"Bob Villa" wrote in message
...
On Aug 17, 11:39 am, Jules Richardson
wrote:
One of our bathroom toilet tanks 'sweats' badly at this time of year -
the outside of the tank is covered in condensation and it puddles on the
floor beneath. I was thinking of retro-fitting some insulation to the
inside of the tank (I don't want to mess with adding a warm-water feed,
and the tank's a nice old decorative one, so I'd rather not replace it
with a modern one that has a double wall or built-in insulation)

Questions:

1) how thick does the insulation need to be? Is 1/4" probably enough?
(that's perhaps something of a "how long is a piece of string" question;
I think I'm dealing with a max temperature differential between water and
air of 35 degrees)

2) What adhesive to use? Needs to be water-resistant, obviously, but also
something that's suitable for styrofoam and won't destroy it...

(alternately, I could just buy a kit, I suppose - they seem to be about
$30 online. Not sure if HD etc. carry them...)

cheers

Jules

The toilet I have (Mansfield) has styrofoam attached with silicone.
They only last a few years and start to sweat again!
Next, I'm going with the Sloan system (with the internal pressure
tank).

==========

I had the same problem with an insulated tank in my prior home.

I've always wondered if someone made some sort of holding tank that could be
installed in the basement. Big enough to hold water for 2-3 flushes. All it
would need to do is "park" some water long enough for it to come closer to
room temperature. Even if the basement's not as warm as the upstairs, it
would usually still be warmer than the coldest groundwater.