Self levelling with two different latex products!

[area tiling]

I have to level a kitchen floor tomorrow which is about 20m2, one half of the floor has bitumen on it , which I will be using ardex arditex on, the other is just the normal level flex self levelling compound ! Thinking that the 2 products could react to each other I was planning to put an expansion gap between them , would I need a expansion joint or would Silicon be acceptable ! Any thoughts appreciated !

 

[White Room]

If there both cement based and your not mixing them together in the same tub just side by side when pouring onto the floor can't see it being a problem...

 

[Qwerty]

If there both cement based and your not mixing them together in the same tub just side by side when pouring onto the floor can't see it being a problem...

Likewise, can't see an issue myself

 

[Peter]

Will be alright, just give the first one 15 minutes to tighten up if you're not sure. Never had an issue myself when using different levellers side by side.

 

[Mark@Tilemaster]

It won't be a problem. As mentioned above allow the first product to stiffen slightly before applying the other product. That way they will not mix, they will simply flow up to each other. You will probably end up with a very slight lip where the 2 meet but it will be minimal and you could always rub it down if its causing you a problem.
I'd recommend applying Levelflex first followed by the Arditex because the Arditex is a lot softer and will not pull on the Levelflex when curing.
All the best, Mark