The foil faced bats and plastic are redundant and may cause problems. If you use plastic tape the joints well and if you really are concerned tape over the staples as well. Hardie is a good product though some might prefer others. The only problem might be with it is uneven stud walls. It will flex some but works best if the wall is as flat as possible. If the walls are wavy you might need to fur them out or sister on straight studs.
David
--- In DoIt_Yourself@yahoogroups.com, "tazzersgirl" <cltcgirl-freecycle@...> wrote:
>
> I'm in an over 100 year old home in Connecticut. The bathroom was redone in the 60's but its really a mess now. I'm want to tear the walls to the studs and insulate the 2 exterior walls. I asked a guy at Home Depot for some advice and he seemed to know what he was doing but I wanted to check with you good people here.
> He said I should use foiled faced insulation with the foil facing inward toward the room and then put plastic sheeting on the walls over the studs before I put up the backer board. Does this sound right? I want to be sure I don't have any moisture or condensation behind the backer board. Also I was thinking of using Hardi backer. Is this a good choice or is there some other product that might work better. Hope these weren't stupid questions. lol. Thanks
> Christine
>
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