Help! Self Leveling Concrete Over Redgard+Hardiebacker? - Flooring - DIY Chatroom Home Improvement Forum

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View Poll Results: Best path to raise floor 3/4" over redgarded hardiebacker (under kitchen cabinets)
SLC over Redgard will work just fine 0 0%
Mortar over redgard is best 0 0%
Mortar 1st, then SLC is appropriate 0 0%
Different option 0 0%
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Old 08-09-2018, 08:13 PM   #1
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Help! Self Leveling Concrete over Redgard+Hardiebacker?

Can i use Self Leveling cement (plus primer) over hardiebacker that has been cocered in redgard/waterproofing membrane? Or do i have to use mortar (like for a shower)?

I am trying to raise part of my kitchen floor where the old cabinets were and the new cabinets are going. It is about 20 sq ft in an L shape, and i have to fill about 3/4" up to get level with the rest of the kitchen floor tiles. All of the area will be hidden when the new cabinets are installed.

I have already nstalled 1/2" hardiebacker on the floor and applied redgard waterproofing membrane with the fiberglass tape, and then put silicone on all the joints and soft spots/potential sieves.

Any/All help much appreciated!
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