's a good way of solving this problem?

Perce

You get what your paid for. Get a good wood threshold and solve your problem
post haste if you have wood floors!

Report back how you solved it.

Rich

Merry Christmas and Happy New Year!