Hello
I have an outbuilding that has been a farmhand's quarters and a washhouse. The floor is a concrete slab that is directly on the ground. I plan to convert the building into a living space. Unfortunately, the washhouse floor is lower than the floor in the farmhand's quarters. I would like to pour up the floor in the washhouse and then lay tiles over the floor in both areas.
To insulate a bit, I was thinking of pouring the top layer with EPS cement. Unfortunately, the level difference between the two areas is more than 30 cm, which makes it impractical to pour concrete all the way.
The question is what can be used to fill in to avoid moisture problems in the future?
One alternative I have considered is mixing very coarse crushed stone into the concrete to reduce the amount of cement needed. Would this work? Does anyone know what proportions can be used in that case? Another option I have considered is embedding washed stone blocks in the concrete. Are any of these alternatives good, or is there maybe something better?
Best regards,
Aved