After the 2009 must ENEV top floor ceiling to non-upgraded roof spaces to 31 December 2011 a U-value of 0.24 W / m² K can be insulated.
older buildings usually have wooden beams with U-values of about 1.25 to 2.10 W / m² K, with newer buildings with concrete floors, the U-values are around 0.80 to 1.00 W / m² K. This will be required after each 10-16 cm floor ceiling insulation. It is also permissible to insulate the roof area as an alternative, but this is technically much more complex (and therefore more expensive), and should only come into question if something is present on the roof anyway.
remains to decide how comfortable the insulation is installed (loose, partially or fully accessible).
We will accommodate all affected owners Communities the relevant agenda item and decide on the desired extent.
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