Filled cracks showing through paint - help!

[Lucy6892]

Hi

Still on my spare bedroom decoration and I had a number of cracks and holes to fill before painting.

I used polyfilla on the holes and poly cell brush on liquid hairline crack filler for the cracks.

As you can see from the pictures despite hours of sanding a bump through the paint and a line is clearly visible. This is after sanding and two coats of paint. Any ideas as to how to improve the finish?

Many thanks in advance

Lucy

Untitled

• Lucy6892
• 2 Jul 2014
• 1

Untitled

• Lucy6892
• 2 Jul 2014
• 1

Untitled

• Lucy6892
• 2 Jul 2014
• 1

 

[JohnD]

rather than sanding, I recommend using a broad metal scraper, preferably before the filler is fully hard. It is quicker and less dusty. It helps you flatten the filler so that it is flush with the wall.

 

[Belle427]

Sadly your probably going to have to rub it down and start again.
Its better to use a filling knife and a mixable filler i find so that you can mix it a bit wetter, you can then push it in the crack and skim over with the knife.
Always better to take a few attempts with light filling rather than one big blob.