King_Bruno
2022-12-20 12:06:35
- #1
Dear all,
we recently purchased an old building (built in 1907) and are now wondering how to deal with the insulation of the roof.
Condition: According to the expert, structural engineer, and architect, the roof covering is fine. The roof is supported by quite narrow (approx. 14 cm) rafters. Between the rafters in the attic, there is old insulation (glass wool?) which is partially damaged. In the top floor, which partly has sloping ceilings, there is probably a (thin) insulation under the plaster (sketch attached).
First of all: The most sensible thing would of course be a complete renovation of the roof, but we have to postpone this project into the future. The effort estimated by the architect (new roof structure, a crane will be needed, etc.) is currently not feasible. According to local legislation (Belgium), the entire roof would have to be brought up to the latest standard whenever any work is done on it, so a "partial renovation" is not possible.
The question now is what we should do in the time until the roof is renovated. Should we simply continue heating through the roof, or is there a way to improve the energy efficiency somewhat?
The part marked in red is the attic with the exposed, partially damaged insulation. Is it worth replacing this? Or does that not make sense because the blue part (top floor) cannot be easily "repaired"?
It would also be easy to insulate the attic floor (marked in yellow) – but then the problem with the blue areas (top floor) would persist.
Would insulating the penultimate floor ceiling (marked in green) perhaps be a solution? However, this is open upwards through the stairwell.
We are very grateful for any helpful suggestions!
Best regards Bruno König
we recently purchased an old building (built in 1907) and are now wondering how to deal with the insulation of the roof.
Condition: According to the expert, structural engineer, and architect, the roof covering is fine. The roof is supported by quite narrow (approx. 14 cm) rafters. Between the rafters in the attic, there is old insulation (glass wool?) which is partially damaged. In the top floor, which partly has sloping ceilings, there is probably a (thin) insulation under the plaster (sketch attached).
First of all: The most sensible thing would of course be a complete renovation of the roof, but we have to postpone this project into the future. The effort estimated by the architect (new roof structure, a crane will be needed, etc.) is currently not feasible. According to local legislation (Belgium), the entire roof would have to be brought up to the latest standard whenever any work is done on it, so a "partial renovation" is not possible.
The question now is what we should do in the time until the roof is renovated. Should we simply continue heating through the roof, or is there a way to improve the energy efficiency somewhat?
The part marked in red is the attic with the exposed, partially damaged insulation. Is it worth replacing this? Or does that not make sense because the blue part (top floor) cannot be easily "repaired"?
It would also be easy to insulate the attic floor (marked in yellow) – but then the problem with the blue areas (top floor) would persist.
Would insulating the penultimate floor ceiling (marked in green) perhaps be a solution? However, this is open upwards through the stairwell.
We are very grateful for any helpful suggestions!
Best regards Bruno König