Skim stripes

[LTJ]

When I finish the wall they’re always trowelled down enough not to be felt and never show through when decorated, when I give the skim a flatten it looks great but after the first wet small ones some show through but only in some places, could this mean I’m introducing water just a bit too early? I also notice it more if I end up using the same gear to second coat, could this cause them? Could letting the first coat pull in more help

 

[Stewie03]

You on about blisters on your wall

 

[Monkey Boy]

Water added later changes crystallisation process so shows up as different colours

 

[LTJ]

You on about blisters on your wall

They’re like small ripples but I can’t see them after my flatten, only my first wet

 

[Retired Spread]

 

[Cockney]

 

[Damian plasterer]

View attachment 61251

It's the eye of the tiger

 

[SmoothCriminal]

Could be a combination of timing an trowel angle. Both play a vital part in this corona virus pandemic an we MUST protect ourself at ALL costs.

 

[John j]

They’re like small ripples but I can’t see them after my flatten, only my first wet

Try hitting it when it's a touch softer with less water

 

[Rossi46]

Too cold, too soon, too wet.

 

[Casper]

it’s all in the wrist. You need a strong wrist to trowel those lines out

 

[Casper]

Wait until it’s almost set then cross trowel. Errrrrrrrr. Help me out here Rossi boy

 

[Rossi46]

Wait until it’s almost set then cross trowel. Errrrrrrrr. Help me out here Rossi boy

It’s being trowelled too soon or the skim is a bit heavier. Don’t get many of these issues in summer when it’s setting well.

 

[Casper]

I reckon it’s background.

 

[Casper]

If it was gritted there would be zero stripes. I’d put money on it!!

 

[John j]

It’s being trowelled too soon or the skim is a bit heavier. Don’t get many of these issues in summer when it’s setting well.

Or on high suction back grounds

 

[paulf]

it’s all in the wrist. You need a strong wrist to trowel those lines out

 

[Casper]

I’m joking obviously. Grit the background first then see the difference. Voila!!!!

 

[Rossi46]

I’m joking obviously. Grit the background first then see the difference. Voila!!!!

It happens on board Casper. Ain’t no crazy fool gritting board

 

[Casper]

PVA it. I always do it on board.

 

[Rossi46]

PVA it. I always do it on board.

Now i know you're taking the piss

 

[John j]

Now i know you're taking the piss

He.s.allways taking.piss

 

[Casper]

Are you seriously telling ME you’ve never PVA’d board?

 

[paulf]

Are you seriously telling ME you’ve never PVA’d board?

On old board yes.

 

[Casper]

Excactly! If you arrive on a job and the board is on who’s to say how old or dry it is? Apart from the obvious it can still do with a coat of glue.

 

[paulf]

Excactly! If you arrive on a job and the board is on who’s to say how old or dry it is? Apart from the obvious it can still do with a coat of glue.

On older properties or newish board thats been up for a while a weak coat pve won't do any harm.
New board pointless.

 

[Stewie03]

Doesn't matter what you skim over if you hit the set to early with water your going to get problems and going over grit is no different,I find the plaster hangs to f**k over grit anyway

 

[Casper]

Even new board can be deceiving . Depends where it’s been stored. Too many variables.

 

[The Apprentice]

Close the face of your trowel in soon as you see them.

 

[Casper]

Luckily I’ve never seen a stripe but I’ll try the face thing if it ever happens. Cheers.

 

[Nash plastering]

When I finish the wall they’re always trowelled down enough not to be felt and never show through when decorated, when I give the skim a flatten it looks great but after the first wet small ones some show through but only in some places, could this mean I’m introducing water just a bit too early? I also notice it more if I end up using the same gear to second coat, could this cause them? Could letting the first coat pull in more help

Sometimes when using same gear for 2nd coat, if your timings off slightly you run risk of dragging the plaster over the 1st, so basically your putting 1 thick coat of skim on which causes issues.

 

[Cockney]

Sometimes when using same gear for 2nd coat, if your timings off slightly you run risk of dragging the plaster over the 1st, so basically your putting 1 thick coat of skim on which causes issues.

For me personally There’s no such thing as 2 coating with the same mix.

 

[John j]

For me personally There’s no such thing as 2 coating with the same mix.

Let's not.open that can of worms again

 

[Cockney]

Let's not.open that can of worms again