Stain from caulk

I prefer to use a joint filler like Gyproc Easi Fill for filling joint gap in linning paper.
Would think Zinsser BIN will be better than Bullseye 123, our painter Astra is the expert here.

 

I would think just the streaks,but I'm not a decorator, Astra is the expert here.

 

You may also find that it's not just a stain from the caulk but if the caulk has been smeared across the 1mm gap, and not sufficiently wiped off, it actually changes the texture of the light ing paper and this can show through the paint

If you look closely at the paper, it has a slight texture
Where the joints have been filled, look at the paper either side. It may be a lot smoother ?

When you either sand the filler or wipe down the caulk, it can leave a narrow band that has a different texture to the rest of the paper

This can show through the paint a bit like a shadow. You don't usually sand down caulk, more a wipe over with a damp cloth

Have you maybe damaged the paper whilst sanding

 

It's a tough one to remedy and depends on how damaged the paper is, post a couple of pictures would be helpful

Must have been troublesome to sand down the caulk ? Cheap caulk or not, it don't like being sanded as has a rubbery texture when set

Only thing I can suggest is rollering the complete walls again but using a heavy pile roller, this will give more texture to the finished paint and 'may' help to disguise the seams but, I think a test patch on 1 section first would be wise

Anyway, post some pics, may help

 

I would strip off and re-do, caulk has it's uses but not for filling wallpaper seams, as KIAB has said Gyproc Easi Fill is the way to go lightly sanded to get the flatness back then a light coat over the filler with Zinsser Bullseye 123 ready for the emulsion finish.

 

Didn't know you could rub down caulk!!! I would strip it and replace . Learning curve!!!

 

.....or put another layer of lining paper over the top, over-lapping the seams.

 

Hi. Seems like i have the same problem/question...these responses have been useful.
Looks like I was just too messy with the caulk, the pale coloured contract matt paint just highlights where it's over the joints on on the edges of my WallRock.

Anyway... looks like I need to paper over.
Unless theres a type of paint CAN cover this kind of imperfection?
Assuming not or previous post would have mentioned it.

So Q2 - I can just paste paper up over the painted liner...without needing to strip back?

 

What paper have you used ?

Wallrock Thermal Liner perhaps ?

As you may know, the instructions recomend papering over the Thermal Liner with Wallrock Fibre Liner (no surprise that they recomend their own product here)

I’ve used the Thermal Liner a couple of times and have papered over using 1400 grade ‘regular’ lining paper, with no problems

As above, fill any gaps with powdered filler and lightly sand, not caulk

 

Yes, but sand over the paint first to improve adhesion, also applying a size coat prior to hanging paper would also help. If I remember correctly Wallrock use the 'paste the wall' paste as the filler!

 

Thanks for your quick reply... it was called "Erfurt WallRock Fibreliner" ...not thermal, just to smooth out a load of bad plaster repairs before painting.

 

Oh right the Wallrock Fibreliner uv used

Dunno in that case, never used it myself but seen excellent reviews of the product

Is the caulk showing through the paint as lumpy and a differant texture or just simply a colour band

If the later, paint the wall with 1 or 2 coats of Zinnser Cover Stain and this will give a solid white surface to emuslion over

Yep the cover stain is solvent based and stinks so ventilate the room and plan on not using it that day

 

whilst you can see it's a different texture when u look close, and obviously has different absorbancies to the Fibre Liner, it's more that it's showing through as a darker colour.... i might have a look at that Coverstain...certainly easier than re-papering the whole lot.

cheers again

 

You can’t sand caulk!