Hello,
I am interested in prefabricated house construction. I often read online that people decide against certain companies because the walls or the wall structure are not considered very good. I have also read that there are different types of wall constructions. What factors should be considered when choosing the wall or the type of wall assembly?
Thank you in advance for your answers.
I am interested in prefabricated house construction. I often read online that people decide against certain companies because the walls or the wall structure are not considered very good. I have also read that there are different types of wall constructions. What factors should be considered when choosing the wall or the type of wall assembly?
Thank you in advance for your answers.
J
JH-CADArchitekt5 Jul 2012 10:04Reno32 schrieb:
Okay, what U-values should be aimed for? And is there anything else to consider with prefabricated houses?>0.12 W/m²K (0.02 BTU/hr·ft²·°F). Otherwise, you’ll regret it in 15 years when energy prices rise.
Retrofitting insulation is very expensive because scaffolding, replastering, and labor costs are the most costly parts of the process. It’s better to insulate properly from the start. The material itself is very cheap (mineral wool at 40 €/m³ (approximately $11/ft³)), and with new construction, you have installation costs anyway, whether you use 8 cm (3 inches) or 25 cm (10 inches) of insulation! The additional material costs will be recovered through lower heating costs within 5–7 years at current prices.
Hello,
It generally depends on the building envelope, including the ground slab/basement, collar beam ceiling, roof, windows, front door, and so on.
For example, we chose floor-to-ceiling windows in the children's rooms, bedroom, and many large windows in the living room (southwest). This naturally affects the overall U-value of the building envelope somewhat but increases living comfort.
Regards...
It generally depends on the building envelope, including the ground slab/basement, collar beam ceiling, roof, windows, front door, and so on.
For example, we chose floor-to-ceiling windows in the children's rooms, bedroom, and many large windows in the living room (southwest). This naturally affects the overall U-value of the building envelope somewhat but increases living comfort.
Regards...
N
Nordlicht6 Jul 2012 06:40I think prefabricated houses are a really good idea. Above all, you can customize everything yourself, even the interior 🙂 I once saw a documentary about them and have to say that I am also very interested in such a house. Have you already made a decision?
JH-CADArchitect schrieb:
>0.12 W/m²K. You will regret anything else in 15 years when energy prices rise. I see this somewhat differently. If the U-value increases, the demand rises!Moreover, this is a one-sided consideration without taking the overall context into account. For every building, there is an economically optimal insulation thickness. In particular, the type of heat generation must be considered. With conventional heat generators, somewhat better insulation is generally required because consumption is higher than demand. With heat pumps, it is the opposite. It should not be forgotten that insulation (heat transfer coefficient, HT) only affects the demand/consumption for heating, not for domestic hot water production.
Best regards.
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