Best Way to Install Shower Base

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Old 05-23-12, 04:45 PM
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Best Way to Install Shower Base

Hello,

I am installing an acrylic shower base (Maax brand) over my wood subfloor, and am wondering what is the best method?

Quick background: I tore up the floor to the joists and installed new subfloor. The new floor is level and mostly flat. There are a couple of small spots where the floor dips about an 1/8". But for the most part, perfectly level and flat.

I have read that silicone can be applied to the webbing on the bottom of the shower base, and then the shower base just laid on the floor. But I have also read that it is best to make a mortar bed and set the base in that.

Wondering which method will give me the best results, and whether the floor having those couple of 1/8" dips should lean me one way or the other. I prefer to do this the best way possible, time is not an issue.

Thanks.

Ted
 
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Old 05-23-12, 05:49 PM
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I would use the thinset method. Lay down 15 lb felt, then put dollops of thinset where the base will sit, probably 4-6 of them. Squish it down. The felt will keep the wood from absorbing the water out of the thinset too prematurely.
 
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Old 05-23-12, 09:54 PM
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Thanks.

Just a couple of follow ups:

Is the felt attached to the subfloor? Nails?I guess I'm wondering exactly how the shower pan is attached to the floor.

Obviously I've never installed a shower pan.

Thanks again.
 
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Old 05-24-12, 05:00 PM
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Hi Larry

I have one additional follow up after visiting Mendards. When I initially posted, I was confused about the difference between self-leveling products and mortars.

So, at the store there was a huge variety of mortar/leveling products. If I understand your reply, a straightforward, slow setting tile mortar should do the trick?

Thanks.
 
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Old 05-24-12, 07:48 PM
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Thinset. You won't benefit with a SLC. The weight of the pan will hold itself, unless it has a lip where you can fasten it to the studs. No fastening of the felt. It is purely there to keep moisture from migrating to the wood.......holes
 
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Old 05-24-12, 08:49 PM
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Got it. Last question: the thinset I saw at the store called for a primer. Would the purpose of the primer be the same as the felt?

Can't imagine I would primer the felt. So I assume I would choose one or the other?

Thanks again.
 
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