Hairline cracks in walls

bamblolo

Hi i have some hairline cracks in walls, I want to paint these but am worried the cracks will show through after i have painted. Is there anything i can do to seal them up . I did try polyfilla but it ended up looking like a big horrible scab on the wall! Is there something i could paint on? Thanks for your help.

evilgoose

I think polyfilla do something which you roller onto the whole wall, rather than just the paste you fill the cracks with.
I'll see if I can find a link.

http://www.polycell.co.uk/products/polycell_smoothover_your_damaged_walls.html

ginvzt

Isn't there a dulux paint that is supposed to cover cracks like that as it stretches over it. I am sure I saw it last spring when I was painting my house. Can't remember how was it called though!!!!

KLB

Does anyone know when does a crack in the wall becomes something to worry about? We have a crack upstairs that's wider than a hairline, probably about 1-2mm in width. We noticed it a few years ago and it hasn't grown or changed since. It's behind all our clothes hanging up so we don't see it on a day to day basis and don't think about it much. Thanks.

bamblolo

thanks evil goose checked out polycell website and they now have a polystick just for hairline cracks. Its a new product . Thanks again

Ionkontrol

Just fill the cracks with polyfilla, then sand before painting.

MoneyTown

Very fine cracks are hard to fill because if they move only slightly they may double or triple in width in places. Fillers can't stretch by that much so the cracks will eventually re-appear.

Get something like a screwdriver-end and drag it along the fine cracks to widen them out. If you do this before filling, the filler won't have to stretch as much if there is movement and this should stop the cracks re-occuring.