Hello. Planning to cast pipes for underfloor heating in the hall next weekend. But I've searched and searched for how much I need but can't find it anywhere. I spoke to one of the guys working at the hardware store where I will probably buy cell plastic, reinforcement mesh, fine concrete, and leveling compound. He wasn't sure either but thought it would take 13 bags for my 4m² at 50mm thick. Of course, I checked Finja's website, but it only states how much is needed when casting in pipes. Same info he had at the store. Link.
What I want to know is: How many liters of fine concrete are needed per m²/mm.
It would be nice to see a link where it says so. And please write how you found the answer.
Thanks in advance, best regards Micke.
What I want to know is: How many liters of fine concrete are needed per m²/mm.
It would be nice to see a link where it says so. And please write how you found the answer.
Thanks in advance, best regards Micke.
I usually calculate 13 liters per sack and it has been accurate
4 x 0.05 = 0.2 200 liters
200 / 13 = 15 sacks
4 x 0.05 = 0.2 200 liters
200 / 13 = 15 sacks
A 25 kg bag yields approximately 13 liters of mixed concrete. For your floor, you need 400*0.5/13=15.4 bags. Therefore, 16 bags.
One mm per m² is 0.01*100=1 liter. This corresponds to 25/13=1.92 kg of dry concrete. For your floor, you need 4*50=200 liters, i.e., 200*1.92=384 kg. In bags, that calculates to 384/25=15.4 bags. 16 bags again
One mm per m² is 0.01*100=1 liter. This corresponds to 25/13=1.92 kg of dry concrete. For your floor, you need 4*50=200 liters, i.e., 200*1.92=384 kg. In bags, that calculates to 384/25=15.4 bags. 16 bags again
4m² x 0.05 meter deep = 0.2 m³ = 200 liters.
200 liters / 13 liter bag = 15.4 bags = 16 bags. To clarify.
Lucky to have you who know the "little" I don't. ☺
Thank you so much. Now I know I should buy 16 bags of fine concrete and 3 bags of self-leveling compound which should be enough for about 1cm compound.
200 liters / 13 liter bag = 15.4 bags = 16 bags. To clarify.
Lucky to have you who know the "little" I don't. ☺
Thank you so much. Now I know I should buy 16 bags of fine concrete and 3 bags of self-leveling compound which should be enough for about 1cm compound.
Do you think it's worth traveling to Byggmax round trip = 90 km? Since it costs about 400 SEK less there than at the local building store? I even have a discount there through work, but it's still expensive. They also have cellplast, armeringsmatta, finbetong and flytspackel at Byggmax.
Good or anus as it is usually called. Would you do it?
Good or anus as it is usually called. Would you do it?
Is one week too little for the concrete to cure before you can apply the filler? Or do you have to wait 2 weeks?
Then between filling and tiling, one week should be enough, right?
Then between filling and tiling, one week should be enough, right?
If you cast with ready-mix coarse or fine, you can forget about the waiting time. The quality of such casting isn't very high.
Slip compound might be suitable instead of fine/coarse concrete. Then you can proceed within a few days with leveling compound, and you can actually cast completely with the slip compound and skip the leveling compound directly.
We have used Maxit Fibre Flow 4310 (probably called Weber something nowadays) when we've done floor leveling. Cheap and quite okay for private use. Max thickness is about 50 mm. However, it dries slowly, 1 week/cm if you're going to lay carpet/impermeable layers, but can be used relatively soon for tiling without an impermeable layer (like in a hallway).
Slipsats is a good alternative - I think you can build more with it, and it is about a few tens cheaper in price compared to 4310 from what I recall.
Slipsats is a good alternative - I think you can build more with it, and it is about a few tens cheaper in price compared to 4310 from what I recall.