tiling onto hardboard?

[l sharp]

Oh god I am not going to attempt this myself. I have a pro for the job but he is up in London at buck palace preparing for the jubilee celebrations and will not be back till mid next week. I was just wanting to get some ideas as to how to tackle the task. We are going to chip up the hardboard and them he is going to fit the manhole cover and then slc the kitchen area level with the chipboard. Then going to lay durabase across the 2 areas and then tile on top with flexible adhesive. Got a plan of action now. Thank you all

 

[mattle40]

Came to the right place sounds like a good plan
;-)

 

[Rookery]

What's under the chipboard, is that part a floating floor? If so, I wouldnt tile on it at all. If its chipboard onto joists then I'd :-
Screw chipboard to joists at 300 c/s.
Overboard it with 6mm Hardie, glued with flexible adhesive such as Keraquick.
Rip up the hardboard from the concrete part.
Level the concrete part up to the Hardie part with SLC.
Fix tiles with a flexible adhesive, rapid or slow setting to suit yourself.
You will need a movement joint where the 2 substrates meet.
I wouldnt use Ditra in this instance.

 

[Time's Ran Out]

Don't forget the manhole is there for a purpose - it could even be an inspection for the rest of the street - so covering it without access could be against by laws.

 

[Ajax123]

Take up hardboard and use slc to level up to conservatory. Place joint between conservatory and main room. Take up chip board and replace with hardibacker oard and tile the lot. Make sure bay for tiles is not more than bs bay size....

 

[l sharp]

We are now going to hardiebacker over the top of the chipboard and slc across the top of the concrete to level it to the hardiebacker with an extension joint between the two areas. This makes more sense than the other options. I have conflicting advice one person has told me to screw the hardiebacker down and another ( which is what we were going to do ) is use tile adheasive. Also do we need to tape of the joins? Someone said yes and someone else said.not to?

 

[mattle40]

You use adhesive and screws with the hardi backer screws at 300 centres

 

[l sharp]

Your amazing thanks. Now trying to source the manhole cover. I am after 1 without handles that we can tile into any ideas?

 

[mattle40]

Just glad to help ;-)
http://www.howegreen.com/en/uk/index.php
These have been recommended a few time although I haven't used them myself
Failing these travis Perkins etc should keep something like this

 

[l sharp]

Oh my , started to chisel the hardboard up today. What a nightmare. Talk about stubborn any ideas as to how to get the old bits up that are clinging on for dear life?