osb/cement-board countertop..for tiling

[ekon]

Just to say that I have posted a similar question on a general DIY forum..and had a couple of some helpful posts back..but would be interested what anyone on here thinks too. (>"tpt".. if you're on here too..don't worry about answering..thnx for help in the "other place":


planning to use 600X600 tiles on 70+ cm-deep counter-top

22mm osb (already in place)..now have to fix the cement backer-board to it before tiling. The backer-board is a make called Mineret..it's what my builder's merchant stocks..its a cement-fiber board but I can't find anything on the net about it!

Q1 do I need to prime the osb before applying the adhesive and screwing down the backer-board onto it while still "wet"? if I do need to prime the backer-board first what is best product to do it with?

Q2. what do people reckon would be the best sort of adhesive for fixing backer board to osb?

Q3. Once the backer board is on and fixed/set... is there anything else to do to the backer-board before applying the tile-adhesive to it ...wet the board with a sponge?...any primer needed?

Q4. what sort/brand of S2 adhesive is best for bedding big 600mm square tiles? (high-gloss floor tiles) onto the backer board?

thanks

 

[swanman]

What alot of questions

Ive only used hardi backer board so cant really comment on the board that you have used

But i fix hardi down with a one part rapid set flexi

And there is no need to prime just fix tiles straight to it

 

[White Room]

Might be worth wiping a damp sponge over the cement board just to remove any dust, the one you mentioned of never heard of it.

 

[Time's Ran Out]

600 tile on a 700 deep worktop - it will look daft! IMHO
If it's a porcelain tile read the box as most are not suitable for worktop areas for food hygiene.

 

[ekon]

you may well be right John..I am only responsible for doing the work!."design" is her indoors! Its an old house with very thick interior walls so all the pipe-work/electrics runs at the back of the (modern) kitchen-units ..hence the extra 10 cm depth and the need to make a worktop. Units are replacements for 20+ year old ones. Last time/last countertop she chose 20cmx15cm tiles which looked ok (imho).

nb the osb I got (same builder's merchant 20 years on)..doesn't appear to be a patch on the "Sterling-board" I took out.

What would you do John..re the tiles..both size-wise and type-wise?

..anyone else feel free to chip in (scuse the pun)

 

[Time's Ran Out]

We've had 3 different tiled worktops in 30 years and last change was to post formed laminate. Always liked mosaic or small tiles but everyone reckoned it was a tilers house!! Unless they are purpose made worktop tiles, with special pieces for edges, then they never look 100% right. But cost comes into it and wider than 600mm will be expensive. Polished porcelain have a degree of holes that will ingrain in time and never stay hygienic/clean.
At the end of the day all views expressed are personal and although I may have the Eric (as in Bristow) attitude - no offence is intended.

 

[Martino]

HAHAHA nice little jungle comment there lol!, Instead of tiling the worktop why not go for bushboard anthracite worktops? they are the dogs dangles imo