CRACKED PLASTER

[TEAK36]

I have recently had a new conservatory built and am having a problem with one of the walls.The wall in question is the what was the external wall at the rear of the house.This wall did have a 'pebbledashed' surface,but this was plastered over and was also skimmed.I used a base coat prior to final painting,but after a few days some small cracks appeared in the wall.The plasrer stripped the plaster from the wall and re plastered and skimmed.I put on a new base coat and final paint coat,but the cracks appeared again.I have tried numerous product which are supposed to cover cracks,but none of them have worked.Does anyone know of a product that I can use to sort this out?I think it will need to have some flexibility because I think the cracks keep appearing becase the house is quite old.

[2nd row]

   teak36........... dont know if your problem coul be , that after all,any new building work, it must be given time to settle, not only in old buidings, but new ones too,...... as it 'settles ' cracks can and do appear.....these cracks can then be filled in,, the plasterer should have told you how long to wait, before any painting takes place....... dont know ' your waiting time period '.....? but do not waste money or your time til them cracks are filled in...... plenty of good strong fillers out there...

[TEAK36]

Thanks for your answer 2nd row.I have now worked out what the cause of the cracks are,they are happening because of the temperature.This morning when it was freezing cold,the cracks were quite visible,but now that the weather is a bit warmer and I have turned the heating on,the cracks are much less visible.I still have absolutely no idea what to do about it,but at least I know the cause.There must be a product out there that has the flexibility to expand when the temperature changes.

[richfo]

Try leaving it for a few months before you do anything, as then you will be certain it has dried out fully. Also I wonder if there is any relationship in the two ages of the old wall & new plaster re-acting differently to hot & cold? 

[ianess]

If all else fails and your patience expires before you do you may want to consider strapping the old exterior wall and using plasterboard to give yourself virtually a new cavity wall. You`ll lose about 10cm or maybe less in overall width but you probably wouldn`t notice. As long as it`s secure from the elements and well ventilated you`ll be OK.