ᐅ Lightweight concrete with infill? The dilemma of choosing the right masonry system
Created on: 31 Mar 2019 12:12
K
Kevinius
Hello,
we are planning to build a new single-family house and are currently in the selection phase regarding the type of block.
Our current favorite is the Liapor SL Plus with a thickness of 36.5 cm (14.4 inches).
However, since this block is not commonly used in our area (Saarland), our research so far has shown that it is sold at a relatively high price and that few masons have experience working with it.
Some masons / construction managers have also advised against blocks with filler, as they are said to be less or not at all vapor permeable, which could cause moisture to move from the filler inward over time, resulting in stains on plaster or wallpaper. This seems rather far-fetched to me?!
Besides thermal insulation, we also place great importance on soundproofing, but we definitely want to build monolithically—so no external thermal insulation composite systems (ETICS) / external wall insulation.
What other options do we have in this regard?
Aerated concrete seems to be ruled out.
Clay blocks (Poroton) are probably problematic when it comes to drilling holes and fixing things.
We would very much appreciate any suggestions on this topic.
Best regards
we are planning to build a new single-family house and are currently in the selection phase regarding the type of block.
Our current favorite is the Liapor SL Plus with a thickness of 36.5 cm (14.4 inches).
However, since this block is not commonly used in our area (Saarland), our research so far has shown that it is sold at a relatively high price and that few masons have experience working with it.
Some masons / construction managers have also advised against blocks with filler, as they are said to be less or not at all vapor permeable, which could cause moisture to move from the filler inward over time, resulting in stains on plaster or wallpaper. This seems rather far-fetched to me?!
Besides thermal insulation, we also place great importance on soundproofing, but we definitely want to build monolithically—so no external thermal insulation composite systems (ETICS) / external wall insulation.
What other options do we have in this regard?
Aerated concrete seems to be ruled out.
Clay blocks (Poroton) are probably problematic when it comes to drilling holes and fixing things.
We would very much appreciate any suggestions on this topic.
Best regards
W
wurmwichtel1 Apr 2019 17:54Kevinius schrieb:
...aerated concrete is probably ruled out already.... Why?
W
wurmwichtel2 Apr 2019 15:06Oh yes – totally awful!
And wanting to live in a 30 km/h (about 20 mph) zone is absolutely out of the question!
Only something like the Adolfbau on Berlin’s Reinhardtstraße can handle that – 3 meters (about 10 feet) of reinforced concrete as exterior walls might just be enough.
That guarantees silence, and the windowsill surfaces are unparalleled!
On one side of our property, light rail vehicles pass by every half hour. Well… the house is 150 meters (about 490 feet) away from the tracks, but still.
When a crow sits on the chimney rain cover singing its delicate song, that is the most noticeable sound – louder than the rubber-tired vehicles passing the house on the other side of the property.
And wanting to live in a 30 km/h (about 20 mph) zone is absolutely out of the question!
Only something like the Adolfbau on Berlin’s Reinhardtstraße can handle that – 3 meters (about 10 feet) of reinforced concrete as exterior walls might just be enough.
That guarantees silence, and the windowsill surfaces are unparalleled!
On one side of our property, light rail vehicles pass by every half hour. Well… the house is 150 meters (about 490 feet) away from the tracks, but still.
When a crow sits on the chimney rain cover singing its delicate song, that is the most noticeable sound – louder than the rubber-tired vehicles passing the house on the other side of the property.
wurmwichtel schrieb:
Oh yes – absolutely terrible!
And wanting to live in a 30 km/h (20 mph) zone on top of that is just not an option!
Only something like the Adolf building on Berlin’s Reinhardtstraße would work – 3 meters (10 feet) of reinforced concrete as exterior walls might just do the trick.
Then you have peace and quiet, and the window sills are second to none!
On our property, every half hour a railcar passes on one side. Well... the railway is 150 meters (490 feet) away from the house, but still.
If a crow perches on the chimney rain cap and sings its delicate song, that’s the loudest sound you hear – louder than the rubber-tired vehicles passing the house on the other side of the property.What exactly did you build with?
W
wurmwichtel8 Apr 2019 11:33Exterior aerated concrete (monolithic, 36cm (14 inches) wall), interior calcium silicate bricks (bulk density 1.8t/m³)
The original poster should choose the construction material most commonly used in their region or the one preferred by their main contractor, and that will work well.
We initially considered using Poroton but switched to aerated concrete and calcium silicate bricks for financial reasons.
If the original poster is concerned about noise from children playing during autumn and winter or loud intimate activities in the bedroom, calcium silicate bricks combined with a ventilated cavity wall system (WVDS) plus soundproof glazing can help.
The original poster should choose the construction material most commonly used in their region or the one preferred by their main contractor, and that will work well.
We initially considered using Poroton but switched to aerated concrete and calcium silicate bricks for financial reasons.
If the original poster is concerned about noise from children playing during autumn and winter or loud intimate activities in the bedroom, calcium silicate bricks combined with a ventilated cavity wall system (WVDS) plus soundproof glazing can help.
Well, aerated concrete combined with decentralized ventilation can be quite noisy. And even diesel locomotives traveling at 30 km/h (18.6 mph) can be loud—just ask my wife.
When she stayed overnight at my parents’ house for the first time (many moons ago), she was abruptly woken up at 5:30 a.m. About 30 meters (98 feet) away runs a private industrial railway, where potash is transported in full trains Monday through Saturday. There is a hill near the house, meaning the 12-cylinder engines of the BR232 Ludmilla are revved up right near the house and then throttled down. Sometimes you can even feel the windows shake. It was even more intense with the older locomotives that had 16-cylinder engines and horn blowers.
Porous concrete just doesn’t stand a chance against that.
When she stayed overnight at my parents’ house for the first time (many moons ago), she was abruptly woken up at 5:30 a.m. About 30 meters (98 feet) away runs a private industrial railway, where potash is transported in full trains Monday through Saturday. There is a hill near the house, meaning the 12-cylinder engines of the BR232 Ludmilla are revved up right near the house and then throttled down. Sometimes you can even feel the windows shake. It was even more intense with the older locomotives that had 16-cylinder engines and horn blowers.
Porous concrete just doesn’t stand a chance against that.
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