ᐅ Semi-detached house from 2010 – Built to KfW 40 energy standard without a ventilation system
Created on: 31 Jan 2016 18:36
T
Tego12
Hello!
In addition to our new construction plans, there is currently a semi-detached house for sale that is very interesting to us. It’s 150 sqm (1,615 sq ft), 5 years old, KfW 40 standard, with generally very good features (extra-large tiles and high-quality parquet flooring, garage with sectional door, high-end bathrooms, etc.), but without a ventilation system (for whatever reason...).
Now my question: KfW 40 without a ventilation system... should I expect any issues? Would it be advisable to retrofit a decentralized system, or is it likely possible to live comfortably without significant ventilation effort?
As an additional note: currently, it is heated exclusively with wood (a water-bearing fireplace connected to underfloor heating), but either a gas boiler or an air source heat pump will be installed soon (both roughly the same price). The wall construction consists of 17.5 cm (7 inches) brick plus 20 cm (8 inches) external thermal insulation composite system (ETICS). The reason I mention this is that I assume the KfW 40 standard is mainly achieved through the wood heating, but I lack the knowledge to assess this definitively.
Many thanks in advance for your answers!
In addition to our new construction plans, there is currently a semi-detached house for sale that is very interesting to us. It’s 150 sqm (1,615 sq ft), 5 years old, KfW 40 standard, with generally very good features (extra-large tiles and high-quality parquet flooring, garage with sectional door, high-end bathrooms, etc.), but without a ventilation system (for whatever reason...).
Now my question: KfW 40 without a ventilation system... should I expect any issues? Would it be advisable to retrofit a decentralized system, or is it likely possible to live comfortably without significant ventilation effort?
As an additional note: currently, it is heated exclusively with wood (a water-bearing fireplace connected to underfloor heating), but either a gas boiler or an air source heat pump will be installed soon (both roughly the same price). The wall construction consists of 17.5 cm (7 inches) brick plus 20 cm (8 inches) external thermal insulation composite system (ETICS). The reason I mention this is that I assume the KfW 40 standard is mainly achieved through the wood heating, but I lack the knowledge to assess this definitively.
Many thanks in advance for your answers!
B
Bauexperte1 Feb 2016 00:22Tego12 schrieb:
Now my question: KFW40 without a ventilation system... should I expect problems with that?As 'lastdrop' correctly answered, after 5 years there are no problems anymore ... unless issues existed and were not addressed.Tego12 schrieb:
What seems strange to me: Apparently there is no building specification, nor a zoning plan. Can it really be that there is no building specification for a house from 2010? At least for the building permit/planning permission, it should be mandatory, and nobody just throws that away, right? Am I right to be skeptical?There is either a zoning plan or at that time section 34 applied. A building specification document is not necessarily required; alternatively, detailed tender documents plus construction documentation via an architect in individual trade contracts or a notarized purchase agreement through the construction company.Whatever you decide, do so _without_ being too influenced by the attractive price. Find an expert specializing in existing buildings and inspect the property with them. Only after their evaluation should you make a decision.
Regards, Bauexperte
Bauexperte schrieb:
A building appraisal (BB) is not necessarily required; alternatively, detailed tender documents plus documentation during construction through the architect in separate trade contracts or a notarized contract when purchasing via a building company (BT).Maybe the customers were also naive and really bought a pig in a poke? Bought as seen or something like that
EveundGerd1 Feb 2016 10:22I agree with Bauexperte: Without the expertise of a qualified assessor, I would not buy this house.
You should invest that money in any existing property!
You should invest that money in any existing property!
Thank you for the answers!
Not having a ventilation system is not a deal-breaker for me, so we will now be discussing details more concretely with the seller. My next questions are more on the legal side, which is why I started a new thread in the appropriate forum.
https://www.hausbau-forum.de/threads/Gestaltung-Kaufvertrag-bei-zugesagten-umbauten-seitens-Verkäufer.14629/
The expert will, of course, be consulted before signing for sure.
Best regards
Not having a ventilation system is not a deal-breaker for me, so we will now be discussing details more concretely with the seller. My next questions are more on the legal side, which is why I started a new thread in the appropriate forum.
https://www.hausbau-forum.de/threads/Gestaltung-Kaufvertrag-bei-zugesagten-umbauten-seitens-Verkäufer.14629/
The expert will, of course, be consulted before signing for sure.
Best regards