Cost flat roof vs. pitched roof, exact details required

Here I also quote from a question of mine from another thread, which may have been somewhat overlooked:

What costs more – a pitched roof with a classic roof truss (not a binder roof truss) and tiles, or a flat roof that is additionally converted into a terrace?

I don’t need a detailed answer here (which isn’t possible anyway without basic information) – I’m interested in a tendency (so I can possibly take it into account in future planning).

Thank you very much for your answer.
f-pNo

Definitely flat roof. The sealing costs there.

Hello,

What costs more - a gable roof with a classic roof truss (no binder roof truss) and tiles, or a flat roof that is also converted into a terrace?

I don’t need a detailed breakdown here (which is not possible anyway without basic information) - I’m interested in a general tendency (so I can consider it in future planning if necessary).

Definitely the flat roof option. Initially due to the more complex waterproofing and furthermore the fact that the roof is intended to be walkable. However, from my point of view, the latter only seems economically reasonable if it is a two-family house and the second resident or possibly tenant has no garden access.

In a classic single-family house, it has been shown that a terrace on the first floor is used little to not at all, since there is sufficient terrace and garden space at ground level. It is comparable to the topic of a party room in the basement. That room is used a maximum of 1-2 times, then the housewife/househusband drives the guests out to the terrace

Rhenish regards

Hello Der Da,

I know other cellars that are like caves. You go in when it’s light and come out when it’s light again. So it really depends on the owner You don't leave a nice bar counter just for a terrace

Exceptions always prove the rule

Rhenish greetings

@all Thank you very much for the feedback. This rules out a flat roof option. It could have been that the removal of the roof truss + tiles might offset the costs of sealing or even result in savings. Well - I'm not a fan of flat roofs anyway and now I have another argument against them.

Apart from the costs, what I like better about the flat roof variant is that on the 1st floor there are no spatial restrictions caused by the sloping roof. Fully usable rooms, better options for arranging furniture.... I find a second full story much more pleasant....