Creaking timber floor: any solution?

I've a creaking upstairs floor even though the floor (marine plywood) has only been down, as part of a complete renovation of an old house, for the past 6 months or so (I just moved in so didn't notice it until now). The creaking extends to under the newly tiled bathroom floor. I'd rather not have this creaking every time I walk on it so is there anything that can be done to end it and would it be a big job? (the builder will be returning to fix a few things in the next week so I'd like to propose a few solutions.) Thanks.

autumnalcore

Fuaranach wrote: »

I've a creaking upstairs floor even though the floor (marine plywood) has only been down, as part of a complete renovation of an old house, for the past 6 months or so (I just moved in so didn't notice it until now). The creaking extends to under the newly tiled bathroom floor. I'd rather not have this creaking every time I walk on it so is there anything that can be done to end it and would it be a big job? (the builder will be returning to fix a few things in the next week so I'd like to propose a few solutions.) Thanks.

Lots of reasons for creaking. Is it ply on top of original floor boards, ply on original joists or has it all been replaced. Whats the distance between joists, the thickness of the ply, any noggins, is it screwed or nailed, whats the distance between fixings on the edges of the ply, distance between fixings in the center of the ply, if ply directly on joists are all joints centered on joists, are there expansion gaps between sheets?

katy39

autumnalcore wrote: »

Lots of reasons for creaking. Is it ply on top of original floor boards, ply on original joists or has it all been replaced. Whats the distance between joists, the thickness of the ply, any noggins, is it screwed or nailed, whats the distance between fixings on the edges of the ply, distance between fixings in the center of the ply, if ply directly on joists are all joints centered on joists, are there expansion gaps between sheets?

:eek:

the_pen_turner

katy39 wrote: »

:eek:

and thats only the obvious stuff

like were they flooring screws or normal screws. normal screws break off when you stress them. flooring screws are designed for that.


put a half full glass of water on the floor and walk around. see how much deflection is in the floor. this will break the screws or pull the nails and allow it to creek

katy39

the_pen_turner wrote: »

and thats only the obvious stuff

like were they flooring screws or normal screws. normal screws break off when you stress them. flooring screws are designed for that.


put a half full glass of water on the floor and walk around. see how much deflection is in the floor. this will break the screws or pull the nails and allow it to creek

:eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek:

the_pen_turner

katy39 wrote: »

:eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek:

there are a lot of reasons floors creak.
span of the floor joists and proper thickness and grade of timber used .