luey123 Posted September 2, 2014 Report Share Posted September 2, 2014 I have a redwood hot tub flush built into an upper deck with a lower deck below. The tub pedestal support system below is surrounded by separate 2x6 framed walls on 16" centers that span from underside of upper deck to the concrete pad at ground level. It is all opened up presently for the rebuild which required removal of all the rotted material previously used... previous leaks to blame. What mat'l should I use for insulating these exterior walls in western Montana. We have moderately cold winters. I am going to side the exterior with as yet unknown mat'ls as I will need access to the tub for repairs etc and thought I would be fastening directly to the studs but am wondering if I shouldn't insulate over the studs instead of between them for a better result. Any suggestions would be much appreciated. Quote Link to comment Share on other sites More sharing options...
Roger Posted September 2, 2014 Report Share Posted September 2, 2014 There are many water proof/resistant types of insulation to use. Google it. You could even use plain batten insulation but use plastic under it and over the upper and lower edges of it. It's easy to cut (if need be) and tape back together. Staple it in and leave a foot or so on the top and bottom. Put in your battens and then fold the extra plastic over the top and bottom and staple. Or leave the bottom a 1/4 inch up or so depending on the dampness around the tub. Quote Link to comment Share on other sites More sharing options...
Spa_Guru Posted September 5, 2014 Report Share Posted September 5, 2014 If you use fiberglass insulation put moisture barriers inside and out, as wood tubs tend to seep. Quote Link to comment Share on other sites More sharing options...
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