ᐅ Aerated Concrete / Brick / Monolithic Construction – Who Has Experience?
Created on: 11 Sep 2017 20:23
H
Häuslebauer24
Hello everyone,
We have a very nice plot of land in mind. It is tied to a specific developer. The house is planned to be built using solid construction (monolithic method).
We are not construction experts, and none of us have any professional or personal experience with building. Over the past while, we have tried to gather as much information as possible, compared developers (both prefabricated and solid construction), studied and compared technical specifications, and so on... so far, no provider offered solid construction as an option, so this is our first time dealing with it. According to Google, it largely depends on the bricks and the wall thickness. From the project manager, we only know so far that the thickness should be 36.6 cm (14.4 inches), but we do not yet know which type of bricks they are using (we will ask).
What is your general opinion on solid construction? There is so much discussion about insulation that the idea initially felt a bit strange... It is said that no ventilation system would be needed because of this... The house is supposed to meet KFW 55 standards.
By the way, the plot is located near a forest, in case that matters.
What should we pay attention to?
Thank you!
We have a very nice plot of land in mind. It is tied to a specific developer. The house is planned to be built using solid construction (monolithic method).
We are not construction experts, and none of us have any professional or personal experience with building. Over the past while, we have tried to gather as much information as possible, compared developers (both prefabricated and solid construction), studied and compared technical specifications, and so on... so far, no provider offered solid construction as an option, so this is our first time dealing with it. According to Google, it largely depends on the bricks and the wall thickness. From the project manager, we only know so far that the thickness should be 36.6 cm (14.4 inches), but we do not yet know which type of bricks they are using (we will ask).
What is your general opinion on solid construction? There is so much discussion about insulation that the idea initially felt a bit strange... It is said that no ventilation system would be needed because of this... The house is supposed to meet KFW 55 standards.
By the way, the plot is located near a forest, in case that matters.
What should we pay attention to?
Thank you!
C
Christian NW5 Dec 2017 15:51Thank you for your reply.
How do you perceive the noise coming through the system from outside, such as from the street? (Starting cars, conversations, playing children…)
May I ask what your final energy demand is in kWh/(m²·a) for heating and hot water? Even though this can’t be easily applied to other houses...
Nutshell schrieb:
The decentralized Lunos E2 with heat recovery is quite nice, but I would be more convinced if a unit didn’t make banging noises during operation (this started after 2 years).
How do you perceive the noise coming through the system from outside, such as from the street? (Starting cars, conversations, playing children…)
Nutshell schrieb:
In 2013/2014, we built a monolithic KfW55 house with 36.5 cm (14.4 inches) aerated concrete at a 0.08 lambda value.
May I ask what your final energy demand is in kWh/(m²·a) for heating and hot water? Even though this can’t be easily applied to other houses...
We live at an altitude of just under 300m (about 980 ft).
The house has a rather simple shape.
A standard pitched roof without dormers or skylights (upstairs, one window per room on the gable side).
Styrofoam was not an option for various reasons, so we chose the more expensive monolithic plan blocks with a Lambda value of 0.08 W/m·K.
Size: 111 sqm (1,195 sq ft) living area.
Exterior wall: 36.5 cm (14 inches) Ytong blocks // Lambda 0.21 W/m²K
Floor slab insulated with XPS // 0.21 W/m²K
Ceiling upstairs sloped with 24 cm (9.5 inches) // ceiling insulated with 34 cm (13 inches) mineral wool // 0.12 W/m²K
Doors and windows are triple-glazed and gas-filled // overall including frame 1.05 W/m²K
Heat generator:
Gas condensing boiler: Viessmann Vitodens 300
System control: Vitotronic 200
Solar panels 5 sqm (54 sq ft): Vitosol 200-F
Solar storage tank: Vitocell 100-W, 300 liters (79 gallons)
The solar system is only for domestic hot water (no heating support).
Our gas boiler is turned off for heating from May to September and consumes about 100 kWh during the summer.
In winter, the solar system can hardly heat the water enough for two people, so it mostly runs on gas.
Ventilation is via decentralized Lunos e² units with 90% heat recovery efficiency.
Energy consumption (heating + hot water)
First year (Oct 19, 2014 – Oct 19, 2015): 9,900 kWh gas
Second year (Oct 19, 2015 – Oct 23, 2016): 7,730 kWh gas
Third year (Oct 23, 2016 – May 9, 2017): 7,282 kWh gas. So it stabilizes at about 8,100 kWh.
This currently equals roughly €31 in heating costs for the entire house.
We set the temperature to 23°C (73°F) throughout the house.
Overall, we are very satisfied. Of course, the energy certificate shows a lower consumption than we actually have, but it also assumes temperatures below 20°C (68°F)...!
There is no night setback, and nothing else ever switches off or reduces output.
The Lunos units do impact the perception of voices / noise / squealing being more noticeable.
I plan to close the one vent with the broken unit soon with a cut piece of EPS; the other units will remain. Replacing the unit is too expensive for me, and I usually ventilate this room well after use anyway.
The house has a rather simple shape.
A standard pitched roof without dormers or skylights (upstairs, one window per room on the gable side).
Styrofoam was not an option for various reasons, so we chose the more expensive monolithic plan blocks with a Lambda value of 0.08 W/m·K.
Size: 111 sqm (1,195 sq ft) living area.
Exterior wall: 36.5 cm (14 inches) Ytong blocks // Lambda 0.21 W/m²K
Floor slab insulated with XPS // 0.21 W/m²K
Ceiling upstairs sloped with 24 cm (9.5 inches) // ceiling insulated with 34 cm (13 inches) mineral wool // 0.12 W/m²K
Doors and windows are triple-glazed and gas-filled // overall including frame 1.05 W/m²K
Heat generator:
Gas condensing boiler: Viessmann Vitodens 300
System control: Vitotronic 200
Solar panels 5 sqm (54 sq ft): Vitosol 200-F
Solar storage tank: Vitocell 100-W, 300 liters (79 gallons)
The solar system is only for domestic hot water (no heating support).
Our gas boiler is turned off for heating from May to September and consumes about 100 kWh during the summer.
In winter, the solar system can hardly heat the water enough for two people, so it mostly runs on gas.
Ventilation is via decentralized Lunos e² units with 90% heat recovery efficiency.
Energy consumption (heating + hot water)
First year (Oct 19, 2014 – Oct 19, 2015): 9,900 kWh gas
Second year (Oct 19, 2015 – Oct 23, 2016): 7,730 kWh gas
Third year (Oct 23, 2016 – May 9, 2017): 7,282 kWh gas. So it stabilizes at about 8,100 kWh.
This currently equals roughly €31 in heating costs for the entire house.
We set the temperature to 23°C (73°F) throughout the house.
Overall, we are very satisfied. Of course, the energy certificate shows a lower consumption than we actually have, but it also assumes temperatures below 20°C (68°F)...!
There is no night setback, and nothing else ever switches off or reduces output.
The Lunos units do impact the perception of voices / noise / squealing being more noticeable.
I plan to close the one vent with the broken unit soon with a cut piece of EPS; the other units will remain. Replacing the unit is too expensive for me, and I usually ventilate this room well after use anyway.
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