Hello out there and thanks for looking. I've been scouring the net looking for how to fold or cut corners for my membrane pan liner. I've already ruined 2 corners! My shower is an alcove style: 3 walls. The 2 back corners were easy as I had some space between studs to tuck the corners in but I'm at my wits end on how to do the corners by the curb. Im totally mystified. Ive seen what look like pre-made dam corners but don't know where to get them or how to make them. Please help, I'm stuck and frustrated...

Thanks.

My Home Depot carries this outside corners for $5.00 a piece. You can also make them yourself using left over material from the pan lining. I personally think it is bette to make them yourself. You have to be little creative and also use common sense. Overlap well, staple to studs, and glue each over-lapping flap well.

Well since I already ruined 2 corners I guess I don't have much in the common sense area :) Can anyone else perhaps send me some good diagrams on how this is done please? Or maybe a how to article on it?

Thanks.

See if this may help you there are a couple of ways to do it

YouTube - Folding Corners in a Shower Pan Liner (http://www.youtube.com/watch?v=iXQsPVYekBE&feature=related)

YouTube - Installing a Shower Pan Liner (http://www.youtube.com/watch?v=EZKL-CIoOEk)



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Here is a clip from YouTube. Your Curb Fold starts at around 1:28

YouTube - Folding Corners in a Shower Pan Liner (http://www.youtube.com/watch?v=iXQsPVYekBE&feature=related)

Guys, thanks for sending the links BUT unfortunately I'm still not getting a good idea of how to do this. The very end of the video clip falls short of explaining what I need to do. There's all this extra liner material I have, even with a cut and folding over onto the curb. I still have a pig-ear of material left over on the wall side of the alcove. I'm just looking to get a smooth, watertight corner. Not even sure how to make one of those patches. Sheesh it can't be this difficult right?

Again thanks for your patience.

There's all this extra liner material I have, even with a cut and folding over onto the curb. I still have a pig-ear of material left over on the wall side of the alcove. Those "pig ears" are the corners. They foldinand are nailed to the stud. Here is a detailed explaination:
Mortar Bed Shower Floor for Tile Showers (http://johnbridge.com/mortar_bed_shower_floor.htm) Good luck and thank you for rating my answer. Tom

Tom, I ended up making my own patch. The problem is that there's just too much material left over due to the pig ear and the curb and there's really no full corner. Ive seen all the videos and there's no way to do it without cutting material somewhere. I appreciate all the responses and help. Just got done gluing up the patches and waiting for them to setup before doing another water test.

Thanks everyone!

Your corners should be seamless. The only cut should be the flap that fits over the threshold. Is that bthe way it's installed? Regards Tom

Those "pig ears" are the corners. They foldinand are nailed to the stud. Here is a detailed explaination:
Mortar Bed Shower Floor for Tile Showers (http://johnbridge.com/mortar_bed_shower_floor.htm) Good luck and thank you for rating my answer. Tom

This is an excellent step-by-step link. Follow it and you should be fine...

Well, I made my patches and water-tested over night and all seems fine. I just got done with wonderboarding the walls.

I am considering wonderboarding the curb/threshold and then putting one piece of marble across the top and inside/underneath. Is there a method for doing this?

Thanks.

Congratulations.. Yes, it takes bit of skill and creativity to manufacture the curb corner...

We put thin set on wonderboard and than "glue" it against the sides and top of the curb. You can nail it - but keep nails as high as possible - definitely not lower than 2" above the floor. Then lay marble threshold piece over the top of the curb over bed of thin set.

Safety tip: Be careful here. Marble is very slippery when wet. Make it a habit to step over it, not on it, when getting out of the shower...

Milo, I can glue it right onto the pvc liner material? This doesn't make sense to me. Wouldn't it move somewhat and not be stable? Right now the liner is wrapped over the curb. Can you please explain further on how to glue it to the liner/curb?

A year after this question was submitted, I'm searching for the same, and all I find are incomplete answers, or references to the same small group of pages that somehow don't quite tell you. Those yuotubes stop a second before actually showing what to do with the corner. After further searches, here is a link that comes closer to the answer. I say closer, because the folds in the drawing at the side/curb joint are a physical impossibility (in the area above the pan floor, and below the top of the curb). So, here's yet another link. They also have a very different method for constructing a "dam corner"-they lay (glue) a complete piece over the top. I believe the Oatey corners could go on top of their rig, for a perfect joint. Try this: http://toolbelt.buildiq.com/tool-docs/SBS/SHPCustomShowerPanSBS.pdf

Installing PVC liner requires some basis skill and common sense. You can practice it in a paper box with extra piece of liner or large cloth. As far as the corners go you can actually buy them and glue them over the cut.

However, if you do not feel confident enough to do this job, you should hire somebody to install it for you. It takes 20 minutes. Should not be that expensive - and job will be done right.