another chipboard query

[doug boardley]

firm I'm subbying to have decided to do away with ply overlay on bathroom floors, at my suggestion, but they've caught me cold, I've always tiled onto overlayed ply and not sure of best method to tile onto chipboard (22mm,well screwed, with a moisture resistant coat on top).Looking for some advice so I don't look a fool!
cheers
Doug

 

[oldgit]

if its the waxed top type chip you will be advised to steer clear,but i would find out what the coating is,if its just waterproof green chipboard then i would use any 2pt,topps are now doing 2pt palace rebranded topps for £16 this cover about 3.5 mts

 

[AllurePTS]

I cant help wondering why you suggested it doug ??? ........if they are doing their upstairs floors in 22mm ....tell them to double dwang the joists and do the bathroom in 18mm marine ply INSTEAD of chipboard (if they are all getting tiled that is) - problem solved.

 

[doug boardley]

it's not the moisture resistant green board, it's grey resinous looking topping,seen it hundreds of times, just can't think what it's called!

 

[Perry]

firm I'm subbying to have decided to do away with ply overlay on bathroom floors, at my suggestion, but they've caught me cold, I've always tiled onto overlayed ply and not sure of best method to tile onto chipboard (22mm,well screwed, with a moisture resistant coat on top).Looking for some advice so I don't look a fool!
cheers
Doug

one of the best ways is to overlay it with 12mm ply : pete

 

[doug boardley]

I cant help wondering why you suggested it doug ??? ........if they are doing their upstairs floors in 22mm ....tell them to double dwang the joists and do the bathroom in 18mm marine ply INSTEAD of chipboard (if they are all getting tiled that is) - problem solved.

It's a massive new build mate,floors were down and studs up months before I suggested it

 

[doug boardley]

one of the best ways is to overlay it with 12mm ply : pete

that's what we've always done Pete, but because I've (stupidly?) suggested there might be an alternative,site agent is keen to try one to get over step issues

 

[DHTiling]

You can't tile on it doug.......use a thin ply for grip and 2 part sticky....

 

[doug boardley]

thanks all for replies, will tell site agent (sheepishly haha!):74:

 

[Perry]

that's what we've always done Pete, but because I've (stupidly?) suggested there might be an alternative,site agent is keen to try one to get over step issues

I quite often tile on chipboard with just decoupling matting but it is 40mm thick with steel joists at 300 centers that would be an alternative for him. :lol: I always use a reducing strip the same width as the door only has to slope 10mm to the hight of the carpet : pete

 

[Grace'sDad]

Dave, did you manage to find out what this grey (or sometimes green) coating is called? Ta!

 

[BDS]

Yeah i`d like to know too cos i`m on with a job with the same flooring by the sounds of it

 

[DHTiling]

Sorry lads..i forgot.....busy man you know......leave it with me...........( again)..

 

[mz30]

On a building site i will tend to want any chipboard floor to be plied out,however on my own house i tiled straight onto the chipboard ,5 years down the line there is still no problem with the floor.

Now 2 years ago i tiled my mum's bathroom floor and used marine ply and screwed every 6" and it has now cracked along a couple of grout joints,i used the same adhesive/grout on both jobs(mapei) and yet the job with the higher spec has failed,what does that tell you?

By the way my mums bathroom has a lot less traffic than mine does,and the only thing i can put it down to is the fact that there are two lots of surfaces moving in hers, compared to the one in mine,can't say about the site work as you never really go back into those house's.

 

[DHTiling]

Right here we go........

EUROSPAN® HDX Laminated Chipboards (Hexham, UK)
These load bearing boards can also be offered with a number of value added finishes:
HDX Protect: For use in areas where the surface needs to be highly resistant to
abrasion. HDX Protect is coated on one side with grey melamine kraft paper and
has anti-slip properties.

http://www.egger.com/pdf/Eurospan_en.pdf

scroll down to see the grey coated one............