The porch of our home has been made part of the interior. We now need to raise the floor to meet the level of the existing floor internally.
The total height of the step is 5cm. So the floor needs to be raised 5cm.
I am not sure if the floor needs to be screeded. The carpenter says he can lay some celotex thermal insulation and then pack it out. He says if we do this, he can install the new wooden floor straight away.
The other option is that we have to wait for the floor to be screeded, and wait for the screed to dry. That means we have to wait 1 - 2 months for the new wood floor can be fitted.
Should I just wait longer and wait for a plasterer to screed the floor, or is the carpenter's suggestion is an acceptable solution? I am particularly worried about damp.