Actual savings between joists in wood vs concrete?

[plan-g]

Adding a 75m2 extension with a basement underneath. I'm torn between using a wooden floor structure or casting in concrete.

Is the actual saving particularly significant when using a wooden floor structure with blown-in loose-fill insulation?
Later on, you'll need to use the expensive grooved particle boards for underfloor heating pipes and more.

Concrete floor structure costs SEK 190,000 incl. VAT but I find it harder to estimate the total cost of the wooden floor structure.

 

[klaskarlsson]

Building an extension of 75m2 with a basement underneath. I'm deciding between a wooden floor structure or one cast in concrete.

Is the actual savings significant when using wooden floor structure with blown loose-fill insulation?
Then you would have to later use the expensive grooved chipboards for underfloor heating pipes and more.

Concrete floor structure costs 190,000 SEK incl. VAT but I find it harder to estimate the total cost of the wooden floor structure.

Difficult to answer in general; wood is usually cheaper.
But what is included in the 190k SEK for concrete? Is it insulated and finished?

And if you then embed the heating coils - you should also account for self-leveling compound/embedding.

 

[plan-g]

Difficult to answer generally, usually wood is cheaper.
But what does the 190k for concrete include? Is it insulated and finished?

And if you're casting in the heating coils, you'll need to consider self-leveling compound/embedding as well

Insulated? The basement will be warm as it is built on an insulated slab with underfloor heating and insulated walls. So, you don't need to insulate the intermediate floor, right? It's the casting itself that's 190k.

Good point regarding the self-leveling/embedding.

 

[klaskarlsson]

Insulated? The basement will be warm as it is built on an insulated slab with underfloor heating and insulated walls. So you don't need to insulate the intermediate floor, right? It's the casting itself that costs 190k.

Good point about self-leveling compound/casting.

Yes, of course, but you wrote "intermediate floor with blown loose-fill." I.e., insulation - but was it perhaps for sound?