ᐅ How can you bypass energy-saving regulations and avoid bureaucratic hassle?
Created on: 8 Jul 2017 19:26
F
Farilo
Hello everyone,
Is it possible to build without following the energy saving regulations?
I want to avoid unnecessary insulation and similar measures. At the same time, I want to maintain the great indoor climate that exists in this building from 1959.
Although it was barely insulated, the house remains completely dry and the indoor climate is excellent.
I am planning to build an extension that fits this outstanding indoor climate. All these modern insulation methods are not helpful in this case.
Does anyone have some kind of exemption from the energy saving regulation and can share how they obtained it?
Thanks in advance.
Best regards
Is it possible to build without following the energy saving regulations?
I want to avoid unnecessary insulation and similar measures. At the same time, I want to maintain the great indoor climate that exists in this building from 1959.
Although it was barely insulated, the house remains completely dry and the indoor climate is excellent.
I am planning to build an extension that fits this outstanding indoor climate. All these modern insulation methods are not helpful in this case.
Does anyone have some kind of exemption from the energy saving regulation and can share how they obtained it?
Thanks in advance.
Best regards
Peanuts74 schrieb:
The exterior surface of the wall should always be cold during winter.
Using a thermal imaging camera, you can rather easily spot thermal bridges. For example, in Ytong (aerated concrete) walls, you can see the intermediate floors even if the edges are insulated, because the concrete (which is not insulating) rests on them, and the house is not fully "wrapped" in insulation like it is with calcium silicate blocks combined with polystyrene. Hi Peanuts74,
are you referring to an exterior wall with or without significant insulation? Or just in general?
Lumpi_LE schrieb:
Why do you say that?
Place a pot with warm water outside in the garden once in the morning and once in the evening, and touch the exterior wall. It definitely won’t be cooler at night than during the day... Well, I was referring to the assumption that a natural stone, for example, absorbs heat or cold (unlike an insulated wall) and then has to release it accordingly.
Or is that completely wrong as well? I thought we had already clarified this.
If I put a pot of water outside in summer at 35°C (95°F), the water cools down more slowly than if I place the same pot outside in winter at, say, 5°C (41°F).
The pot’s surface temperature will adjust accordingly, too...
At the moment, I don’t really understand this comparison.
Putting all the considerations about thermal imaging cameras aside:
Whenever there is a temperature difference (in Kelvin) between the inside and outside of a building component (wall/door/window/etc.), energy exchange occurs.
This energy exchange—in our case, heat loss during winter—can be easily calculated:
Heat loss H = A × Delta Temp × U-value of the component
A = Area; for a wall 3m wide by 2.5m high, this is 7.5m² (81ft²)
Delta Temp = 30 Kelvin with an indoor temperature of 20°C (68°F) and an outdoor temperature of -10°C (14°F)
U-value of the component:
Old U-value = wall from an older building ~ 1.00 W/m²·K (can be somewhat higher or lower)
New U-value = wall from a new building ~ 0.20 W/m²·K
Now, the heat loss can be easily calculated:
Old wall:
H = 7.5m² × 30K × 1.00 W/m²·K = 225 watts
To compensate for the heat loss of this one wall, meaning to prevent the room from cooling down, you need to supply heat at a rate of 225 watts.
New wall:
H = 7.5m² × 30K × 0.20 W/m²·K = 45 watts
In a new building, to avoid cooling, only one fifth of the energy input from the previous example is required.
That’s the bottom line regarding the idea that insulation might not be worth it.
The best part:
If you don’t want an external thermal insulation composite system, use a monolithic (single-material) masonry instead.
For example, we use a Poroton T8 brick.
At 36.5cm (14 inches) thickness (this is the most common construction method in Bavaria), it has a U-value of 0.21 W/m²·K.
The example above is by no means made up or some kind of magic.
Anything other than this simple fact—that an energy balance ALWAYS takes place—only confuses you and is irrelevant here.
Whenever there is a temperature difference (in Kelvin) between the inside and outside of a building component (wall/door/window/etc.), energy exchange occurs.
This energy exchange—in our case, heat loss during winter—can be easily calculated:
Heat loss H = A × Delta Temp × U-value of the component
A = Area; for a wall 3m wide by 2.5m high, this is 7.5m² (81ft²)
Delta Temp = 30 Kelvin with an indoor temperature of 20°C (68°F) and an outdoor temperature of -10°C (14°F)
U-value of the component:
Old U-value = wall from an older building ~ 1.00 W/m²·K (can be somewhat higher or lower)
New U-value = wall from a new building ~ 0.20 W/m²·K
Now, the heat loss can be easily calculated:
Old wall:
H = 7.5m² × 30K × 1.00 W/m²·K = 225 watts
To compensate for the heat loss of this one wall, meaning to prevent the room from cooling down, you need to supply heat at a rate of 225 watts.
New wall:
H = 7.5m² × 30K × 0.20 W/m²·K = 45 watts
In a new building, to avoid cooling, only one fifth of the energy input from the previous example is required.
That’s the bottom line regarding the idea that insulation might not be worth it.
The best part:
If you don’t want an external thermal insulation composite system, use a monolithic (single-material) masonry instead.
For example, we use a Poroton T8 brick.
At 36.5cm (14 inches) thickness (this is the most common construction method in Bavaria), it has a U-value of 0.21 W/m²·K.
The example above is by no means made up or some kind of magic.
Anything other than this simple fact—that an energy balance ALWAYS takes place—only confuses you and is irrelevant here.
Just to quickly clarify the basic conditions so that we don’t talk past each other.
Assumption:
Uninsulated / natural stone – 6:00 AM – exterior wall → cold
Insulated – 6:00 AM – exterior wall → condition???
------
Uninsulated / natural stone – 8:00 PM – exterior wall → warm
Insulated – 8:00 PM – exterior wall → condition???
Assumption:
Uninsulated / natural stone – 6:00 AM – exterior wall → cold
Insulated – 6:00 AM – exterior wall → condition???
------
Uninsulated / natural stone – 8:00 PM – exterior wall → warm
Insulated – 8:00 PM – exterior wall → condition???
What exactly do you mean by a natural stone?
Are you referring to "quarried from the mountain," like solid rock, or something else?
For example, is a sand-lime brick considered a natural stone (it does occur naturally but those used for construction are manufactured)? Or do you mean bricks, such as fired clay bricks?
Are you referring to "quarried from the mountain," like solid rock, or something else?
For example, is a sand-lime brick considered a natural stone (it does occur naturally but those used for construction are manufactured)? Or do you mean bricks, such as fired clay bricks?
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