Water under suspended flooring.

[Deluks]

You state that the oversite is 76cm from the floorboards.
That's a lot of void to fill, you can't just fill it up, it will all need to be compacted in layers as you go.

A block and beam floor might be a better option, but if your existing joists are ok and the void remains ventilated, then insulating between them would be a lot less work. Although you should liberally apply some wood preservative to the timber whilst the boards are up.

 

[JohnD]

It will be best to find the source of the water and, if possible, cure it.

 

[Squiggds]

You state that the oversite is 76cm from the floorboards.
That's a lot of void to fill, you can't just fill it up, it will all need to be compacted in layers as you go.

A block and beam floor might be a better option, but if your existing joists are ok and the void remains ventilated, then insulating between them would be a lot less work. Although you should liberally apply some wood preservative to the timber whilst the boards are up.

Sorry it's 67cm. Not much of a difference.

Yes,

Fill it, compact it, then sand, then Damp proof followed by insulation with concrete poured over the top.



All the previous flooring has been ripped up n the house and floorboards exposed. The house is currently empty (living with parents in law) so either way would be ideal.

£4k is the quote , which seems reasonable to me for the amount of work that will need to be done.

 

[JohnD]

£4k is the quote , which seems reasonable to me for the amount of work that will need to be done.

I wonder what would be the cost of rectifying the source of water.

 

[Squiggds]

I wonder what would be the cost of rectifying the source of water.

Definitely cheaper.

But the conundrum I have is that new flooring and a kitchen is being installed.

Should the suspended floor start to fail, I'd have to rip up the flooring and kitchen to get back to it.

When my house is currently empty.

So many choices and dilemmas!

 

[JohnD]

It's always very depressing to try and repair, say, a leaking pipe or drain when a previous person has laid a concrete floor on top of it.

But not as unusual as you might hope.