Tiling onto Block and Beam

[Tideswell]

Hi - I’ve built a suspended block and beam terrace to sit below patio doors.

Plan is to tile onto this using same tiles as inside - 900x600x25 limestone tiles and tiles will end up flush with doorstep.

I’ve built a fall away from house into the block and beam but not sure it’s enough (it’s around 1 in 100).

My query is whether to a) lay a sand/cement screed first straight onto the B&B and create more fall this way and then tile onto this or b) try and tile with the adhesive straight onto the B&B and thicken up the adhesive at the house side?

I need to add around 20mm height at the house side below the base of tile so I think this is too thick/deep for option b anyway.

If screed any recommendations on how to create a grade? Use a dry mix?

If can adhesive is there a product out there that can be set that deep?

Thanks!

 

[jrw007]

Hi there really curious to see how you got on with this because I would like to use a block and beam below my 20 millimeter outdoor porcelain? Can you give me an update please much appreciated in advance.?

 

[Tideswell]

Sure - we are tiling it this weekend so fingers crossed. So far I have slurried it to lock in the blocks and we are going to use tile backer boards onto the BnB instead of a screed. Quicker and easier to install and similar price.

 

[jrw007]

I guess you're using the boards to further strengthen blocks are not part of the beams - how are you securing them?

 

[Tideswell]

Yes - backer boards have an extra strength, plus levelled out the highs and lows between the beams, and lastly added the extra height we needed. Managed to add a little extra fall by putting more adhesive beneath the boards on the house side. All in all it worked out well. Just need grouting now!