tiling a floating floor

[Deleted member 18697]

We will be tiling a large showroom of about 180sqm in limestone. The floor is oak floorboards fixed to joists. The client is keen to not wreck the oak floor and therefore wants to lay plastic and then put two layers of chipboard screwed to each other therefore creating a floating floor. This set up in my mind is a big no no.

I proposed to glue and screw down 10mm Dukkaboard to the whole floor but they do not want any adhesive on the floorboards.

Anyone got any bright ideas that may be a solution in this situation?

Any advice/comments would be appreciated.

 

[Ajax123]

Plastic membrane then 40mm of Gypsol TimBRE screed... Would probably be a lot cheaper than two layers of chip as well.

 

[Chalker]

Fermacell 25mm flooring. Tile straight onto. This will will alone on top of the timber floor.
You would need to contact fermacell and also check for weight loading on the existing floor.

 

[CJ]

Could the oak floorboards be removed easily??

 

[lmkitchens]

In the showroom of the kitchen firm I used to work for, they laid lining paper so that the tiles could be pulled up and swapped easily. Never had an issue of grout cracking etc.

Although this was on concrete floors..

 

[jonnyc]

dave
i have found guthahr indor tec2 in trimline brochure. it is total decoupling as mat just loose laid on subfloor.
i see same problem as you that if we need to lift tiles whilst bedding which is common the mat will get ripped up every time.
maybe we should think about stapling the mat to the subfloor which may take some of the effectiveness away but if we glued and screwed cement board over the oak first as a permanent layer which would sort out the problem with laying on to timber ,then the tec 2e is only being used as a means to replace stone floors in future easily without damaging subfloor below.
would be interesting to know if anyone used gutjahr indortec2 before or any better ideas.