This dang tub has just gotten creakier & creakier.I'm pissed!Īs noted in my original post, the tub was installed exactly according to A/S directions.the floor & stringer are dead level. I have to wonder, though, if the foam will eventually pack out and stop supporting it? Assuming it is present, I'd prefer to use foam, as I could more easily get it to the back end of the tub. I haven't inspected the tub for the presence of this 'waffle' layer- will do so later today. They also said that if I do nothing, there is no risk of the tub cracking or failing- it'll just be a noisy tub. (I asked about placing plastic sheeting b/w tub & foam, and they said no-go.) If the tub doesn't have this layer, they said shims can be placed under the tub, but I'd rather not do this because a) access is limited/getting them in there would be tough, and b) I'm wary of having focal points of contact along the bottom of the tub where weight would be concentrated. Older tubs don't have this, and foam or mortar in contact with the surface will delaminate it. They said that if the stringer is properly installed, foam or mortar can be placed below the tub, but only if it the tub is relatively new- apparently, they have added a new layer to the bottom of the tub that has a 'waffle' appearance to it. Still, they persist that this is the only possible reason for creaking (even though the noise is coming from the bottom of the tub- not the perimeters). I was well aware of how critical it is, and made dang-sure it was dead-level and straight, and securely fastened to the wall. The second person was more helpful, but after describing the problem, they zeroed in immediately on the stringer as the problem. Just talked w/ Amer Standard- had to call twice, b/c the first person was truly clueless, and could not (would not?) transfer me to a supervisor. I'd rather not call Americast about this.not optimistic I'd get any useful info. Is there any real risk in delam due to mortar contact?Ĭreaking = movement.if I do nothing, am I risking eventual cracks/failure of the tub? Trying to protect the surface of the tub with visqueen could be tough/impossible. As mentioned, I've got little access via the waste/overflow slot in the floor- I might be able to shove some mortar in via that access, but could only push it in so far. recommendation), using visqueen b/w tub and mud- presumably to keep mud away from tub surfaces, where delaminating might occur. Some seem to bed this tub in mortar (regardless of mfr. Any suggestions on how to get this thing to quiet down?Įdit: In reviewing some past threads on this issue, sounds like spray foam is a no-go.possibility of delaminating the tub structure. Dang!Īny ideas why they don't want mud under the tub? I have some access (via crawlspace) under the tub- it's sitting on 3/4 ply b/w a couple of I-joists- there's access through a slot where the waste/overflow drains out. Tile is in and finished/caulked, and the tub has started creaking- along the bottom of the tub. Mfr does not recommend mud under the tub (will void warranty if it is used)- I was skeptical, but followed their recommendation. Installed an Americast tub a couple months ago- used 2x4 ledgers along back, as directed.
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