Hi,
Can anyone point out a figure for what is normally expected in terms of time consumption? I need it to assess the reasonableness of the quotes being collected. It's about a single-story villa with a high vaulted ceiling (up to 5.3 meters at the highest) in many rooms.
All walls (including interior walls) will be built with Porotherm blocks and then plastered with about 1.5 cm lime plaster. The interior walls will have a slightly thinner layer of plaster.
From what I understand, the most common method is to spray-plaster and then paint? But there are also alternatives like mixing color into the plaster (we want white walls).
The interior wall area is about 750 sqm. 100 hours? 10 sqm/hour. Too much or too little?
Since it's quite a large area, it seems like white-colored plaster might be the option that requires the least work?
Can anyone point out a figure for what is normally expected in terms of time consumption? I need it to assess the reasonableness of the quotes being collected. It's about a single-story villa with a high vaulted ceiling (up to 5.3 meters at the highest) in many rooms.
All walls (including interior walls) will be built with Porotherm blocks and then plastered with about 1.5 cm lime plaster. The interior walls will have a slightly thinner layer of plaster.
From what I understand, the most common method is to spray-plaster and then paint? But there are also alternatives like mixing color into the plaster (we want white walls).
The interior wall area is about 750 sqm. 100 hours? 10 sqm/hour. Too much or too little?
Since it's quite a large area, it seems like white-colored plaster might be the option that requires the least work?
The first response has come in. And it's set at 10 weeks for 2 men. That's 800 hours.
My immediate reaction is that it's very much. Granted, the house has high ceilings in many places. But it's still not more than 153 sqm of living space and a garage of 53 sqm to plaster.
If I divide it by the number of rooms, it becomes about 10 rooms of varying sizes. Is it reasonable that it takes a week to plaster a normally-sized bedroom for two men?
My immediate reaction is that it's very much. Granted, the house has high ceilings in many places. But it's still not more than 153 sqm of living space and a garage of 53 sqm to plaster.
If I divide it by the number of rooms, it becomes about 10 rooms of varying sizes. Is it reasonable that it takes a week to plaster a normally-sized bedroom for two men?
Hand-polished spreading and scrubbing with the accompanying mixing and wheeling, excluding priming, painting, etc., I would say a maximum of 5 sqm per hour for a couple of diligent masons. 7 sqm per hour if you assist as a helper and mix/wheel mortar for them.
Approximately...
Remember that all reveals take extra time, everything needs to be primed once, the mortar pocket needs to be filled, coffee needs to be drunk, things need to be cleaned, and most importantly - things can go wrong.
Approximately...
Remember that all reveals take extra time, everything needs to be primed once, the mortar pocket needs to be filled, coffee needs to be drunk, things need to be cleaned, and most importantly - things can go wrong.
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To clarify - my question concerns only plastering. Not any masonry.
Thank you. 5 sqm per hour sounds more normal (and maybe 7 with extra help). It's still quite far from the 1 sqm per hour I've been suggested. But you say "hand plastered" - so it's not sprayed then?
Strange, as the other points in the quote match much better.
Thank you. 5 sqm per hour sounds more normal (and maybe 7 with extra help). It's still quite far from the 1 sqm per hour I've been suggested. But you say "hand plastered" - so it's not sprayed then?
Strange, as the other points in the quote match much better.
Yes, hand-polished - applied by hand. As mentioned, it becomes significantly fewer sqm per hour when considering priming and all related work with reveals, paths, etc., as well as safety for any potential issues. If spraying with a hose, a lot of extra time is spent both in the morning on preparations and at the end of the day, so with two men, it probably doesn't go much faster.
This assumes, however, that it involves masons who can apply the mortar; if using a trowel, it also goes slower.
It should also be mentioned that in a future residential building, one might want to be extra cautious. If the masonry is not straight, it suddenly takes a lot of extra time to build out the plaster, and in such a case, my numbers would fall apart immediately. If all the walls are really poorly laid, one might count down to 1 sqm per hour including everything.
This assumes, however, that it involves masons who can apply the mortar; if using a trowel, it also goes slower.
It should also be mentioned that in a future residential building, one might want to be extra cautious. If the masonry is not straight, it suddenly takes a lot of extra time to build out the plaster, and in such a case, my numbers would fall apart immediately. If all the walls are really poorly laid, one might count down to 1 sqm per hour including everything.
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...and if it is well-built? It's the same bricklayer who is building the walls that will do the plastering. Acknowledged for being skilled, experienced, and meticulous. So, I don't expect crooked walls.
But well, if it takes 800 hours, then it takes 800 hours. It just feels like a very high estimate. That's like 650,000 in labor costs.
Plus plaster. How much does that cost, 100-200 kronor per square meter?
But well, if it takes 800 hours, then it takes 800 hours. It just feels like a very high estimate. That's like 650,000 in labor costs.
Plus plaster. How much does that cost, 100-200 kronor per square meter?
Rough estimate:Mainstream said:
About 18-20 kilos per square meter usually. Here a thinner layer, so maybe 16-18 kilos per square meter including waste.
750 * 16 = 12000 kilos, 750 * 18 =13500 kilos so 12-14 big bags of 1000 kg each.
Lime mortar about 3-8 kr per kilo.
So somewhere between 36000 and 112000 depending on the thickness of the plaster layer, provider, and the mason firm's markup.
Please note that I'm guessing somewhat semi-qualified!
Found this video from Weber: https://www.youtube.com/watch?v=peQ0ggAueRY
They calculate 25 kg/sqm at 30 mm thickness. So your guess isn't too bad! However, I am somewhat shocked by an estimate of around 800,000 to plaster the interior walls (650,000 in labor cost + materials + 10% miscellaneous).
I need to check with more contractors. When I watch the video above, I can't possibly understand why they estimate as low as 1 sqm/hour. That's equivalent to a whole workweek for an average-sized bedroom.
I don't know if it's comparable, but the times I've hired painters to remove wallpaper, skim coat, sand, and paint, they have accomplished significantly more in a week. The tasks look quite similar to a layman.
They calculate 25 kg/sqm at 30 mm thickness. So your guess isn't too bad! However, I am somewhat shocked by an estimate of around 800,000 to plaster the interior walls (650,000 in labor cost + materials + 10% miscellaneous).
I need to check with more contractors. When I watch the video above, I can't possibly understand why they estimate as low as 1 sqm/hour. That's equivalent to a whole workweek for an average-sized bedroom.
I don't know if it's comparable, but the times I've hired painters to remove wallpaper, skim coat, sand, and paint, they have accomplished significantly more in a week. The tasks look quite similar to a layman.
Isolde states in this thread http://www.byggahus.se/forum/stenhus/67949-gips-puts-eller-gipsskivor.html#post463978 that
"1 sqm of interior plaster takes one/some minutes with machine plaster and an aggregate."
I am very confused.
"1 sqm of interior plaster takes one/some minutes with machine plaster and an aggregate."
I am very confused.
Yes, check with others. Please follow up here with the numbers you get.
The film you linked to is for gypsum plaster, not entirely dissimilar but still a completely different material. Gypsum plaster is quicker to work with than lime mortar. The procedure with lime mortar is more like this film, probably without the mesh:
https://www.youtube.com/watch?v=h9OOw1V-ing
The film you linked to is for gypsum plaster, not entirely dissimilar but still a completely different material. Gypsum plaster is quicker to work with than lime mortar. The procedure with lime mortar is more like this film, probably without the mesh:
https://www.youtube.com/watch?v=h9OOw1V-ing
Member
· Stockholms Län
· 702 posts
I watched a renovation program from England where they were fixing up an old house, and two men worked for two weeks on two rooms with lime plastering, i.e., about 80h/room. No more info, unfortunately. I was a bit shocked as I was planning to have some plastering done in the future and the potential cost started to escalate for me...
I was thinking maybe 2 days/room (about 60m² wall) for two people x500SEK:
Day1: Install batten strips and general preparations and transportation of plaster and mixer. 16h
Day2: Plaster and clean up 16h
=> 16000SEK/room + materials. => labor cost 267SEK/m².
In your case 750m² and 800hx500SEK=400kSEK/750m² => 533SEK/m². That is double my estimate, which fits the time spent on the English renovation program.
I was thinking maybe 2 days/room (about 60m² wall) for two people x500SEK:
Day1: Install batten strips and general preparations and transportation of plaster and mixer. 16h
Day2: Plaster and clean up 16h
=> 16000SEK/room + materials. => labor cost 267SEK/m².
In your case 750m² and 800hx500SEK=400kSEK/750m² => 533SEK/m². That is double my estimate, which fits the time spent on the English renovation program.
We have just plastered the inside of Leca walls. I'm not sure of the exact square meters, but it took about 2 days per room. They applied it by hand and I asked them to be extremely careful since we will have grazing light on several of the walls.
But we're going with a running meter price. So if you know the guys and know they do a good job, why not do the same?
But we're going with a running meter price. So if you know the guys and know they do a good job, why not do the same?
Member
· Stockholms Län
· 702 posts
How many were working?Videonisse said:
I hired a man who plastered ~350m² with lime plaster. He took more than 6 months, but we had a special deal and there was no rush. He didn't work many hours a week for me.
We mixed pigment in the last layer of plaster. You can mix 6-8% at most. Mix the pigment and plaster dry to get the final shade immediately, then add some water and apply it to the wall for a sample area. We tested quite a few colors before we decided.
Here's an example of how we did it: http://www.byggahus.se/forum/byggmaterial-byggteknik/211314-genomfargad-kalkputs-i-vardagsrum.html
I think 5-7 sqm/hour is extremely optimistic. Keep in mind that there should be at least two layers. With some knowledge of German, you can read more here: http://www.solubel.de/anwendungen/ziegelmauerwerk.php
The conclusion is 2-3 sqm/hour:
priming: 2-4 min/sqm
Base plaster 15mm: 12-18 min and 20-30 kg/sqm
Waiting time: 1-3 days for the plaster to start setting:
top coat plaster 2-4mm: 10-15 min and 7-9 kg/sqm (depends on the surface finish you want)
waiting time: - another couple of days....
Lime plaster sets very slowly, but with your large areas, it's not a problem as they can continue with the next room instead of drinking coffee=)
Magnus
We mixed pigment in the last layer of plaster. You can mix 6-8% at most. Mix the pigment and plaster dry to get the final shade immediately, then add some water and apply it to the wall for a sample area. We tested quite a few colors before we decided.
Here's an example of how we did it: http://www.byggahus.se/forum/byggmaterial-byggteknik/211314-genomfargad-kalkputs-i-vardagsrum.html
I think 5-7 sqm/hour is extremely optimistic. Keep in mind that there should be at least two layers. With some knowledge of German, you can read more here: http://www.solubel.de/anwendungen/ziegelmauerwerk.php
The conclusion is 2-3 sqm/hour:
priming: 2-4 min/sqm
Base plaster 15mm: 12-18 min and 20-30 kg/sqm
Waiting time: 1-3 days for the plaster to start setting:
top coat plaster 2-4mm: 10-15 min and 7-9 kg/sqm (depends on the surface finish you want)
waiting time: - another couple of days....
Lime plaster sets very slowly, but with your large areas, it's not a problem as they can continue with the next room instead of drinking coffee=)
Magnus
2 old men