Dear forum community,
We have been quiet readers for some time now and are currently close to signing the construction contract. The plot was officially purchased last week.
At the moment, we are still considering two options: a solid (brick or block) house and a prefabricated house. We are now facing the difficult choice regarding the wall construction and building method:
(from outside to inside)
Prefabricated house (significantly above KfW 40+ standard, close to passive house): 5 mm (0.2 inch) exterior plaster, 100 mm (4 inch) external thermal insulation composite system (polystyrene), 12.5 mm (0.5 inch) Fermacell panels, 160 mm (6.3 inch) timber studs with insulation, 0.2 mm (0.008 inch) vapor retarder, 12.5 mm (0.5 inch) Fermacell panels, 80 mm (3.1 inch) timber studs with insulation, 12.5 mm (0.5 inch) Fermacell panels.
Solid house (Energy Saving Ordinance / EnEV standard): exterior plaster, 36.5 cm (14.4 inch) aerated concrete, interior plaster.
Now my two questions:
Which building method would you prefer and why?
Is it worthwhile to use double boarding with 2 x 12.5 mm (2 x 0.5 inch) Fermacell panels on all interior sides of the prefabricated house walls?
A building blog is currently in preparation. We look forward to sharing our construction experience and contributing back as previously quiet readers.
Best regards
Family schroedinxer
We have been quiet readers for some time now and are currently close to signing the construction contract. The plot was officially purchased last week.
At the moment, we are still considering two options: a solid (brick or block) house and a prefabricated house. We are now facing the difficult choice regarding the wall construction and building method:
(from outside to inside)
Prefabricated house (significantly above KfW 40+ standard, close to passive house): 5 mm (0.2 inch) exterior plaster, 100 mm (4 inch) external thermal insulation composite system (polystyrene), 12.5 mm (0.5 inch) Fermacell panels, 160 mm (6.3 inch) timber studs with insulation, 0.2 mm (0.008 inch) vapor retarder, 12.5 mm (0.5 inch) Fermacell panels, 80 mm (3.1 inch) timber studs with insulation, 12.5 mm (0.5 inch) Fermacell panels.
Solid house (Energy Saving Ordinance / EnEV standard): exterior plaster, 36.5 cm (14.4 inch) aerated concrete, interior plaster.
Now my two questions:
Which building method would you prefer and why?
Is it worthwhile to use double boarding with 2 x 12.5 mm (2 x 0.5 inch) Fermacell panels on all interior sides of the prefabricated house walls?
A building blog is currently in preparation. We look forward to sharing our construction experience and contributing back as previously quiet readers.
Best regards
Family schroedinxer
For comparison, I would get an offer for aerated concrete with a thermal conductivity of 0.08 W/(m·K).
Without wanting to confuse you too much... is Poroton also an option? I’m not sure what you mean by Daimler Stammwerk, but it sounds like SiFi or at least the greater Stuttgart area. That’s not very far from me. Around here, Poroton is often used, especially by general contractors. Often it’s cheaper with the same insulation value.
Without wanting to confuse you too much... is Poroton also an option? I’m not sure what you mean by Daimler Stammwerk, but it sounds like SiFi or at least the greater Stuttgart area. That’s not very far from me. Around here, Poroton is often used, especially by general contractors. Often it’s cheaper with the same insulation value.
S
schroedinxer24 Nov 2019 11:53face26 schrieb:
For comparison, I would at least get an offer for aerated concrete with a thermal conductivity of 0.08 W/(m·K).
Without wanting to confuse you too much... Is Poroton also an option? I’m not sure what you mean by Daimler Stammwerk, but it sounds like the Stuttgart metropolitan area or at least Greater Stuttgart. That’s not far from me. In this region, Poroton is often used, especially by general contractors. Often more affordable at the same insulation value. Yes, Greater Stuttgart, referring to the Stuttgart-Untertürkheim plant. Thanks for the tip; it is definitely an option, so I will request offers accordingly, also for the better aerated concrete. So far, we have been focused on timber frame construction and are already quite familiar with that. I realize I need to study more about solid construction.
schroedinxer schrieb:
Yes, the Stuttgart metropolitan area is meant, specifically the Stuttgart-Untertürkheim plant. Even closer than that
...so if you haven’t settled on one option yet, I would definitely consider this. We are building about 35 km (22 miles) from Untertürkheim. Contracting is done individually with the architect. In our new development area (11 building plots), 3 are building with a general contractor and 4 with an architect. All seven are building with Poroton, most with MZ70 from Bellenberg (2 prefab houses and 2 undecided).
This is not representative, but we requested quotes for both aerated concrete and Poroton, and the result was that Poroton, with a thermal insulation value one level better, was even slightly cheaper.
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