Had a large hole in the drain of my single-story house. Have now chiseled up about 8 sqm and have 75 sqm of the existing slab left. Was thinking of leveling with sand since the slab is quite rough, with a variation of about 4 cm at most. Then lay insulation and cast in floor heating. Does this seem like an okay solution? I heard someone say that leveling with sand isn't done nowadays. But it feels like this solution should be much better than it was before with wooden joists and insulation placed on top of an uninsulated 10 cm slab.
Really hope someone can have some ideas as it's quite urgent to fix the house since having double residences is not the most economical!
Really hope someone can have some ideas as it's quite urgent to fix the house since having double residences is not the most economical!
not sand.
since you have 75kvm that is not insulated, the cellplast on 8kvm doesn't make much difference.
sure, is it a "whole" concrete slab those 8kvm?
since you have 75kvm that is not insulated, the cellplast on 8kvm doesn't make much difference.
sure, is it a "whole" concrete slab those 8kvm?
I don't quite follow what you've done and what you plan to do?!
But you don't level with sand, as it is not capillary-breaking, instead use (washed) macadam. Now it probably doesn't matter much if it's as little as four cm and also only in certain places.
Then you lay down foam board, reinforcement, and underfloor heating pipes, and then you cast your floor.
But you don't level with sand, as it is not capillary-breaking, instead use (washed) macadam. Now it probably doesn't matter much if it's as little as four cm and also only in certain places.
Then you lay down foam board, reinforcement, and underfloor heating pipes, and then you cast your floor.
as above gravel (preferably as fine as possible). then cellular plastictheguden said:
Okok. Sorry for the poor info. The entire slab is 83 sqm and is uninsulated. I've ripped up 8 sqm in the middle and replaced the drain pipes. So there's no slab at all there currently. On those 8 sqm, I plan to insulate with 10-15 cm. For the rest, I was thinking of leveling with sand, then 5 cm of cellular plastic and then pouring concrete over the entire 83 sqm.
no makadam!!mexitegel said:Ok, I get it. Skip the sand and go with kross as magentens suggests.
kross in my world means rock crush/sub-base material = bearing layers and reinforcement layers for roads with both lighter and heavier traffic. Fractions including 0/16, 0/32, 0/63, 0/90 = "sand" may occur
makadam = manufacture of asphalt mix and concrete, but also for roads, forest roads, house foundations, garden paths, garage areas, and railways. Fractions including 8/11, 11/16, and 16/32 should not have any "sand" in this as it should preferably be washed.
Yes, there is a 4cm difference across the entire slab, with the average being around 2cm. The idea was that whatever I do should be better than what was there with an uninsulated slab and wooden joists. Then 45ull as insulation. The slab looked fine otherwise, so I don't think it has been exposed to much moisture. Crush sound really good, call the nearest gravel pit and inquire tomorrow. Thanks 👍
nah. you shouldn't use stone chips either. anything under 8mm is not really good for that purpose.magnetens said:
Then I would have preferred 2-4, it will work fine for leveling. If you choose a coarser material instead, it becomes much harder to get it reasonably flat, especially with so little space...
Good luck!
Good luck!
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nah. enough for those fractions to exist. 2-4cm is coarse for your part. if you have a good "grustag" they will help you.theguden said: