Hi all,

I've been adding to my newly-decorated flat with a projector screen
painted on the wall (http://www.goosystems.co.uk). I'm not an
experienced decorator (as you'll see .

All was fine until I painted the black border. I was a bit haphazard,
and there are a few splatters / drips of black on my matt mocha wall
and gloss white skirting board! I've left it to dry rather than trying
to get fancy while it's wet.

What's the best way to rectify? Just get a really small brush and
paint over the black bits? Sand the black bits? Both? What about
trying to scrape them off with a Stanley blade?

Also, when I removed some of the masking tape, a very small amount of
paint was lifted but stayed attached to the wall - can I just
overpaint it or do I have to scrape any paint that has been lifted off?

Antony

wrote:
Hi all,

I've been adding to my newly-decorated flat with a projector screen
painted on the wall (http://www.goosystems.co.uk). I'm not an
experienced decorator (as you'll see .

All was fine until I painted the black border. I was a bit haphazard,
and there are a few splatters / drips of black on my matt mocha wall
and gloss white skirting board! I've left it to dry rather than trying
to get fancy while it's wet.

What's the best way to rectify? Just get a really small brush and
paint over the black bits? Sand the black bits? Both? What about
trying to scrape them off with a Stanley blade?

What sort of paint is the black stuff? oil/water based?

How recently was the redecorating done - do you have any of the mocha
stuff left over?

Dvaid

Lobster wrote:
wrote:
Hi all,

I've been adding to my newly-decorated flat with a projector screen
painted on the wall (http://www.goosystems.co.uk). I'm not an
experienced decorator (as you'll see .

All was fine until I painted the black border. I was a bit haphazard,
and there are a few splatters / drips of black on my matt mocha wall
and gloss white skirting board! I've left it to dry rather than trying
to get fancy while it's wet.

What's the best way to rectify? Just get a really small brush and
paint over the black bits? Sand the black bits? Both? What about
trying to scrape them off with a Stanley blade?

What sort of paint is the black stuff? oil/water based?

Not sure, it's Ultra Black as at:
http://www.goosystems.co.uk/products.php

Is there any way I can find out?


How recently was the redecorating done - do you have any of the mocha
stuff left over?

Very, and I sure do.

wrote:
Lobster wrote:
wrote:
Hi all,

I've been adding to my newly-decorated flat with a projector screen
painted on the wall (http://www.goosystems.co.uk). I'm not an
experienced decorator (as you'll see .

All was fine until I painted the black border. I was a bit haphazard,
and there are a few splatters / drips of black on my matt mocha wall
and gloss white skirting board! I've left it to dry rather than trying
to get fancy while it's wet.

What's the best way to rectify? Just get a really small brush and
paint over the black bits? Sand the black bits? Both? What about
trying to scrape them off with a Stanley blade?
What sort of paint is the black stuff? oil/water based?

Not sure, it's Ultra Black as at:
http://www.goosystems.co.uk/products.php

Well, did the instructions say to clean your brush in water or turps?
Whether it's oil- or water-based might help with deciding how to proceed...

Is there any way I can find out?
How recently was the redecorating done - do you have any of the mocha
stuff left over?

Very, and I sure do.

....howewver, the above being the case, I'd say your solution is a
no-brainer, just paint over it. As the decorating is recent, and you
have more paint from the same batch, there shouldn't be any evidence of
a junction between the old and the new... if they are chunky dry drips
of black paint then you'd want to sand them flat first, otherwise
they'll still show through. And try to 'feather' the edge of the area
you paint rather than make a definite edge - will help make it less visible.

David

Lobster wrote:
wrote:
Lobster wrote:
What sort of paint is the black stuff? oil/water based?

Not sure, it's Ultra Black as at:
http://www.goosystems.co.uk/products.php

Well, did the instructions say to clean your brush in water or turps?
Whether it's oil- or water-based might help with deciding how to proceed...

They didn't say. However I can report that the foam applicator for the
black paint gets clean under a running tap.


Is there any way I can find out?
How recently was the redecorating done - do you have any of the mocha
stuff left over?

Very, and I sure do.

...howewver, the above being the case, I'd say your solution is a
no-brainer, just paint over it. As the decorating is recent, and you
have more paint from the same batch, there shouldn't be any evidence of
a junction between the old and the new... if they are chunky dry drips
of black paint then you'd want to sand them flat first, otherwise
they'll still show through. And try to 'feather' the edge of the area
you paint rather than make a definite edge - will help make it less visible.

A no-brainer is just what I'm looking for. I've already sanded some of
the black off, I took my time, and I managed to disturb minimal good
paint. I was careful (for me) - I started with 400 grit, but it took
ages, and I was unimpressed. The 40 grit shifted it. I suppose the
medium grades are more for when you sand the paint without removing it
all!

Out of interest, what difference would oil or water have made in the
other case?

wrote:
Lobster wrote:
wrote:
Lobster wrote:
What sort of paint is the black stuff? oil/water based?
Not sure, it's Ultra Black as at:
http://www.goosystems.co.uk/products.php
Well, did the instructions say to clean your brush in water or turps?
Whether it's oil- or water-based might help with deciding how to proceed...

They didn't say. However I can report that the foam applicator for the
black paint gets clean under a running tap.

Is there any way I can find out?
How recently was the redecorating done - do you have any of the mocha
stuff left over?
Very, and I sure do.
...howewver, the above being the case, I'd say your solution is a
no-brainer, just paint over it. As the decorating is recent, and you
have more paint from the same batch, there shouldn't be any evidence of
a junction between the old and the new... if they are chunky dry drips
of black paint then you'd want to sand them flat first, otherwise
they'll still show through. And try to 'feather' the edge of the area
you paint rather than make a definite edge - will help make it less visible.

A no-brainer is just what I'm looking for. I've already sanded some of
the black off, I took my time, and I managed to disturb minimal good
paint. I was careful (for me) - I started with 400 grit, but it took
ages, and I was unimpressed. The 40 grit shifted it. I suppose the
medium grades are more for when you sand the paint without removing it
all!

The idea with any sanding work is to start with the coarsest grade you
need, and then to work up (down?) through the grades until you get to
the desired level of finish.

Out of interest, what difference would oil or water have made in the
other case?

Well TBH probably not a hell of a lot once the paint was completely dry
and cured; I was just looking for more info at the outset and if you
hadn't had the right paint in stock it might have been worth trying
something using the appropriate solvent?

David

Lobster wrote:

The idea with any sanding work is to start with the coarsest grade you
need, and then to work up (down?) through the grades until you get to
the desired level of finish.

I've settled on the 80 grit for removing the offending black paint
marks. The 40 was too coarse, and the 80 is much better for this
delicate task. In practice, is the finish left by the 80 good enough
to paint on? It feels pretty smooth to me. I've only been sanding to
remove paint - the surface was fine before.

As an aside (and here I'm really showing how little I know about
decorating), the original was applied with a roller. If I touch up
with a brush, will it look obvious, or will it blend in relatively
well? The drips I'm touching up are around 5mm wide, so I'm not keen
to use a roller - seems like overkill.

Antony