Best flexible filler for walls and ceilings?

[Sprocker]

Hi all
With your experience what's the best flexible filler to fill long thin cracks in a lath and plaster ceiling and also long cracks on the walls
I've got to decorate my bedroom and there's hairline cracks everywhere!
Thanks in advance

 

[blup]

Polyfilla advance is supposed to be good, it can be sanded, but you might need to open up the crack a little.

If the original source of the movement remains the cracks could still reappear.

Blup

 

[Sprocker]

Thanks blub
The cracking is due to plaster blown in areas
I've used decorators chaulk in the past but not too great to paint over
Cheers

 

[blup]

Caulk can leave a sheen which shows through paint unless primed.

Blup

 

[Sprocker]

Ok thanks do you Think polycell should be ok to use If the plaster is blown slightly in places?
Thanks

 

[blup]

On Lath and plaster small repairs I have successfully used ronseal filler
https://www.screwfix.com/p/ronseal-...VzbvtCh1XVA69EAQYAiABEgLb0fD_BwE&gclsrc=aw.ds

Blup

 

[opps]

I use Toupret Fibacryl.

http://www.toupret.co.uk/business-customers/products/specialist-solutions/fibacryl-FIBACP01G.html

I purchase the version in a caulking tube. First I brush PVA in to the gap in the hope of "locking" the loose plaster. I then squirt the toupret in to the gap. Smooth if off with a filling knife and then wait for it to shrink back. It is like caulk with tiny fibres, it will shrink back a lot. Deep cracks I leave for a couple of days. I then over fill with Toupret Redlite and sand flat.

I have only been using the Fibacryl for a couple of years but I have been happy with it thus far. Previously I used their powdered filler with fibres and was unimpressed when it hairline cracks appeared after a couple of months. I think they may have discontinued that version, I can't find it on their site anymore.

 

[gc1967]

Polyfilla is dreadful stuff now it was good when I started as a Painter and Decorator 33 years ago, now when you fill with it , it feels like rubbing down tile adhesive, like above Toupret is fantastic, not cheap but you get what you pay for