Laminate Flooring & Conservatory

[t4rix]

Hi There,

Need some advise please.

I'm planning to lay laminate on top of tiles(I know it's not ideal but I don't have the time to take the tiles off as it's rock solid) and I've gone for 7mm laminate sheets. I'm in the process of choosing the underlay and not quite sure which one of these would perform at blocking damp rising from sub-floor.

I'm unable to attach link - apologies.

A. Go to Amazon website and enter B00A8J8XW0
B. Go to B&Q website and enter 4002245736610

Many Thanks

 

[MMUK]

Damp rising from sub-floor? There shouldn't be any :?

I'd go for the foil backed fibre board underlay as the foil will create a thermal barrier.

 

[t4rix]

Well tile floor is always cold(understandable) and sometimes covered in condensation(only when it's really cold).

They both come in foil.

 

[RobinBHM]

If its condensation, it would seem the floor is not insulated allowing the floor tiles to be at a lower temperature than the dew point. I would tend to think that the standard 3mm foam would be sufficient, I cant see humid air from the room getting through the laminate and foam to form condensation on the tiles below. If the humidity level in the conservatory remains high, it may be that condensation forms on the laminate -it can be a cold hard plastic.

 

[n0legs]

Vapor barrier first with fibreboard underlay. Allow vapor barrier to go an inch or so up the wall/skirting, will be covered later with edge beading ( I presume you'll be having some or new skirting)
200mm overlap at joins and taped.
Lay fibreboard with a 10mm gap at room edges.
Lay floor, make sure you leave a decent expansion gap minimum 10mm ( more if you can get it ) conservatories and laminate/wooden floors don't always mix well.
Job done and enjoy.