How long does plaster last?

Question

Got a house with plaster that's probably 50+ years old in some rooms. At what point does plaster genuinely need to come off and be replaced, versus just being skimmed over?

Willie · Answer

If plaster is tight to the whole wall surface, then leave as is. Or you could get it lightly skimmed if u want but why spend cash when there’s no need you will probably paint or decorate wall at some point 👍

Izmir · Answer

Plaster lasts 15-20 years in average though that depends on climate

Kirsty · Answer

If the plaster is severely cracking, bowing or crumbling. Depending on the areas of the walls, have there been damp or any movement within the house, through weather.

Tom · Answer

It does not matter, skimming or repair the wall where it’s necessary. 
The wall should be fine.

Paul · Answer

You only generally need to change plaster when it’s structurally faulty. Plaster can last up to years and sometimes even longer if kept well.

Tony · Answer

Hi. 
If the plaster hasn’t got cracks in it then leave it. It might only need a surface fill in places. If it’s popped in certain places then just tap them out and fill the affected area.

Adeyinka · Answer

no need as long as no damage could be there for almost 100+

Andrii · Answer

Applied interior wall plaster typically lasts fiteen to thirty years, though traditional lath-and-plaster in historical homes can endure for fifty to hundred years. Its lifespan primarily depends on environmental moisture, natural building settling, and the quality of the initial application.
Watch for these key indicators that your plaster is failing and needs repair or replacement:
Hollow sounds: Tapping the wall yields a hollow, echoing sound, indicating the plaster has detached from the wall beneath.Extensive cracking: Deep, large, or spiderweb-like cracks (rather than tiny, surface-level hairline cracks). Crumbling or flaking: Areas where the plaster is turning to powder or falling away. Dampness or mold: Soft plaster heavily damaged by water.

Paul · Answer

For a typical 1950s–1970s UK house, it's quite common to find that 80–90% of the walls can be saved with preparation and a skim coat, even if they look rough. The biggest concern isn't age—it's whether the plaster is still bonded to the wall and free from ongoing damp issues.
If you can upload a few photos of the walls (especially any cracks, bulges, or damaged areas), I can give a much better idea of whether they're candidates for skimming or need stripping back to brick.

Bogdan · Answer

The best option would be to remove all loose or peeling paint first, clean the surface thoroughly, then apply a suitable exterior masonry primer before repainting with a quality exterior paint. If moisture is present, that issue should be resolved first or the paint will continue to fail.

How long does plaster last?

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