Hello,

I would like to make seamless white high-gloss floor in my 68 sqm living room at home, but I have some hesitations with the choice of materials...

The apartment has old cement based screed which is very rough and unlevelled, so I need to level it with some self-levelling product.

The official Mapei dealer offered me a system containing Ultratop White polymer-modified micro cement for the levelling and Mapei Mapefloor I 302 SL epoxy on top of it, of course with all supportive materials like primers, etc...

The problem is that Ultratop is multiple times more expensive than Mapei Ultraplan Revolution self-levelling screed and I really don't understand why I need to invest money in Ultratop, while I can use Ultraplan. I found that Ultraplan has a compressive strength of 28 N/mm, while most epoxy resin manufacturers requires min. 25 N/mm. When I asked some epoxy manufacturers they told me that I can use whatever self-levelling screed I want under their epoxy. However when I asked Mapei for opinion, they told me that they absolutely don't recommend Ultraplan Renovation under epoxy as it is not strong enough. This is very confusing and I don't know what to do. Generally I would agree with Mapei if my project was for industrial use, but it's a residential project and I really don't understand why would I need Ultratop beneath the epoxy.

Alternatively I can install only Ultratop White and polish it to high-gloss finish instead of using Epoxy resign, but Mapei has a requirement to lay down Ultratop with a thickness of min. 10mm if the floor will be polished in comparison with just 5 mm if it will be left with it's natural surface. Respectively I will need 2x more material leading to a 2x more expensive price.

Anyone with experience in this direction? Thanks!