Hello everyone,
We are currently planning the construction of a solid brick house (urban villa with 160 sqm (1722 sq ft)), with two full floors plus a basement, without KfW funding. The standard option with the general contractor includes 36.5 cm (14 inches) porous S9 bricks without integrated insulation (Lambda value 0.09) with a two-layer plaster, no external thermal insulation composite system (ETICS) => U-value 0.23 W/(m²K).
Now we have the option to choose TV7 bricks (Lambda value 0.07) with integrated insulation instead, for an additional cost of nearly 5000 euros => U-value 0.23 W/(m²K).
Is this additional cost worth it?
It is also not yet decided whether to install a ventilation system with heat recovery (additional cost 7000 euros). Our concern here is not the comfort it provides but really the efficiency and cost-benefit factor. Is a ventilation system really necessary to avoid moisture problems? I am not asking about the comfort of ventilating three times a day, but rather whether anyone has experienced mold issues in a relatively new house due to the absence of a ventilation system, especially if windows were only opened once or twice occasionally.
Thank you in advance for your information and opinions.
We are currently planning the construction of a solid brick house (urban villa with 160 sqm (1722 sq ft)), with two full floors plus a basement, without KfW funding. The standard option with the general contractor includes 36.5 cm (14 inches) porous S9 bricks without integrated insulation (Lambda value 0.09) with a two-layer plaster, no external thermal insulation composite system (ETICS) => U-value 0.23 W/(m²K).
Now we have the option to choose TV7 bricks (Lambda value 0.07) with integrated insulation instead, for an additional cost of nearly 5000 euros => U-value 0.23 W/(m²K).
Is this additional cost worth it?
It is also not yet decided whether to install a ventilation system with heat recovery (additional cost 7000 euros). Our concern here is not the comfort it provides but really the efficiency and cost-benefit factor. Is a ventilation system really necessary to avoid moisture problems? I am not asking about the comfort of ventilating three times a day, but rather whether anyone has experienced mold issues in a relatively new house due to the absence of a ventilation system, especially if windows were only opened once or twice occasionally.
Thank you in advance for your information and opinions.
Building standard. Use windows with regulated air intake. Google it. Also, install an exhaust fan, ideally a Helios model, on each floor, preferably in the bathroom or utility room. This prevents mold, ensures good air quality, is cost-effective, and still energy-efficient when heating. Efficient enough, at least. – Keep in mind: your house will age. Everything works well when new, but as it gets older, the good old British principle "simple, rugged, reliable" proves invaluable. Karsten
11ant schrieb:
Then just take that one. Black, no sugar. Always this nonsense with left-rotating soy milk. The twin-turbo isn’t worth it if you only drive in the city.
I don’t understand why non-experts, when they become builders, think that some magic has to be hidden behind a fifth decimal place in the product name. Even the brick manufacturers are all just cooking with water.
Sort of. My car is worth it – but I will change the color next time because that’s exactly the point that isn’t worth it. 11ant, if I were a building professional, I wouldn’t try to get information here!
I admit, I have seen better working forum searches than this one – but the question of whether the XY brick as GTI 16V is still the very best certainly cannot be overlooked here just because it might be asked too rarely. And for the basic answers to this, it’s basically: Same Procedure as Every Week.
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If the goal is only to save on heating costs, it is not worth it; you probably won’t see a payback with 5,000€ anymore. Before mold appears, you will experience discomfort, headaches, and fatigue. I wouldn’t want to do without a mechanical ventilation system with heat recovery. If you don’t want to spend that much money, then at least choose the solution from nordlys.
Yes, but you can also live in these brick houses without controlled mechanical ventilation, just like many people did before us.... I see it as a matter of comfort.... it’s a myth that you will get mold in a brick house without it....
Better insulation values, well, yes, but what about soundproofing, for example? Have you ever looked into that?
Better insulation values, well, yes, but what about soundproofing, for example? Have you ever looked into that?
S
Susanne N.22 May 2019 11:09Could someone please advise me? If I place more importance on sound insulation than on thermal insulation when building a house, which type of brick should I choose? Probably a solid brick, right? Are there other building materials suitable for this purpose? Which one is cheaper?
Thank you in advance!
Thank you in advance!
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