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Old 08-13-2009, 08:41 PM   #16
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Should I pour a cement base for a new tub?


I'd be concerned about how heavy that much cement would be, especially when adding a tub full of water to that load!

Not sure if this is the right way of doing it but I noticed in my house the old tub is sitting on some kind of foam form.

Adding support mostly all around the tub sounds like a better way to support it though that way the weight is better distributed.

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Old 08-13-2009, 09:12 PM   #17
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Should I pour a cement base for a new tub?


The concrete weighs about the same as one leg of an adult male. And if weight is a big concern, "lightweight" concrete would help a lot there.
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Old 08-13-2009, 09:38 PM   #18
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Should I pour a cement base for a new tub?


He is on a concrete slab......

Wouldn't you fill the 6" with concrete block, then the concrete mounds? The bottom of the tub is elevated 6" for the P-trap. Willie T- have you ever used a bucket of tapping mud for a set on wood floors, tar paper first? Be safe, G
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Old 08-13-2009, 10:13 PM   #19
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Should I pour a cement base for a new tub?


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He is on a concrete slab......

Wouldn't you fill the 6" with concrete block, then the concrete mounds? The bottom of the tub is elevated 6" for the P-trap. Willie T- have you ever used a bucket of tapping mud for a set on wood floors, tar paper first? Be safe, G
Yeah, on a concrete slab, I'd probably use pavers or partition blocks laid on their sides to bring the base up high enough to only need a couple of inches of concrete (or mortar).

And No, I've never tried DW mud, but it sounds easy.. and only about $11. Sharp idea.
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Old 08-13-2009, 10:29 PM   #20
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Should I pour a cement base for a new tub?


No offence taken. At least not after you explained where you were coming from.lol. I guess I would feel the same if I saw someone start several questionable posts. But my situation is real. I am not a pro so I am learning every day from the web, from books and from asking questions. All of this made my wife tell me that she was very impressed with the work that I had done so far in the basement. She was so impressed that she confessed that she had already calculated into our monthly budget getting someone to complete the project I am in the process of doing because she did not think I could do it.
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Old 08-14-2009, 05:00 AM   #21
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Should I pour a cement base for a new tub?


i knew you were for real, i looked at your post #s.
trolls don't have 75 posts here, normally! lol

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Old 08-14-2009, 05:02 AM   #22
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Should I pour a cement base for a new tub?


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Hint: If you want to be able to remove the tub sometime after setting it into the cement, lay a sheet of Visqueen atop the wet cement columns before you ease the tub down on top of them.
good one willie! i'll have to try to remember that when i set my new tub next summer!

tnkx!

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Old 08-14-2009, 08:12 AM   #23
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Should I pour a cement base for a new tub?


I thought that I posted this question yesterday but I do not see it. Anyway, what are the dimensions of cinder blocks? Could I use them to put the wet stack on?
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Old 08-14-2009, 08:28 AM   #24
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Should I pour a cement base for a new tub?


cinder blocks are supposed to be 8"x8"x16", however, actual size seems to be a bit smaller...7-5/8"x15-1/2ish on the ones i just measured out front.

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Old 08-14-2009, 08:50 AM   #25
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Should I pour a cement base for a new tub?


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cinder blocks are supposed to be 8"x8"x16", however, actual size seems to be a bit smaller...7-5/8"x15-1/2ish on the ones i just measured out front.

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The blocks are smaller because when you add the mortar joints, they are the 8"x 16".
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Old 08-14-2009, 09:08 AM   #26
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Should I pour a cement base for a new tub?


This is a "cheater", but there are actually wiggly little strips of metal you can buy (haven't seen them for years) that are 3/8" wide. They are spacers you set into the mortar to automatically give you 3/8" (standard) joints. Pros never use them, so they may be difficult to find.
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Old 08-14-2009, 09:16 AM   #27
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Should I pour a cement base for a new tub?


4747: d-oh! that would make sense, yup....

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Old 08-14-2009, 09:54 AM   #28
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Should I pour a cement base for a new tub?


DM, That's one of those things that you take for granted and don't think about. If you were to ask my home phone number, I wouldn't know it, but I could dial it.
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Old 08-14-2009, 10:08 AM   #29
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Should I pour a cement base for a new tub?


yeah, but i shoulda thunka that too, silly me.

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Old 08-14-2009, 12:06 PM   #30
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Should I pour a cement base for a new tub?


I just came back from Lowes. They had standard blocks and then "gray" blocks. The gray blocks were much larger. I didnt measure but I think they are 6" tall. If thats the case it would be perfect for my project. I'll go back and measure later on.

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