We want to hire professionals to replace the windows for our Houston home built in 1950. The old windows are made of steel (not even aluminum per the remodel contractor) and have been paint-shut. The operators for these casement windows are not visible (not on the sill) or have been removed. The lattice screens attached to the soffit outside of the windows need to be removed during the installation.

We are wondering if we should hire a window companies or a remodel contractor given the age of the house and the possible problems during/after installation of the new vinyl windows. Any suggestion will be appreciated!