WiFi extender for full fibre in a big old house

Evening folks

We recently moved to a large Edwardian semi and had full fibre broadband installed (lightning fibre is the company) zyxel router and a 150mbs package. The router is in the front room downstairs.

On the middle floor the internet is ok but the top attic room receives almost nothing.

I have a zyxel mesh extender but it doesn't seem to work....

I plugged it in on the middle floor. Stood next to it the signal is fine and speed is about 120mbs.

Go up the short flight of stairs to the top floor and the speed is sub 10mbs!

If I try the extender in the attic room it shows a red light and not enough signal from the router to work.

Any ideas what I can do? Assume I need two boosters/repeaters? I'm a bit of a novice here but need WiFi for the top bedroom to stream via a smart TV and mobile phone use.

Really appreciate any tips/advice!

Thanks everyone, so many useful answers I really appreciate it.

I'll do some research over the different options. I know it's tight but I really don't want to spend tooooo much- it's mainly so our foreign students in the top bedroom can enjoy the internet- for is to use on the second floor is currently ok. Our package is 150mbs (you can go 1gb plus with this company) but as long as we maintain near 100mbs or so that'll be more than enough.

As you can tell I really am a novice with this stuff.


The eero kit looks great but a two pack of the pro 6 is £290 so fairly spendy. I like the idea of something that would work in the summerhouse too which must be 100 ft away. Not sure if this system would be sufficient or if I can mix and match with the deco outdoor stuff.

I shall keep up with the research!