I did this year's ago for a friend. Mid terraced house about a hundred years old with an office room in the loft and the router in the kitchen. We looked at all sorts of routes, rear elevation then in through the eaves was the initial favourite.
Running s temporary cable through the stairwells to check whether enough bandwidth was available, the temporary solution became permanent as carpets were lifted and cabling clipped into place over the skirting. That was thirteen years ago.
Last week he comes onto the phone asking my advice as the Internet in the loft had fallen off a cliff. We discussed all sorts of hardware solutions, he is not particularly techie and I have been doing his computers since at least the millenia changeover. He called back the next day saying that he had taken up the carpet between the front lounge and the kitchen, at the foot of the stairs and discovered that the casing had disintegrated.
My advice then, as he had been happy for thirteen years with the cable solution was to replace like for like but look for the most robust outer casing. None of us are getting any younger and another thirteen years will likely do him and me.
Ending a long story, cable now replaced, Internet restored, happy friend / client, job done.
