Hello,
I am currently developing a room on the 1st floor in a stone house which will include a bedroom and a bathroom.
Currently there is an air inlet in each room (the doorframes each have a ventilation and the bathroom on the ground floor has a grid on the wall).
My question is: do I need to install a VMC?
Knowing that upstairs there are also two 10m² bedrooms (including ours, in which some traces of humidity appear at the bottom of the window, but which in the near future will only be one bedroom. 'friends).
Finally the roofer installed there are ventilation grilles for the attic space that I isolated with a thickness of 60 + 200mm.
Thank you in advance for your advice.
VMC optional or mandatory?
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- I understand econologic
- posts: 116
- Registration: 28/01/08, 05:41
- Location: twelve o'clock Pyrenees
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Re: VMC optional or compulsory?
hello, We should not put new double glazed windows if we do not want to install a CMV.
These frames are so watertight that they create disorders in a house which did not have one, and the condensation which could be put on the single glazed windows sometimes, because it was the coldest part, with the double glazing which are not as cold, the condensation will be on the coldest parts of the wall, this is what you notice.
Already, you would have to insulate the walls before changing the windows, but you can do it afterwards, and you have to install a CMV, with a suction mouth in the kitchen, one in the bathroom and one in the WC. Air is ONLY required on the windows of so-called dry rooms: bedroom, and one in the living room, the furthest from the door of the room or from the suction mouth if American kitchen. Windows on so-called damp rooms should not be ventilated since they have a suction opening.
There must be a passage under ALL interior doors of approximately 12 to 15 mm, except for those descending to the cellar or the garage.
For the bathroom, the low ventilation which comes from outside becomes useless idem for the high ventilation since the VMC will ensure the renewal with the air which passes under the door.
These frames are so watertight that they create disorders in a house which did not have one, and the condensation which could be put on the single glazed windows sometimes, because it was the coldest part, with the double glazing which are not as cold, the condensation will be on the coldest parts of the wall, this is what you notice.
Already, you would have to insulate the walls before changing the windows, but you can do it afterwards, and you have to install a CMV, with a suction mouth in the kitchen, one in the bathroom and one in the WC. Air is ONLY required on the windows of so-called dry rooms: bedroom, and one in the living room, the furthest from the door of the room or from the suction mouth if American kitchen. Windows on so-called damp rooms should not be ventilated since they have a suction opening.
There must be a passage under ALL interior doors of approximately 12 to 15 mm, except for those descending to the cellar or the garage.
For the bathroom, the low ventilation which comes from outside becomes useless idem for the high ventilation since the VMC will ensure the renewal with the air which passes under the door.
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