conservatory floor

[dun]

I've got a conservatory floor where base is concrete,then wood batons topped with wooden boarding.This is now rotting due to damp/condensation.I'm thinking of removing all wood,then laying 1/2 inch of sharp sand and bedding flagstones onto this.Is this a sensible move?

 

[2scoops0406]

Umm, this solution doesn't adress the damp problem though, it sounds like the flooring needs to be changed, but in conjunction with this, the damp problem needs to be investigated / fixed.

 

[dun]

so how about it i lay a plastic membrane over the concrete prior to using sand & flagstones?

 

[2scoops0406]

This depends on whether it is damp or condensation, did the original concrete base not have a DPM incorporated in it. What is the construction of the conservatory, dwarf wall, if so does this have a DPC incorporated ?

 

[dun]

Idon't think it incorporateas a DPM.

The conservatory is aluminium and glass,I think there is one row of bricks at base.

 

[masona]

Sounds like the base not done correctly, the only way round it, is to put down bitumen base as they do in ponds etc. This again is cutting corners without having to re-do the base.

 

[2scoops0406]

I have to agree with masona, esp due to the fact he is either a) a professional or b) a lot better at DIY than I am You have to identify where the damp is coming from first if you have any chance of solving the problem. If there is no DPM in the base then yes somehow you have to provide one. The fact that there is only one brick course before the windows leaves a bit of concern, is there a DPC in this brickwork?

Actually, thinking about it I know masona is a professional. Silly me.