I have been advised, by technical support at Dunlop/Bal, to use their most expensive adhesives but I do not believe I need to use these adhesives that cost more than my tiles per m2! It is as if I told them I was going to fix tiles on an old creaky floor with distorted floor boards that are coming off.
My floors (in bathrooms) are new and therefore I had to do a lot of work to comply with the new regulations. I used 22mm water resistant T&G chipboard which is nailed and glued to every joist, the nails being spaced 300mm or less. It is also glued on every single joint and also every single joint is supported and glued underneath (no floating joints). Also, the floor areas are not large (3.5x2m average)
They recommended BAL Fastflex 2 part or Dunlop 2 part Rapidset Flexible, which, as I said above, are ridiculously expensive.
Can people recommend cheaper alternatives that will do the job just as well?
Ta

there right imo

You can get a single part Fastflex

shouldnt really tile onto chipboard,thats why they are giving advice to use 2 part flexi adhesive.However if you ply with 12mmplywood over the chipboard and use fexi adhesive and grout,you will be fine....this is just one option.

Would in theory need a good 2 part ( flexi with latex additive ) to tile onto chipboard ( that is if i would do it at all ) Usually not
Substrates should be screwed not nailed
Water resistant chipboard is still not a good substrate to tile on.

#Would recommend first laying ditra matting with 2 part flexi after you have screwed down floor.
then tile

you should also use screws not nails.whoops

BAL prices.........one word..........FORTUNE.........

I'm sure you could find a cheaper brand that's still decent and guaranteed and will do the job just fine. Have you tried calling Mapei 0121 508 6970 to see what they recommend?

Originally Posted by Dan

I'm sure you could find a cheaper brand that's still decent and guaranteed and will do the job just fine. Have you tried calling Mapei 0121 508 6970 to see what they recommend?

I know that Mapei technical would not recommend tiling directly onto a nailed chipboard floor.
The guys are very to the book

granfix ultimateflex sp or mapei kerraquick with there liquid are both on par with fastflex and cheaper if you can get trade prices.

Mapeis black book give a few addys that can be fixed to chipboard, give them a call

Toppfix 2 part...........made by Palace, around £22

Originally Posted by Leatherface

I know that Mapei technical would not recommend tiling directly onto a nailed chipboard floor.
The guys are very to the book

I was just talking about a cheaper brand. Of course take the advice as above too, which was said a couple of times to screw, not nail.

Originally Posted by Dan

I was just talking about a cheaper brand. Of course take the advice as above too, which was said a couple of times to screw, not nail.

Sorry no offence meant

Originally Posted by Leatherface

Sorry no offence meant

Almost some taken. So go steady on your correcting people. It can get really annoying, especially when you're out of line so to speak.

Originally Posted by CJ

Toppfix 2 part...........made by Palace, around £22

i think its now £16.

It takes about 5 hours to go off, I think

Still waiting to try the BAL fastflex "SINGLE" ????

Originally Posted by CJ

Still waiting to try the BAL fastflex "SINGLE" ????

How expensive is that one CJ?

Originally Posted by Dan

How expensive is that one CJ?

A lot trust me........around the £40+ mark.......

Originally Posted by Dan

How expensive is that one CJ?

Only had the Bal sheets on that Dan..........no clue as to price.

As Dave said..........chuffing dear knowing Bal

Originally Posted by Dan

Almost some taken. So go steady on your correcting people. It can get really annoying, especially when you're out of line so to speak.

Take it easy mate
The apology was there straight away, have been very careful not to offend and also give good advice. Was not meant as a "correction"
Just to say that there is absolutely no way that Mapei Technical would ever 100 percent recommend tiling onto a nailed down chipboard floor.
They may have some adhesives that in theory should do the job, but I have spoken to these guys enough times to know that they would first recommend appropriate action prior to commence tiling
Regards

i get 2 part fast flex in white for £43 for both powder and liquid,so its got to be cheaper than that surely.

Not really.... a couple of quid....i have already priced it..

Its £47 in........dare I say that word


Oh......read this lot

http://www.buildingtalk.com/news/bug/bug122.html

Originally Posted by Leatherface

Take it easy mate
The apology was there straight away, have been very careful not to offend and also give good advice. Was not meant as a "correction"
Just to say that there is absolutely no way that Mapei Technical would ever 100 percent recommend tiling onto a nailed down chipboard floor.
They may have some adhesives that in theory should do the job, but I have spoken to these guys enough times to know that they would first recommend appropriate action prior to commence tiling
Regards

Not a problem.

Plenty of people already said to screw not nail and I thought I'd offer some advice about the expensive adhesive, what the guy was asking about. So I did. That's all. I didn't want to repeat what had been said about the nails. And of course Mapei or anybody else would say swap those nails for screws first. I never said anything about Mapei okaying the nails.

It looked like your were correcting me on something I never commented on. Already it's getting annoying so let's leave it at that hey? No harm done.

Originally Posted by Leatherface

Take it easy mate
The apology was there straight away, have been very careful not to offend and also give good advice. Was not meant as a "correction"
Just to say that there is absolutely no way that Mapei Technical would ever 100 percent recommend tiling onto a nailed down chipboard floor.
They may have some adhesives that in theory should do the job, but I have spoken to these guys enough times to know that they would first recommend appropriate action prior to commence tiling
Regards

Even in their black book they say certain adhesives can be applied to chipboard but their tech line do's advise that other methods to be used for a better fixing, as in ply to the preference of chipboard. So leatherface is correct and other methods may be better. Abit of sbr has never let me down though

Thanks for the replies but there is one thing that people, like Dunlop/BAL technical support, are missing: the boards are nailed AND glued. I cannot see how screwing them is going to make them any better fixed. If I had olny used nails, fine, they are not as good as screws on their own

they may not break free but theres even less chance if there screwed probably a 80% less chance.

My merchant recommended BAL flexible single part which is cheaper but still flexible. Any good?