I am trying to replace a portion of the floor in my bathroom as the seal round the bath has leaked and rotted the floor. It's a fairly new property (12 years) and the floor seems to be constructed as follows:
Top layer = chipboard
Below this appears to be some type of plasterboard / light concrete panel - I think this is for sound proofing.
Below that is a thin layer of insulation.
Finally there is a layer of wood panelling.
My problem is this: I can't seem to find any joists that the chipboard is sitting on. I want to cut the old chipboard back to a joist for a secure joint for the new panel. As fas as I can make out the joist are underneath the wood panelling I mentioned above.
Do I just lay a new chipboard panel on top of the plasterboard material? This doesn't sound right to me - surely the chipboard should sit on some joists?. The plasterboard material has cracked, should it be replaced? What exactly is this material?
Any help is much appreciated.
Cheers
Jon
Top layer = chipboard
Below this appears to be some type of plasterboard / light concrete panel - I think this is for sound proofing.
Below that is a thin layer of insulation.
Finally there is a layer of wood panelling.
My problem is this: I can't seem to find any joists that the chipboard is sitting on. I want to cut the old chipboard back to a joist for a secure joint for the new panel. As fas as I can make out the joist are underneath the wood panelling I mentioned above.
Do I just lay a new chipboard panel on top of the plasterboard material? This doesn't sound right to me - surely the chipboard should sit on some joists?. The plasterboard material has cracked, should it be replaced? What exactly is this material?
Any help is much appreciated.
Cheers
Jon