Squeaky carpet - causes?

[diyyid]

I had carpet installed just under year ago but have started to notice it's squeaking in certain places and was wondering what could be the cause. The original floor is tiled rather than wooden planks and the carpet was installed with underlay. It's rather annoying and I'm starting to notice it in more and more places.

 

[ree]

Doubtful that its the carpet - what exactly is underneath the carpet. Are the tiles ceramic? Is the floor suspended or a concrete floor?

 

[diyyid]

I'm not sure what kind of tiles they are tbh, having spoken to my friend who does odd diy jobs, he reckons it's a concrete floor with a tiled layer. I've attached a picture in case that helps. It does look ceramic

Edit: looking back at some old pictures, the passageway doesn't have tiles, plain concrete from what I can make out. But I've noticed the noise in both tiled and untiled areas

 

[diyyid]

There's a spot in the bedroom that's particularly noisy and there I have to apply light pressure with the palm of my hand to hear a squeak which increases as I increase the pressure. If it's not the carpet, I suspect it could only be the underlay making the noise, given how lightly I'm pressing to hear the initial squeak

 

[ree]

They are vinyl tiles. They are well stuck down - i've never heard of vinyl tiles causing squeaking noises.

I have no experience of carpet or carpet underlayment, perhaps someone more qualified will come along on here.

Long established conc slabs have finished any "major" movements after a couple of years.

 

[AronSearle]

I know sod all about carpets, but if it was timber my answer would be 'something is moving'.

I can't see how squeaking can occur without something rubbing/flexing.

It could be the underside of the carpet is rubbing agains the vinyle, I have no idea.

But maybe try either an underlay that lets the carpet move without rubbing (like a slip layer), or a more 'grippy' underdlay or stick the carpet down.

Maybe someone who knows about carpets can add to this.