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larrylurex6 Jan 2019 14:41Hello,
Last year, we bought an older house. One part of the house had already undergone a full renovation about 10 years ago. The rest of the house still needs to be refurbished. At first, we renovated the area that had already been refurbished.
Now we are faced with the huge task of renovating the remaining part of the building. Currently, this part is completely separated from the area where we currently live. The plan is to combine them by creating an opening. I hope this is clear so far.
I want to start with the attic. The attic is accessible but cannot currently be used as living space. The boards on the attic floor are brittle and should now be replaced with 22mm OSB boards (7/8 inch).
I have already started removing the boards. Beneath them was a layer of glass wool insulation. However, there is no vapor barrier installed under the glass wool. Between the wooden joists under the glass wool, there is a layer of small boards, and underneath those are wood-cement fiberboards.
In the part of the building that still needs renovation, I will be renewing the ceilings anyway and installing new insulation wool with a vapor retarder.
But what should I do about the area that is already inhabited? This affects a children's room, a laundry room, and part of the hallway.
To do it properly, I would basically have to redo all the ceilings completely. Are there any other options?
Last year, we bought an older house. One part of the house had already undergone a full renovation about 10 years ago. The rest of the house still needs to be refurbished. At first, we renovated the area that had already been refurbished.
Now we are faced with the huge task of renovating the remaining part of the building. Currently, this part is completely separated from the area where we currently live. The plan is to combine them by creating an opening. I hope this is clear so far.
I want to start with the attic. The attic is accessible but cannot currently be used as living space. The boards on the attic floor are brittle and should now be replaced with 22mm OSB boards (7/8 inch).
I have already started removing the boards. Beneath them was a layer of glass wool insulation. However, there is no vapor barrier installed under the glass wool. Between the wooden joists under the glass wool, there is a layer of small boards, and underneath those are wood-cement fiberboards.
In the part of the building that still needs renovation, I will be renewing the ceilings anyway and installing new insulation wool with a vapor retarder.
But what should I do about the area that is already inhabited? This affects a children's room, a laundry room, and part of the hallway.
To do it properly, I would basically have to redo all the ceilings completely. Are there any other options?
Are you worried now because there is no vapor barrier?
What is your actual goal? To replace the insulation because the old one is not good? Is there cold air coming down from the ceiling, or what exactly is the problem?
If it’s only about the flooring in the unheated roof space, the simplest solution would be to use tongue-and-groove boards instead of OSB.
Unlike OSB, these are vapor-permeable, so you could leave the insulation as it is for now.
However, if you want to completely redo everything and insulate it to a 'modern' standard, then yes, you would need to replace all the ceilings.
What is your actual goal? To replace the insulation because the old one is not good? Is there cold air coming down from the ceiling, or what exactly is the problem?
If it’s only about the flooring in the unheated roof space, the simplest solution would be to use tongue-and-groove boards instead of OSB.
Unlike OSB, these are vapor-permeable, so you could leave the insulation as it is for now.
However, if you want to completely redo everything and insulate it to a 'modern' standard, then yes, you would need to replace all the ceilings.
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