am i mad? Marble Floor DIY!

[wetdec]

I thought BS when I was fixing was 18mm if using ply! Has it changed then?

Kev

Well if he has 18mm T&G floor boards as oposed to weiroc and you add 9mm then your getting 27mm of wood on 450 centers.

tiler

..

 

[Branty]

As much as it pains me, I have to agree with Mr Martin here. I thought the BS minimum is 15mm for plywood overlay.

 

[TilingLogistics]

As much as it pains me, I have to agree with Mr Martin here. I thought the BS minimum is 15mm for plywood overlay.

But you are not agreeing you are contradicting it's 18mm

 

[Branty]

But you are not agreeing you are contradicting it's 18mm

No, its 15mm. But as you know you can't buy 15mm ply anywhere so you would have to use 18mm. If you can find 15mm then that is the BS minimum. BS 6566 I think.

 

[Giveitabash]

You cant make an assumtion like that when the man hasn't even stated what is on the floor other than its wood, thats an unfounded statement !!!!

If he has overboarded floorboards with 9mm ply then the man could be correct.


tiler

..

Thanks for the replys...

The floor is mostly 22mm T&G floor boards with some parts 22mm moisture resistant chipboard on 75(w)mmx125(H)mm joists at around 400/450mm intervals now overlayed with 9mm ply... It feels quite sturdy..

Thanks again... 🙂

BTW - whats the worst that could happen if i just went ahead? ta

PS... im working night shifts so reading and replying in the mornings 🙁

 

[TheWrightTiler]

howdo mate

if on that thickness then SHOULD BE FINE???

worst that could happen is that the floor will flex causing the adhesives and grout to crack and MAY cause the tile to snap

check with the tile shop if tiles need sealed and use an impregnator sealer if they do, IF THEY DO NEED SEALED THEN DO IT, BEWARE THE WRATH OF THE WIFE IF YOU DONT AS THE ONLY WAY TO CLEAN IT IS TO REMOVE AND REPLACE THE TILES

seal once all round before laying and once again after grouting has dried

if a light coloured tile then use white cement based adhesives as they wont show through or stain as much as grey

use a flexible grout for grouting and wipe off ASAP

as for spacers its a personal choice but if nice and sqaure id go for 5mm on a floor

hope this helps

andy

 

[Giveitabash]

howdo mate

if on that thickness then SHOULD BE FINE???

worst that could happen is that the floor will flex causing the adhesives and grout to crack and MAY cause the tile to snap

check with the tile shop if tiles need sealed and use an impregnator sealer if they do, IF THEY DO NEED SEALED THEN DO IT, BEWARE THE WRATH OF THE WIFE IF YOU DONT AS THE ONLY WAY TO CLEAN IT IS TO REMOVE AND REPLACE THE TILES

seal once all round before laying and once again after grouting has dried

if a light coloured tile then use white cement based adhesives as they wont show through or stain as much as grey

use a flexible grout for grouting and wipe off ASAP

as for spacers its a personal choice but if nice and sqaure id go for 5mm on a floor

hope this helps

andy

Sorry but more questions...

What size notched trowel would be best? 8mm notched gives 2.8mm bed thickness according to the Ardex site... Which would mean...

For 26m If 8mm notched is correct i need 4.6 bags(22kg) of adhesive and 10(11kg) bags of grout for 3mm spacers... does this seems a lot?

Cheers again!

 

[marbleman]

As much as it pains me, I have to agree with Mr Martin here. I thought the BS minimum is 15mm for plywood overlay.

just use drit matting does away with all that timber as long as the floor boards are fixed correctly and the timber is clean , you use the correct adhesive in sticking the matting down , just look at the height saving and its a better method all together gives you a seperate membrane so timber will move under neath the matting, i would still recommend fexible adhesive on top ,but grout must be flexible
.

 

[Deleted member 1779]

Must admit if it were my 20m then I'd pay £500 for a pro to come round and do the lot.

 

[pjtiler]

Must admit if it were my 20m then I'd pay £500 for a pro to come round and do the lot.

thats good advice