Stupid question re. stopping screed from going everywhere!

[jw80]

I'm currently trying to refurb our ensuite (so far so good!) and have just laid 9mm ply on which we want to put Karndean down. I'm following the very helpful advice on mattysupra's sticky about levelling floors but i'm a bit confused about the f-ball screed. Judging by posts and a video i've seen it's pretty runny stuff so how do I stop it from going everywhere I don't want, such as down the gaps around the pipes and at the edges where the wall plaster doesn't meet the floor flush. I'm sure it's obvious but I seem to be missing it!

Cheers in advance

Jamie[/b]

 

[mikeey84]

The 2 methods I have used are:
Bit of 2x2 in doorways, under the bath etc, this acts a dam. I have sticked it down with a couple of blobs of glue and then knocked it off with a hammer (or in case of under the bath, i left it there). Best to run a stanley down it first before removing so it doesnt take a massive bit of screed with it.

For tricky little areas, I have used a line of silicon, the same height as the screed. If you use the translucent kind and are careful, it really isnt noticable, as its a bugger to try and remove afterwards, so i left it there!

 

[kjacko]

In my limited experience with laying karndean (35sqm) i never used screed.
Once the ply was down i used featheredge to fill and soften the joints, then laid the planks on that using karndeans proper adhesive.
Unless your floor is uneven, and surely the ply takes care of that, then why bother?
This advice came to me from a karndean fitter who was no longer indoctrinated into doing what karndean demands (and the consumer pays for). So i didn't use it on mine.

More cost, more time doesn't necessarily equal better job.

Just my opinion.

 

[dazlight]

In my limited experience with laying karndean (35sqm) i never used screed.
Once the ply was down i used featheredge to fill and soften the joints, then laid the planks on that using karndeans proper adhesive.
Unless your floor is uneven, and surely the ply takes care of that, then why bother?
This advice came to me from a karndean fitter who was no longer indoctrinated into doing what karndean demands (and the consumer pays for). So i didn't use it on mine.

More cost, more time doesn't necessarily equal better job.

Just my opinion.

You are spot on mate.
Unless the plywood is all bumpy then feather finish will do. Make sure ply is screwed or ring nailed every 6" an every 4" on the perimeter of each board.

 

[jw80]

Hi all, cheers for your replies. I think I'm just going to go for the feather finish as it's easier and more importantly cheaper! Will let you know how it goes