rLz4u
2018-05-04 06:50:02
- #1
Good morning dear community,
I have the following concern and would be extremely grateful if someone could help me with their expert knowledge.
As can be seen in the pictures, I am currently planning the insulation of our intermediate ceiling. Previously, the roof was normally lined with laminated aluminum foil and insulation from the 80s. Everything was just stapled, nothing glued, no vapor barrier, etc. That stuff eventually fell down or was destroyed by a marten.
We recently bought the house, built in 82.
Since we only have roofing felt on the tiles and no Delta-Max foil, I have decided to insulate from the floor due to the moisture – according to the Energy Saving Ordinance 2016, that is required anyway, right?
The roof will not be used as living space; it is too small anyway. So the air can circulate freely.
Well, thus I have now installed the following materials: (from top to bottom)
Insulation fleece 180 (Climowool KF2)
Vapor barrier (Climowool DB Flex)
Rafters (doubled to 200-220 mm)
Sheathing boards (30 mm, staggered under the rafters)
30 mm Styrofoam under the rafters and between the sheathing boards, so the air does not circulate “in case” there is a system error!
Gypsum boards (as ceiling)
I have properly installed, glued, and attached the vapor barrier between the rafters and to the exterior wall (after prior filling). On the sides, I have extended the vapor barrier as far as possible to the roof slope. Picture follows!
NOW I have a concern: what do I do with the transition between the roof slope and the floor? Theoretically, two materials and temperatures meet here.
In the slope, I have the old (approx. 100-120 mm thick) insulation wool with the inner aluminum foil, where the air flows above due to the roof tiles, and above that the 180 insulation with vapor barrier.
Can moisture form in that corner? I don’t have a 100% transition between the aluminum foil and the vapor barrier, and two temperatures possibly meet there, right? Possibly +20 degrees from the corner in the ceiling and -10 from the roof structure. Or should I glue the vapor barrier ON the aluminum foil?
Maybe someone can help me, thanks in advance :))
I have the following concern and would be extremely grateful if someone could help me with their expert knowledge.
As can be seen in the pictures, I am currently planning the insulation of our intermediate ceiling. Previously, the roof was normally lined with laminated aluminum foil and insulation from the 80s. Everything was just stapled, nothing glued, no vapor barrier, etc. That stuff eventually fell down or was destroyed by a marten.
We recently bought the house, built in 82.
Since we only have roofing felt on the tiles and no Delta-Max foil, I have decided to insulate from the floor due to the moisture – according to the Energy Saving Ordinance 2016, that is required anyway, right?
The roof will not be used as living space; it is too small anyway. So the air can circulate freely.
Well, thus I have now installed the following materials: (from top to bottom)
Insulation fleece 180 (Climowool KF2)
Vapor barrier (Climowool DB Flex)
Rafters (doubled to 200-220 mm)
Sheathing boards (30 mm, staggered under the rafters)
30 mm Styrofoam under the rafters and between the sheathing boards, so the air does not circulate “in case” there is a system error!
Gypsum boards (as ceiling)
I have properly installed, glued, and attached the vapor barrier between the rafters and to the exterior wall (after prior filling). On the sides, I have extended the vapor barrier as far as possible to the roof slope. Picture follows!
NOW I have a concern: what do I do with the transition between the roof slope and the floor? Theoretically, two materials and temperatures meet here.
In the slope, I have the old (approx. 100-120 mm thick) insulation wool with the inner aluminum foil, where the air flows above due to the roof tiles, and above that the 180 insulation with vapor barrier.
Can moisture form in that corner? I don’t have a 100% transition between the aluminum foil and the vapor barrier, and two temperatures possibly meet there, right? Possibly +20 degrees from the corner in the ceiling and -10 from the roof structure. Or should I glue the vapor barrier ON the aluminum foil?
Maybe someone can help me, thanks in advance :))