I have a very frustrating home WiFi network.
The building in which I live is very (over 300 years) old and was long-ago extended on one side so that the (15"-thick) formerly-external wall is now internal; owing to layout, the radio must often penetrate this thick wall with as much as 70° incidence (i.e. direct line passes through 1114mm of solid brick; since 2.4GHz has a wavelength of approximately 125mm, this is almost 9 wavelengths!).
Therefore the only surprising thing is that I get any coverage at all on the other side of the extension from the access point (which I put down to reflection off surfaces around doorways).
I have tried power line communication, but the electrical wiring is also pretty old and not of particularly great quality: connections can be even less reliable than WiFi.
It strikes me that this is a perfect use case for an additional access point or wireless extender, which would normally be my next consideration.
However, since we are about to take up floorboards in a couple of rooms and move some other wiring around, it is a very good opportunity to install some data network cabling (which, whilst perhaps not needed, could provide some good future-proofing against unforeseeable needs over the next 20 years: increased home automation, media distribution, etc).
I want to maintain full WiFi coverage throughout, so will end up connecting at least one additional access point to any new cabling. Devices that remain fixed can switch to being fully cabled rather than using up the existing WiFi.
My questions are:
I'm thinking two cables to each of sitting room/study/bedroom and a single cable to the kitchen, which would total about 100m in aggregate. Of course it's hard to say without knowing what requirements I may have in the future, but does that seem adequate to accomodate 20 years of growth (the last thing I want is to pull up floorboards again)?
Cat6 seems like an absolute minimum requirement for adequate tolerance to any future requirements, but for only 100m of cabling it seems churlish to hold back from a higher quality cable whilst undertaking all of this work.
Should I stick with copper, but go all-out with Cat7A (I estimate the additional cost over Cat6 to be maybe £100, which is completely affordable)? Or would fibre make more sense for true future-proofing (I have no grasp on what the extra cost would be, especially given that media converters will be required at each end of every connection for the time being)?
Is this all overkill for fairly mundane household needs (albeit increasingly streaming video etc over the data network)?