Hardwood floor separating, collapsing.

Norman_Castle

There will be flooring under the laminate but its possible parts of the floor were lifted to install the heating then poorly replaced leaving gaps which might be the cause of the current problem.

Joists are often levelled with slate or similar which can cause the floor to sag.

paulcam

It's not laminate, it's inch thick hardwood.

FreeBear

paulcam said: While I wouldn't expect a joiner to know the difference between an IDE and a compiler I wouldn't know what the correct tools were.

IDE as in the drive interface, or a development environment ?

Much prefer to use the command line and GCC...

paulcam

FreeBear said:

Much prefer to use the command line and GCC...

Been there.  vim and make   But for java eclipse or IntelliJ are faster for "most" things.

Norman_Castle

paulcam said:

It's not laminate, it's inch thick hardwood.

How wide is the gap between the joists? How wide are the inch thick hardwood planks?

neilmcl

Norman_Castle said:

There will be flooring under the laminate but its possible parts of the floor were lifted to install the heating then poorly replaced leaving gaps which might be the cause of the current problem.

Joists are often levelled with slate or similar which can cause the floor to sag.

It's not laminate, The OP says it's solid oak boards.

SameOldRoundabout

My joiner husband says he’d be amazed if someone has laid it with the joists unless there’s noggins for support. Also it should have been glued in every join with the t&g. How sure are you that you know which way the joists run? I’d lift the carpet in the room next to it and see which way the floorboards run, joists will be the opposite way. 

Norman_Castle

neilmcl said:

Norman_Castle said:

There will be flooring under the laminate but its possible parts of the floor were lifted to install the heating then poorly replaced leaving gaps which might be the cause of the current problem.

Joists are often levelled with slate or similar which can cause the floor to sag.

It's not laminate, The OP says it's solid oak boards.

I know, I quoted him saying it in the post immediately before yours.

mwarby

Inch thick oak floorboards must require some size of joist due to the weight of them. I notice the picture shows a corner, could it be that the joists change directions under floor

paulcam

The joists are definately with the boards.  There is an electrical cupboard behind that corner and it's floored 90* to the hall boards.
I would expect there is something under them, but when the T&G dislodges the board sinks a cm and becomes springy, creaky and cracky.  So if there are noggins or whatever there isn't one there.
However the suggestion of gluing the T&G gives me something to try.  I'll see if I can get some PVA wood glue online and glue the boards next time they separate.