'No More Ply'

[cgadmin23]

Hi All,

Just about to start tiling my bathroom with marble tiles. The room needs to be tanked as it going to be a wetroom.

The room has a stud wall which is back to the frame and a solid wall which has been taken back to the brick.

I need to prepare the walls so that they can hold the weight of the marble tiles. I have already purchased a roll of Dura WP membrane to tank the walls once ready.

Having consulted a local tiling shop they have advised that 6mm 'No More Ply' can be applied to both walls and then tanked.

Does anyone have experience with this type of backer board?

Is 6mm strong enough to hold marble tiles?

Is there a particular kind of adhesive I should use?

Would I need to use additional fixings for the solid wall, or will the adhesive be enough?

Any advice on what I should do is appreciated.

Thanks

Chris

[macten]

I'd personally use Hardie 500 for the wall as it's 12.5mm thick.
6mm for floors is fine so long as the substrate is rock solid.

[macten]

Go for Hardie 500 for the walls (12.5mm thick)
NMP at 6mm will be fine so long as the substrate is rock solid

[chris.tiling]

as the guys have said, 6mm ok on floor but would normally use 12 mm Hardibacker on walls. Use white flexible adhesive for tiles. Gray may discolour the tiles

[cgadmin23]

Thanks Guys,

One last question: is adhesive alone strong enough to bond the board to a brick wall so that it can hold marble tiles, or do I need to screw it in place?

If I need to screw it in place are standard screws and plugs sufficient and how much spacing is required?

Thanks

Chris

[macten]

Adhesive should be enough but I usually screw as well (I use drywall screws into studs or plugs if into blockwork.
NMP has it's own screws and polyurathane glue

[luckyman]

whats generally better to tile to, plywood or plasterboard? If you had a choice what would you prefer working with

[wetdec]

Hi All,

Just about to start tiling my bathroom with marble tiles. The room needs to be tanked as it going to be a wetroom.

The room has a stud wall which is back to the frame and a solid wall which has been taken back to the brick.

I need to prepare the walls so that they can hold the weight of the marble tiles. I have already purchased a roll of Dura WP membrane to tank the walls once ready.

Having consulted a local tiling shop they have advised that 6mm 'No More Ply' can be applied to both walls and then tanked.

Does anyone have experience with this type of backer board?

Is 6mm strong enough to hold marble tiles?

Is there a particular kind of adhesive I should use?

Would I need to use additional fixings for the solid wall, or will the adhesive be enough?

Any advice on what I should do is appreciated.

Thanks

Chris

Why not plaster board the one wall and rough the other with sand and cement why you going the expensive route ??



..

[sranners]

Im not shore but if the tile is as heavy as he is making out he might be above the recomended wight for plaster board?????

also could he not have the brick renderd?

[cgadmin23]

Thanks for your anwsers guys, they're very much appreciated.

I didn't want to use plasterboard on the stud walls as I don't think they hold the weight of the marble tiles together with the membrane and all the tile adhesive.

On the solid wall I would consider rendering it with a sand and cement mix but I've tried anything like this before and don't feel confident that I'll get a straight enough finish. Would it be cheaper to get someone into do this for me? How long would I have to leave it to dry for?

As a result I thought I'd be able to fix a tile backer board without to much trouble and should get a reasonable finish. I know this is probably not the most cost effective way to do the job, but with such limited skills I think its my only option.

Regards

Chris

[FreeD]

sand and cement needs 2 weeks to dry. You can then tile straignt onto it...make sure u get a smooth floated finish. Once dry sand and cement will hold all tiles...no need for tanking either.

No reason why u can't do it yourself if worried fix level battens to the wall at about 600 centres...render inbetween battens...once going off remove battens and fill.

PVA walls first couple of coats 50/50. water/PVA then 6:1 sand/cement + plasticiser.

[sranners]

Hi mate, you can put a rapped set render on you can tile 24 hours after its been up. It should not cost you much to get some one in to do it, just make shore their happy with rappid set.

[cgadmin23]

Thanks guys.

I may give the sand and cement rendering a go ! wish me luck.

Am I right in saying it should be 6 parts sand to 1 part cement?

What sort of sand should I use?

Regards

Chris

[whitebeam]

4-1 would be your best bet, a fine sharp sand, B&Q do a plastering sand at their bigger depots

[sranners]

sorry mate, dont know, what i do know is it will be cheaper to get some one from the start than to repair a mistake, but you sand like your prity handy. its up to you mate, just dont render a wall so bad you cant till it.

all the best.

[cgadmin23]

Thanks gents

I appreciate all the advice!

Best regards

Chris

[FreeD]

yep 6 sand 1 cement...you may want to go a bit stronger as Whitebeam says...just make sure you do the same ratio for every mix. I believe there is a render available which is fast setting and can be tiled on within 2 hours BAL Adhesives - Products - quickset render not sure of cost...do weber do one of these fast setting renders couldn't see one on there site?

take ure time with the rendering do it in sections and get them level as you go...end of the day does'nt matter if its patchy its all going to be covered with tiles!

[Holohana]

Hi guys,

Just to make sure your all upto speed Hardiebacker 500 will take 45kg of tile per m2.

No More Ply is circa 25kgm2. Same as skimmed plasterboard. Backer is likely enough to hold your large tiles but always check 1st.

When fixing backer 250 or 500 to render wall ensure a full coverage on the board with adhesive to fix to the wall and make sure you mechanically fixed as well.

Hope this helps boys,

Andy

[Steveo205]

I was in the same situation on a job before xmas with 1 tonne of Porcelanosa tiles. We did many tests and in the end opted to go with a good sand/cement render. Yes it took weeks to dry but it was worth it considering the weight!!!

I personally would go down the sand + cement route and have the walls trued up by a good plasterer who is able to apply the render plumb. It will help in the long run when installing the marble.

The sand + cement render will however rubbing the loose sand off lightly 1st then need 2 coats of a polymer stabilizer to bond the render surface together ready for tiling. That will just take a few hours to dry .

IMO I would forget NMP or Backerboard and go the pro plastered render route.

What size are the marble tiles you are thinking of using? What is the total weight of your bathroom wall tiles?

[Steveo205]

As for a tile adhesive, I used Butec One Flex adhesive.