Using self leveling concrete as top coat

[Anonymous No.2463378]

I'm fixing up an old room to use as a workshop. The subfloor was a slab that was about 1.5 inches lower on one side (laser level confirmed) so as per my tile guy buddy's instructions, I resolved to pack the bulk of the grade with sand mix and pour self leveling concrete over the whole thing up to the level line, then call it a day.
Question is, is this retarded? I know self leveling 'crete isn't designed to be used as a finished floor and is really meant to be floored over. Should I anticipate any problems like cracking and chipping? Would a sealer make it more resilient?
I want it to hold up to a 400+ pound workbench and be able to withstand repeated concussive force e.g. chiseling joints on said workbench.

[Anonymous No.2463405]

It should be fine

[Anonymous No.2464199]

>>2463378
It will be slippery when wet

[Anonymous No.2464238]

>>2463378
If you poured right over sand without mixing or consolidating it with the self level it will eventually flake off especially if you didn't put any primer on the sand. Self level underlayments are designed for abrasion resistance or for sealers to adhere to them, there's a reason every self level manufacturer makes different products for self level underlayments and self level overlays / toppings.

[Anonymous No.2465969]

>>2464238
Thanks or the tips, I did end up priming the sand mix + the sliver of exposed concrete and poured over that. The result was not so good however, with a lot of valleys and highs. Pic related, maybe I just agitated it too much.
I'm going to pray that this coat adheres (I used a shit-ton of primer at two coats) and pour another few bags over this without touching it too much like a spastic. What you say makes me consider getting some kind of work flooring over the result, maybe plastic interlocking tiles.

[Anonymous No.2465970]

>>2465969
Also the concrete "footer" in that pic goes along the perimeter of the slab, it might give an idea of the kind of grade I'm having to work with. Probably an outdoor slab converted to a room at some point. Anyway just though it was interesting.

[Anonymous No.2465972]

>>2465969
I've done a few jobs with self leveling concrete and the trick is always to just let it do its thing and touch it as little as possible.

[Fuck The Electric Jew No.2467107]

>>2463378

Isn’t there supposed to be a slope in concrete away from your home so water runs away from your foundation and towards a low point in heavy rain/flood etc?

[Anonymous No.2467327]

>>2465969
Bro used to be a gypcrete guy and we worked with self level and feather edge all the time. I can tell you exactly how to fix this, did you pour another coat yet?

[Anonymous No.2467331]

>>2467327
I mean *I* used to be a gypcrete guy, fuck. Literally have done thousands and thousands of floors

[Anonymous No.2467448]

>>2467107
It's an interior slab.

>>2465969
You can rent an electric concrete grinder for a day for around $150-$200. It would flatten out that surface with ease.