how do i stop cracks apearing in my plastered walls?

Question

i am learning to plaster . i do pva my walls first

Answer 1

often the plaster can be saved. Firm plaster that has popped off the lath should be reattached with plaster washers and drywall screws. After removing areas that are crumbling, patch holes with two coats of lime putty sandwiched around a reinforcing layer of fiberglass mesh tape. Trowel on the patch in two layers: a fill coat and a thin final coat that blends in with the surface of the wall.

Shallow patches can be primed with a latex primer after a few hours, but allow the wall to dry overnight if the patch is deep or you're using an alkyd primer. Repeat on all damaged areas before reaching for your paintbrush.
if you are getting alot of cracks try adding less water to your plaster mix or making several thinner coats as opposed to one thick coat

Answer 2

Not always possible - shrinks when dries - certain walls pull the water out very quickly which adds to the cracking - I was told once that adding washing up liquid helps to smooth it out and aids the drying process to stop the cracking but I don't know if it works or not to be honest - it does make the plaster go on easier and smoother!

I just usually let mine dry out for a week or two and then skim some filler or Artes into the cracks - in the corners I usually put some decorators caulk to cover the cracks - but that is only cheating at home DIY use!

Answer 3

Are you using the correct PVA to water mix? The plaster should not crack that much when it is left to dry with out forcing. You can save it by waiting until the plaster has all but gone off and then use a spray bottle with water and float to give a smooth finish.

Answer 4

Usesually this is caused by applying too thick a coat of finishing plaster
Cracks in plaster are cursed by drying out and the plaster shrinking.
First plaster the wall with thistle bonding plaster, wait till it is almost dry then apply a thin coat of Fimishing plater this should help eleviate cracks

Answer 5

There is a product on the market called Good Bye Cracks-- made by Goof Off. After repairng the crack with plaster or joint compound you spray this stuff over the repair-- 2 coats. It's elastic and stretches if there is some movement in your wall. I repaired a crack in my wall a year ago and so far no more crack-- good luck

Answer 6

Cracks on walls are a sure sign of stress.

Horizontal cracks signal dangerous stressors that need the attention of a building engineer as the strength integrity is at stake.

Vertical cracks may indicate watermoisture behind the wall or masonry weakness.

Don't cover it up before checking.
Good Luck

Answer 7

I have cracks in my walls from plaster but its about a year old someone told me they were just settling cracks, just needs re-painting, and a little filling.

Answer 8

are you applying the plaster to thinly?

Answer 9

PVA PVA PVA it's a must!

Answer 10

Turn your central heating down.