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Träumerle24 Oct 2020 22:26Hello,
we are renovating and currently preparing work for the electrician. Among other things, we have removed the old wooden ceilings. In the rooms, there was an additional suspended ceiling (drywall) underneath, which looks "clean" from the outside (see photo). From the attic, it also looks clean externally; about 18cm (7 inches) of insulation wool and walkable floorboards above – the entire roof is in good condition, having been renovated in the mid-1990s. BUT today, underneath the floorboards, what you see in the two photos below was revealed.
To explain why it looks different in the floorboards and the rooms: the floorboard ceiling was installed when the house was built in 1966 and was, by the way, very solid, thick, and heavy. The wooden ceilings in the rooms came later and were significantly lighter and thinner.
What is the best approach now? Spot repairs from below in the floorboards? Or should everything be accessed from above? It is to be assumed that the space between the room ceilings and the attic might look similar. Please also consider the costs when giving advice... Grateful regards!

we are renovating and currently preparing work for the electrician. Among other things, we have removed the old wooden ceilings. In the rooms, there was an additional suspended ceiling (drywall) underneath, which looks "clean" from the outside (see photo). From the attic, it also looks clean externally; about 18cm (7 inches) of insulation wool and walkable floorboards above – the entire roof is in good condition, having been renovated in the mid-1990s. BUT today, underneath the floorboards, what you see in the two photos below was revealed.
To explain why it looks different in the floorboards and the rooms: the floorboard ceiling was installed when the house was built in 1966 and was, by the way, very solid, thick, and heavy. The wooden ceilings in the rooms came later and were significantly lighter and thinner.
What is the best approach now? Spot repairs from below in the floorboards? Or should everything be accessed from above? It is to be assumed that the space between the room ceilings and the attic might look similar. Please also consider the costs when giving advice... Grateful regards!
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Träumerle25 Oct 2020 10:07T
Träumerle25 Oct 2020 12:05It just looks discolored, but I don’t know how that happened.
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Träumerle25 Oct 2020 12:37I am worried about mold?
Träumerle schrieb:
I fear mold?quite possibleSimilar topics