Creaky floor 😣

Carpetto

Moved here 8 months ago.
The floor in our bedroom is very creaky in places. It is a source of great irritation. Sounds as bad from downstairs as up.
Today we have lifted the carpet to see what's under there. 
It is board nailed then screwed onto rafters with another board screwed on top. My guess is the second board may have been an attempt to improve the creakyness as it as it is slightly worse where we have removed the second board.
That bit of the house is an extension built in 80's I think.
Is there any remedy for this. Would re boarding/fitting floor boards solve it does anyone know

CliveOfIndia

What sort of board - ordinary chipboard?  If so, and it's been nailed, this is very common.

Usually, adding screws will cure the problem.  Take one of the screws out and look at the thread.  Is it threaded the full length of the screw, or only about 3/4 of the length?  If it's not fully-threaded, replace them all with ones that are (just be careful not to screw into any water pipes or electrical cables).

But first, remove the top layer of board and see what's underneath.  Simply adding another layer on top of the original one won't help.

While you're at it, get some talcum powder into the joints between each board.  This acts as a lubricant, and can stop them rubbing against one another.  Not strictly necessary if they're properly screwed into place, but there's no harm in going for belt 'n' braces.

twopenny

Indeed I had creaking floorboards, wide 1920s ones.
I worked out where the squeaks were and added an extra nail between the ones there, into the joists.
To my surprise it worked a treat.
I've not done it on random board though.
What sort of board is it and is it screwed to joists? I would think board would wear around screw heads with time allowing give.

housebuyer143

In my old house we had horrible creaky floors and it turns out the dividing internal wall had come away from the floor. We ended up knocking down one side of the wall, propping it up from the ground floor and then screwing large brackets from the wall to the floor to pull it back together. 
Completely stopped it and removed the gap into the next room so made it quieter also. 

Silvertabby

I was going to suggest talcum powder as well - it really does help.

NSG666

Take an existing screw out and if it has a thread all the way then remove them all - full length threads can cause jacking which is where the screw pushes the board away from the joist as it goes in then cannot pull the joint back together because of the threads.
Use something like these and don't use the existing holes.
Spax Chipboard Flooring Screws - 4.5 x 60mm Pack of 300 | Wickes.co.uk

Carpetto

Thank you for giving us hope and some things to try

twopenny

You can usually tell where the joists are by where the current screws/nails are.

Follow the line and bung another one or two in

ripongrammargirl

We have the same problem. Moved into a bungalow 5 years ago and certain areas of the floor creak like mad. Tried everything from WD40, talcum powder under the boards, extra screws and nails, even got a carpenter round who said it can’t be fixed due to the nature of the build and he crawled around under the floor in the tiny space of the foundations (brave man). He added some extra wood blocks under the joists which eased it for a few weeks but the creaks have returned and will not be exorcised!! You soon get to know where NOT to stand but any burglars won’t get far! If anybody has a 100% way of solving this we, and our carpenter, would love to
know.

stuart45

You might have a Nightingale floor, which was designed as a warning from a Ninja attack.

greensalad

If the boards have been nailed into the joists, then screwing instead will help. Our upstairs conversion is horribly creaky as it was poorly done by previous owners. Before we had the carpet fitted I went mad with a box of screws. It helped an awful lot (sadly I ran out of screws at 11pm the night before the carpet fitters were coming so we still have some very creaky areas!)