Home Improvement Asked on September 3, 2021
I need to pour a level pad 2 1/4 inches thick to support a cast iron tub on top of our slab (the floors are raised 2 1/4 inches). I would like to use a self-leveling compound (like this one), but it says it can only be poured up to 1 inch thick.
I am wondering if it can be poured thicker than that if I form it properly or if there is a better solution.
If I understand your question you are creating a raised floor section, 2 1/4 inches higher than the floor below it and you want to place you tub at this height.
I think that you have some sort of frame in place into which you want to pour the LevelQuik, filling it up, so that it will cure into a level surface.
I suggest against that. The maximum thickness of the LevelQuik is stated because, among other reasons, it may not cure properly when poured too thick and it may lose structural integrity when poured too thick.
I'd suggest you use a Deck Mud mix and scree it to your level. If you're nervous about the trueness of the level you could pour the Deck Mud slightly below your line than pour LevelQuik on top of it.
Correct answer by Matthew on September 3, 2021
Pour regular concrete up to 1/2 inch below level, then pour leveling compound on top 1/2 inch thick.
Answered by matthew hart on September 3, 2021
The key issue with screeds is that they’re based on a Portland cement and the chemical reaction requires water as the catylist. The cement takes up the water, bonding it as c3a first and then c2a. The resultant chemical bonds produce a material that in effect is smaller in volume than the original mix. Heat of hydration drives off yet more moisture and consequently, thicker pours result in cracks developing in the screed. Basically, if you want a thicker screed, make sure it’s slow setting- don’t use heating to speed up the process, you could opt for a cement with a fly ash additive. It takes longer to cure. Whilst you could also opt to pour a concrete base and then level off with a screed, you need to ensure the screed itself is thick enough because there will be a cold joint between screed and concrete and if the final pour is too thin, it might start breaking apart.
Answered by Richard Anthony Johnson on September 3, 2021
Uzin NC 170 goes as thick as want in a single pour. This is what we use I'm the flooring industry.
Answered by ryan talley on September 3, 2021
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