oh, so my curb is the problem. Yes i read through that tutorial a number of times. The only difference is that i used backer for the curb instead of the mud. And yes, the screws for the backer go through the liner, only through the curb though.

Is this going to cause me big problems? Can this easily be fixed?

Each of those screws put a hole in the liner that is going to let water in. Eventually, the water will cause the wood to swell, causing the grout and/or tile to crack and the wood to rot.

Since you're pretty far along at this point, I would probably solve this problem by buying a gallon of liquid waterproofing. Coat the entire curb and up the door jambs with two or three coats.

Another question since I can't tell from your pictures: When you installed the Hardibacker on the walls, how low are the screws/nails in relation to the height of the curb?

Will do, probably some Redgard or something right?



The lowest screws are about right at the top of the curb. Would it be good practice to just use the waterproofing on all of the screw holes?

Yes, but not just on the screws.

Cover the floor with some paper and coat the step and about 6" up the wall all the way around. Do a minimum of 2 coats, but three would be better, especially on the curb.

If you haven't already, tape and mud the seams on the curb first.

Ok, sounds good. Just on the curb only or the curb plus all the way around the shower 6"?



Done.

Go all the way around the shower if you have enough Redgard. You want to cover any screws that are close to the floor. Except for the floor, the bottom foot or so of the wall sees the most water.

There's a dilution ratio for Redgard on the first coat that is particularly important for use over hardibacker. You'll get a much better bond and not waste as much liquid if you dilute it.