tiling over chipboard need help

[doug boardley]

to be honest, the name alone puts me off, no more ply, it just sounds "gimmicky", I know that we all have to embrace new products, but they need to be well researched/tested prior to being unleashed into the market,and at least give some kind of performance data. I'd be surprised if this product is still around in another 5 years

 

[macten]

Let's face it - 18mm ply overlay just isn't an option 70% of the time in the real world.
People don't want ridiculous steps.
People don't want to buy new doors.
People want to be able to open their upvc doors.
People want to be able to fit their white goods back under their kitchen worktops etc.....

I think people who have not used a product aren't in a position to have an informed opinion.
It's all about common sense - if you use NMP correctly then you will know before you tile that the substrate is solid and you will be fine.
I overlay with ply when possible, but often it is just not viable for the reasons above and the customer will then probably go with someone who just lays it straight onto chipboard/floor boards and get a cheap botch job.

I know I defend NMP alot, but I promise you this - if I were to ever have a failure or I felt NMP was not fit for purpose I would be the first to tell you all about it.

 

[grumpygrouter]

Let's face it - 18mm ply overlay just isn't an option 70% of the time in the real world.
People don't want ridiculous steps.
People don't want to buy new doors.
People want to be able to open their upvc doors.
People want to be able to fit their white goods back under their kitchen worktops etc.....

I think people who have not used a product aren't in a position to have an informed opinion.
It's all about common sense - if you use NMP correctly then you will know before you tile that the substrate is solid and you will be fine.
I overlay with ply when possible, but often it is just not viable for the reasons above and the customer will then probably go with someone who just lays it straight onto chipboard/floor boards and get a cheap botch job.

I know I defend NMP alot, but I promise you this - if I were to ever have a failure or I felt NMP was not fit for purpose I would be the first to tell you all about it.

Hope you don't think I have been derogatory about NMP in my posts. I am not denagrating the product as a backerboard, just the claims that is a strength replacement for 15mm ply. It may well be so, but as yet, no one or any "approving" agency has clarified that it is so. I am unable to actually try out the product myself as it is not available in my area so I am unable to assess it an make my own decision as to it's suitabilitly. This is where the external testing would be of much value as then people like myself would have much more confidence in ordering a pallet load of the stuff and getting it delivered.

 

[macten]

I think it worthwhile you ordered a pallet load Grumpy. The number of jobs I would miss out on were it not for this product is very significant. NMP has been around for quite a while now yet I have never heard of a single failure with the product. I think that shows suitability and longevity alone. But the ultimate test is just trying it out on a job and jumping around on it afterwards and you will have no doubts to its suitability.

Does NMP when used correctly give the same strength as 15mm ply? I don't know but if I had to guess I would say not.
Is it strong enough when used properly with todays Polymer-modified adhesives - absolutely. If I'm ever in doubt I use a 2 part.
Is NMP a better substrate to tile onto compared with ply - absolutely in every way.

I can get you a good deal on a pallet load Grumpy if you ever decide to turn to the darkside!

 

[grumpygrouter]

Thanks for the offer Macten, I will consider it if and when the time comes. Currently I tend to use 6mm hardie, or if circumstances allow, Wedi board, but only if the floor ahs no deflection.