Laying stick down vinyl planks

[Robbox]

In the bathroom I am going to lay ply over the floorboards, then adhesive for vinyl planks. Are there any points to watch out for (never done this before). I have laid click-lock type flooring and it seems to me the only difference is the adhesive. I imagine the planks need to be carefully butted together, I imagine the adhesive is not instant and allows a bit of reposition time.
With the ply, is 6mm minimum and maybe if floorboards are very uneven 9mm would be better. What to do about seams with the ply sheet? Are ribbed nails better than screws?
Thanks.

 

[dazlight]

6mm or 9mm plywood. I’d ring nail it or screw and counter sink the screws.
Then feather finish screed.
Then cut it all in dry and glue it with the correct adhesive like Uzin KE66 or 2000s.

 

[Robbox]

Hi Daz, is the feather finish screed necessary if the ply is sufficiently flat. I know manufacturers quote things like 2mm deviance across a meter.
Does the feather screed cover the whole surface or just the low parts?

 

[dazlight]

It’s mainly for the joints in the plywood so they don’t show through at a later date

 

[Robbox]

We have decided to use click-lock vinyl plank. The cost is fairly equal once you account for adhesive etc.

 

[Carpenters daughter]

It’s mainly for the joints in the plywood so they don’t show through at a later date

Sorry just jumping on this thread as I have just finished feathering the joints in ply sheets in the kitchen. It was very flat so did not completely screed the whole floor. We are laying luxury vinyl tiles with Laybond Vinyl adhesive but I cannot work out if the ply needs priming before the adhesive goes on. Any advice?

 

[dazlight]

If the ply is new and clean they no. If dusty vac off and prime 4-1

 

[Carpenters daughter]

Thanks Dazlight. Ply is brand new and clean

 

[dazlight]

Sand down the feather mate with a electric sander / mutli tool to get it super smooth.

 

[Carpenters daughter]

Will do. Repeat of what we've done in the bathroom with vinyl sheet. Nothing showing showing through that so going to do same

 

[opps]

I agree with Dazlight.

A belt sander is the quickest way to remove the step in levels between the boards.

I an not a floorer, I am a decorator but I have worked in loads of houses where I can see every join in the plywood under the vinyl strip flooring. Although it offends my sensibilities I bite my tongue. If the client doesn't notice it, me highlighting does nobody any favours.

 

[opps]

I cannot work out if the ply needs priming before the adhesive goes on.

We have recently had flooring work done at home. Our previous floor was Amtico. The guys who laid it didn't bother using primer. To be fair, none of the flooring lifted over the 15 years. It does however come up very easily and without damaging the plywood surface. Their tardiness has worked in our favour...