ᐅ Converting an attic into living space – insulation

Hello,

I have purchased an older house (built in 1984) and am currently renovating it. The attic is being converted into living space and will be insulated.

The current roof structure is:
- Roof tiles
- Roofing felt
- Profiled wood boards
- Rafters (16cm) (6.3 inches)

My plan is to use Isover ZKF 1-032 insulation, 16 cm (6.3 inches) thick, fitted between the rafters, then install a vapor retarder, followed by counter battens to fix the drywall panels.

Is this approach feasible?

It is a bungalow with a hipped roof (45°) and roughly 180 m² (1,938 sq ft) of roof area.
No work will be done on the exterior of the roof except for new roof windows.

I am open to any ideas or suggestions.

Thank you

Celo318 schrieb:

I am open to ideas and suggestions.

Calculate everything using ubakus for yourself.

nordanney schrieb:

Calculate everything in ubakus.

What do the values tell me?
For example, the wood moisture is shown in red, at 4.7%.
Drying time is 27 days.

Celo318 schrieb:

What do these values tell me?
For example, wood moisture is shown in red, 4.7%.
Drying time 27 days

Please upload a picture of the calculation. Red for wood moisture simply means your wood is damp ==> mold warning

nordanney schrieb:

Try posting a picture of the calculation. Red in the wood moisture means simply that your wood is getting damp ==> mold warning

I have changed the vapor retarder, which corrected the values in a positive way

Celo318 schrieb:

I changed the vapor retarder film, which improved the values positively.

Nevertheless, you have to assume that moisture will accumulate on the outside with this construction, and eventually it will start to rot...