I have now made a mould of the roof piece. When making the roof mould I by accident placed the master on a uneven surface which gives me problems when making the cast, the resin tends to gather in one of the corners. The roof piece that comes out of that is harder to fit together with the house. It is easy to place the mould so it is plain when casting, but still it is quite irretating.
The following pictures are showing the house with added details, ready to get painted.
…and here after the primer: