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Demochick 03-01-2008 09:14 PM

Morter Bed
We are currently building a basement shower stall. We layed our subfloor in the shower.. we are about to lay the membrane. some quick questions...

Do we need to glue the membrane to the underlayment cement that is layed?

And what is the best product to use as the morter bed that goes over the membrane? we shop at lowes,

How long after we lay the morter bed until we can lay the thinset and tile?

Thanks for your help...

Bill_Vincent 03-02-2008 12:35 PM

First things first-- explain what you mean by "we layed our subfloor in the shower..."? Also, what are you using for a membrane?

Demochick 03-02-2008 07:22 PM

Well we used the underlayment cement and we sloped it...we are using the pvc rubber membrane..that lowes has.. we just didnt know if we used regular mortar..lowes says yes....but i thought we used portland cement and im just confused..

Bill_Vincent 03-02-2008 08:12 PM

I'm impressed!! I don't know who told you about doing a preslope, but it's not often that I run across a DIYer who knows to do that, which is why I had to ask!! kudos to you!!

Also, you're right-- you don't want a regular mortar mix, that what you want now is a sand and cement mix. your best bet is to use a bagged sand mix, which can also be found at Lowes. Only wet it down to the point where it looks and feels like damp sand, and then scread it off from there. Also, to answer your original question, no, you don't need to adhere it. Set it in, and nail it at the top of the memrbane, which should be about 10" or so off the floor.

Here-- I'm going to give you a link that explains in detail just how to do what you're doing right now:

Demochick 03-03-2008 05:52 AM

Well, thank you..

So I should use the portland cement and sand mix...what consistancy to I mix it too.

I get confused because I tend to google EVERYTHING.. lol, and when i googled this subject i seem to get things that dont match 100% with each other so I havent come across a sure way to do it.. it ok to use 100% silicone caulk around my patches for extra security..i just want to feel confident that its not going to leak..the glue I just used..made me feel really crappy and it didnt stick like i feel it should have.. :mad:

thanks again...I have some time for responses now becasue my husband just left for tennessee so he wont let me do much while he is like to have this figured out by friday when he returns...and feel confident about what im doing thanks again...


Bill_Vincent 03-03-2008 07:02 AM

Ummmmm.... patches? :eek: Where are these patches?

As for consistancy, like I said above-- about the consistancy of damp sand. Seriously-- check out that url I gave you. It's going to answer most of your questions.

Demochick 03-03-2008 07:57 PM

corner patches.
.and i did read your url link its a great help...ill post pics tommorrow and you can let me know what ya think..:thumbup:

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