XPS board and flexy ady. Any tips for laying. - TilersForums.com

[ubdai]

Just about to lay down some XPS insulation boards for the UFH system and would like know the best way of getting the most contact between the board and the ady. ie do I do it the same way as with floortiles, place them into the ady and then give them little wriggle or is their a better method that can be used.
The xps boards seem to be semi flexible but can still snap if not careful when handling them

cheers
ubdai

 

[Andy Allen]

bed of adhesive, I normally use a 6mm trowel, put the boards down and wiggle them about, I normally stand on mine and do the shuffle...lol

 

[Rookery]

Are these the blue ones? What thickness are they?

 

[Lee@emctiles]

Are these the blue ones? What thickness are they?

What thickness are they once they have been trod all over and compressed???? Rendering them useless.....

Sorry.......hate these boards.......just my opinion and be debated many a time......there not fit for purpose.

 

[deanwessex]

Have to agree with Lee, you have to be very carefull not to crush them when laying

 

[Ajax123]

I too agree with lee...... Which is possibly a first??

great for screeding on top but tiling direct.... Not sure at all

 

[Diamond Pool Finishers]

And the screed needs to be 75mm thick as it is deemed a floating floor under BS , anything under is not -up to spec !!

 

[Ajax123]

And the screed needs to be 75mm thick as it is deemed a floating floor under BS , anything under is not -up to spec !!

65mm if domestic 75mm if its commercial and must be reinforced.

 

[DHTiling]

None cement faced extruded foam boards should be banned IMHO..

 

[Uheat - Keith]

Good morning all,

There is about six grades of the XPS boards, ours are the top grade, High Density and have a Compressive Strength of 300 kPa (BS EN 826) That is about a 30 stone man standing on them with no problem.
These boards have the same Thermal Conductivity as Construction boards as they both have the same core. Construction boards then have the 1mm fibreglass mesh embedded into a cement polymer mortar on each face.

Our Ekoboard sales are over 150000 sheets over 5+ years.
We installed these in our front office in 2006, the Tilers called off for three weeks and we walked over them for all that time, no problem.

We do advise that UFH and/or tiling should be carried out sooner, i.e next day after installing boards.
We also stock/sell Marmox.

Warm regards, Keith