Hello everyone!
I have a question about this little nice hole I have in my slab. The slab is meant to be plastered on Wednesday. I was told that it shouldn't be a problem to pour concrete into the hole tomorrow (Monday) and then plaster on Wednesday. However, after reading a bit here and there, I became a little unsure.
What kind of concrete should I use? I was first told EPS, but then read that you shouldn't embed underfloor heating pipes in it. Maybe it doesn't matter when it's so small? Then like regular fine concrete, is it possible to plaster over that hole after two days?
The dimensions of the hole are W60xD25xH10 cm.
Many thanks in advance!
I have a question about this little nice hole I have in my slab. The slab is meant to be plastered on Wednesday. I was told that it shouldn't be a problem to pour concrete into the hole tomorrow (Monday) and then plaster on Wednesday. However, after reading a bit here and there, I became a little unsure.
What kind of concrete should I use? I was first told EPS, but then read that you shouldn't embed underfloor heating pipes in it. Maybe it doesn't matter when it's so small? Then like regular fine concrete, is it possible to plaster over that hole after two days?
The dimensions of the hole are W60xD25xH10 cm.
Many thanks in advance!
You could use Rotbetong http://www.ardex.se/produkter/golvbruk.htm?product=ardex_a_38_mix&key=9
Even regular coarse concrete will probably work too, it's shrinkage cracks that may become visible.
Even regular coarse concrete will probably work too, it's shrinkage cracks that may become visible.
If you want the underfloor heating to provide heat upwards, you should not use EPS cement, but if it doesn't matter at this location, you can use it.
If you are going to cast with concrete, you cannot use regular concrete; you need something that is quick-drying, like Finja 280 Avjämning Grov snabb. However, it takes 3 days for a layer thickness of 100 mm.
If you are going to cast with concrete, you cannot use regular concrete; you need something that is quick-drying, like Finja 280 Avjämning Grov snabb. However, it takes 3 days for a layer thickness of 100 mm.
Is it possible to fill with leca and then have a thinner layer of concrete on top, if it is not going to take any loads?
Yes exactly, that's what I've read as well. Then again, it's not a huge area, but still!H huggan said:
3 days, then it might get tight with time for the leveling compound.
How soon can you continue, for example, laying parquet if you use Finja 280, does it need additional drying time after the leveling compound?
That Rotbetong seems to have quite the speed!Casaloco said:
It's like we also want to get started with the floor (parquet) as soon as possible. It seems it's only 48h for this one. We'll see if there's any store nearby that has it.
A35 mix or a38 mix from ardex
Yes, exactly, got a tip on that before. Seems to be good when you're in a hurryAndreas_kalmar said:
The maximum thickness of the layer is stated as 40-50 mm, should one do it in two rounds or can you go with 100 mm directly, I wonder?
A35mix should work to lay 100mm with good compaction.
What do you think about this? They had this at the building supply store here.
http://www.heydi.se/produkt.asp?VdaID=170
As a complete novice, it gets confusing when it says like this
"
Preparation - Substrate
On plaster and concrete, apply Hey’di Hurtigstöp as a thin casting compound in layer thicknesses between 2 and 4 cm, with firm contact with the substrate. This is secured with a floating screed (slurry) of the substrate with Hey’di Hurtigstöp mixed with Hey’di KZ and water in a ratio of 1:1. Casting is done wet-on-wet in the floating screed."
As a complete novice, I'd ideally just want to mix and refill 8-9 cm directly.
Do I have to, if I understand this, do it in two rounds of 4 cm each? And does the floating screed need to be done before it dries? Wet-on-wet as it says.
It's really a whole science this
http://www.heydi.se/produkt.asp?VdaID=170
As a complete novice, it gets confusing when it says like this
"
Preparation - Substrate
On plaster and concrete, apply Hey’di Hurtigstöp as a thin casting compound in layer thicknesses between 2 and 4 cm, with firm contact with the substrate. This is secured with a floating screed (slurry) of the substrate with Hey’di Hurtigstöp mixed with Hey’di KZ and water in a ratio of 1:1. Casting is done wet-on-wet in the floating screed."
As a complete novice, I'd ideally just want to mix and refill 8-9 cm directly.
Do I have to, if I understand this, do it in two rounds of 4 cm each? And does the floating screed need to be done before it dries? Wet-on-wet as it says.
It's really a whole science this