ᐅ Y-Tong (aerated concrete) – a quality building material? (Sound insulation!)
Created on: 20 Aug 2018 19:58
B
Bauherr&-frau
Dear Forum,
Our developer plans to use "Ytong PPW2 d = 36.5 cm (14.4 inches) for the exterior walls according to the scope of work. Inside, 17.5 cm (6.9 inches). On the outside, a 3 mm (0.1 inch) mineral-based lightweight plaster will be applied. To me, this seems somewhat minimal compared to the insulation and materials others are using.
We are wondering if the thermal insulation requirements are met without additional insulation? And what about mold and ventilation? A air-to-water heat pump with underfloor heating is planned.
What worries us even more is the soundproofing, since we have a cobblestone street right outside. A friend who is an engineer told me yesterday that Ytong has "poor sound insulation properties."
So even triple-glazed windows with enhanced soundproofing probably won’t help much? [B] I would appreciate honest clarification and possibly some alternative suggestions. We are not experts and I don’t want to hear every car! Some friends of ours build with calcium silicate blocks and are very satisfied. Their father is an architect and swears by them.
Many thanks and best regards! We would be lost without you!
Our developer plans to use "Ytong PPW2 d = 36.5 cm (14.4 inches) for the exterior walls according to the scope of work. Inside, 17.5 cm (6.9 inches). On the outside, a 3 mm (0.1 inch) mineral-based lightweight plaster will be applied. To me, this seems somewhat minimal compared to the insulation and materials others are using.
We are wondering if the thermal insulation requirements are met without additional insulation? And what about mold and ventilation? A air-to-water heat pump with underfloor heating is planned.
What worries us even more is the soundproofing, since we have a cobblestone street right outside. A friend who is an engineer told me yesterday that Ytong has "poor sound insulation properties."
So even triple-glazed windows with enhanced soundproofing probably won’t help much? [B] I would appreciate honest clarification and possibly some alternative suggestions. We are not experts and I don’t want to hear every car! Some friends of ours build with calcium silicate blocks and are very satisfied. Their father is an architect and swears by them.
Many thanks and best regards! We would be lost without you!
Bookstar schrieb:
Phew, Ytong is not good. I don’t understand why people build with it; there are so many better options.Very qualified report
Bauherr&-frau10 Oct 2018 21:00Bookstar schrieb:
Phew, Ytong is not good. I don’t understand why anyone builds with it, there are so many better options.I’ll withdraw my initial comment since Blaupuma already wrote the same thing.
Sorry, I didn’t mean to start a new fundamental debate. But I’ll summarize again: there are many ways to build the exterior wall – that’s what I’ve also learned here.
It can be calcium silicate brick with external thermal insulation composite system (ETICS), which we basically find acceptable, but unfortunately is not so open to insulation. I don’t want combustible hazardous waste on my exterior wall. But it can also be hollow bricks or pumice blocks.
Or it can also be aerated concrete. For us, this is the best monolithic and building physics solution. Sound insulation with PP4 is completely sufficient (calcium silicate brick partly has the same values). Thermal insulation is very good. The building can breathe. Price-performance ratio is reasonable. Stability is certain, since it is even suitable for multi-story construction. This will definitely hold our two-story townhouse and also the kitchen cabinet.
Bauherr&-Frau schrieb:
So friends, we had a 2.5-hour meeting today with our independent building expert who will support us with 20 visits. Absolutely convincing. We have decided on a monolithic Ytong wall construction, 36.5 cm (14.4 inches) thick, using the ThermStrong PP4; bulk density 0.5; U-value 0.26; thermal conductivity (lambda) 0.10. She said this is more than sufficient, provides 51 dB sound insulation, and is significantly more solid than the PP2. We are very satisfied with this now.
THANK YOU ALL FOR YOUR CONTRIBUTIONS TO THIS THREAD!
Greetings to my Ytong partner Nordlys! I am also interested in the Ytong ThermStrong.
According to which energy saving regulation standard are you building with the ThermStrong at a U-value of 0.26?
What kind of additional cost was quoted compared to the standard block? (No idea if prices are the same everywhere, but according to the online catalog, the ThermStrong is about 40% more expensive.)
Bauherr&-frau14 Oct 2018 16:19Building according to the current Energy Saving Ordinance 2014 including the 2014 tightening. The Therm Strong PP4 -0.50 is cheaper than the PP2 -0.35 due to lower insulation values. The difference, however, is minimal. About €3 / m3 (approximately $3.30 / yd³) – according to my research for retail prices online.
According to the price list, Therm Strong PP4 -0.50 (U-value: 0.26) costs around €261.80 / m3 (approximately $261.80 / yd³) and Therm Super PP2 -0.35 (U-value: 0.21) around €256.20 / m3 (approximately $256.20 / yd³).
According to the price list, Therm Strong PP4 -0.50 (U-value: 0.26) costs around €261.80 / m3 (approximately $261.80 / yd³) and Therm Super PP2 -0.35 (U-value: 0.21) around €256.20 / m3 (approximately $256.20 / yd³).
My benchmark was, as the name suggests, the ThermStandard
(each with a width of 365mm (14 inches))
ThermStandard Ytong PP 2-0.35 λ:0.09 U:0.23 €192.10/m³ (cubic meter) 47.3 dB
ThermStandard Ytong PP 2-0.40 λ:0.10 U:0.26 €178.40/m³ 49.1 dB
ThermStrong Ytong PP 4-0.50 λ:0.10 U:0.26 €261.80/m³ 51.3 dB
The blocks with better insulation values compared to the ThermStandard are naturally more expensive.
ThermSuper Ytong PP 2-0.35 λ:0.08 U:0.21 €256.20/m³ 47.3 dB
ThermUltra Ytong PP 1.6-0.25 λ:0.07 U:0.18 €316.60/m³ 43.0 dB
All prices exclude VAT.
(each with a width of 365mm (14 inches))
ThermStandard Ytong PP 2-0.35 λ:0.09 U:0.23 €192.10/m³ (cubic meter) 47.3 dB
ThermStandard Ytong PP 2-0.40 λ:0.10 U:0.26 €178.40/m³ 49.1 dB
ThermStrong Ytong PP 4-0.50 λ:0.10 U:0.26 €261.80/m³ 51.3 dB
The blocks with better insulation values compared to the ThermStandard are naturally more expensive.
ThermSuper Ytong PP 2-0.35 λ:0.08 U:0.21 €256.20/m³ 47.3 dB
ThermUltra Ytong PP 1.6-0.25 λ:0.07 U:0.18 €316.60/m³ 43.0 dB
All prices exclude VAT.
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