No only one is need. Just want to be sure that is done correctly

Thanks. We are going to insist on the test tomorrow. He did put a rubber liner down after the preslope, should he have added another one at this step as well? I’m a new homeowner so I’m not really sure what to be looking for.

The rubber liner is under the mortar bed unless it’s not the you best red gaurd the shit out of that tub like 3-4 coats

Yikes they didn’t tape the seams and thin set the screw covers and did like 6” or water proofing lol why not spend the money on all the way up costs like 20$ and 15 min of time

to add on to this you should have a rubber liner.. if the tile guy says no i'd just tell him to leave and not come back

100% no. There's a reason if you pull a bathroom permit the leak test is inspected. 

Little story about a bathroom reno that I just did. Guys came and demoed the old pan. They did a quick leak check on the drain by pouring like 2liter bottle of water down and didn't notice any leaks in the basement below. 

So they poured a new pan and did a leak test. When they pulled the plug a small waterfall appeared in the basement. 

During the demo the old pvc glue came apart at the drain connection and the slow pour of the bottle didn't catch it but when you had a whole pan of water being backed up in the ptrap to the shower it left in that crack.

If they didn't do the leak test this would have never been found.

This right here just lazy or cheap not to do everything at once.

Do the flood test. While it’s drying he can properly finish the horizontal joints and apply waterproofing to the entire shower. That board is moisture resistant not waterproof.

You shouldn’t trust an IT guy who tells you that you don’t need to test your backups / DR plan and you shouldn’t trust a contractor who doesn’t want to flood test their work. 

Good lord. I don’t know enough about home improvement to be able to tell if they’re amazingly arrogant or knowingly scamming.

Thank you. It sounded like he was just making up an excuse to get out of doing it to me, but had to ask to be sure.

Uh, no. That should be waterproofed up to the ceiling, right? I did one shower with Redgard to the ceiling and two more with Ditra.

No leak test means no fixing a pinhole leak.

I'm just a homeowner that has built three showers, but I leak tested every one and then mudded the wall for tile a couple of hours later. My oldest shower is 14 and still used daily with zero problems.

looks like only one coat of liquid waterproofing, u see at the corner where brush and roller overlaps, it's what it should looks like. u still can see through the liquid membrane on the wall and shower base, there's no way it has two coats. and they want to cheap out on material, they should at least roll half of the wall

When in doubt, refer to the manufacturer. Use that as ammo if the contractor gives any pushback. What I'd ask is why any of the joints or aren't sealed with tape and mortar and then waterproofed but the corners are? Kind of strange to do one and not the other. 

As someone else said, cement board is water resistant, not waterproof. So if *any** moisture gets behind the tile, that cement board is going to just sit in water until it's too late and you have bigger problems. That roll on membrane should be applied per manufacturer instructions and achieve the correct thickness.

Simply read the instructions. [https://cdn.laticrete.com/\~/media/product-documents/installation-information/hydro\_barrier\_plus\_installation\_instructions\_ds1216.ashx?sc\_lang=en&vs=1&d=20210602T205042Z](https://cdn.laticrete.com/~/media/product-documents/installation-information/hydro_barrier_plus_installation_instructions_ds1216.ashx?sc_lang=en&vs=1&d=20210602T205042Z)

As others have said do not let them skip the flood test.

Also FWIW if there’s a properly installed liner on top of the preslope, then you don’t actually need or want a second layer of waterproofing on the surface.  Unnecessary and potential for a moisture sandwich.

jeff

Hydro barrier calls for 2 light coats… technically if you want to be critical 24hr dry time prior to flood testing. I honestly never just do the corners and curbs with fabric but I roll the entire shower stall completely!

Waterproofing is the single most important aspect of your entire shower enclosure. Yours is minimal at best. When the test is done, you can easily dry with a towel before starting tile. If applying tile with thinset it has water in the mix already, this little bit of moisture will not have any effect on anything. I can't speak for mastic, I have never used it.

If I was paying a contractor to do work at my house I would not let them skip any steps

Were they planning on waterproofing that horizontal seem? The whole wall really needs to be waterproofed because cement board isn’t waterproof.  The the corner need to have reinforcement tape, which looks like it wasn’t installed.

Hey there, my tile contractor claims we don’t need to flood test their work which has me feeling uneasy. They said that we will have to wait a week after the water has been drained to guarantee there’s no moisture present for the tile work to begin. 

So far, this is the waterproofing that’s been done:

1. Preslope with liner on top
2. Mortar with one coat (maybe 2? I can’t tell) of Hydro Barrier Plus.

I still want to move forward with the test, but does this waterproofing seem right for the pan? I feel like even with a liner we should still have two coats of hydro barrier by laticrete. To me, it looks like there’s only one.

Any help is greatly appreciated!

Pictures: https://imgur.com/a/1Grx5G2

Contractor wants to skip shower pan flood test. How does their waterproofing look?