01:32PM | 07/16/02
Member Since: 10/12/99
3 lifetime posts
I have a house built in 1952. The tub is an alcove style one (built against 3 walls. I am planning on re-doing the bathroom due to problems with tiling and have to take the tub out to replace all the walls.

The tub itself is cast iron and is built against an outside wall. I live in Minnesota and during the winter the tub is so cold that the water cools off in about 3 minutes. Since the tub is coming out anyways, I was thinking of trying to insulate underneth. Can I stuff ordinary wall insulation underneth it or is there some special thing for this purpose.



03:56AM | 07/17/02
Member Since: 03/13/00
1675 lifetime posts
If there's any chance of insulation under the tub getting wet, then fiberglass wall insulation would be quickly ruined.

If the problem is with the outside wall, then insulating UNDER the tub might help, but what about BESIDE the tub? Can you improve the insulation in that outside wall before putting the tub back in place?


11:42AM | 07/17/02
Member Since: 11/16/01
301 lifetime posts
Dear Michelle,
I had this problem in the mountains of Colorado. Since I had Hydronic heating in the house, I insulated with 3/4" foam and ran 3/4 copper tubing around the walls behind the tub from the boiler. I think you can do this with forced air heat and electric baseboard with a remote thermostat. It will take some advice from your local tradesmen, but you will love the results. I did and got a lot of hugs from my other half.


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