Multiple cracks on walls in house

I would recommend you take back to brick as it sounds like the old plaster has blown. So you’ll just end up with cracks reappear in the future

Your best bet is to take it back to brick. It usually means the walls are old and have blown from the brickwork. Of course the price of materials / labour nearly doubles but there are other suggestions but are not as effective. You could look at chopping out the loose bits and bond/ hardwall it back, render mesh your walls, this could work however it is not a guaranteed fix, this is more of a risk of cracks coming back. It comes down to budget and what you plan on doing with the property.

Would be best to inspect the job. Back to brick is an option, but there's other options as well. Good luck with your project.

Back to brick is best if the existing backing plaster is the original from the house build before 1970

Your Options: 1. Cheaper Fix: You may be able to get away with just removing the areas that sound hollow, then bonding and skimming. Scrim over the smaller crack as well. However, you won’t know the full extent of the damage until you start taking off the loose sections — more may come away as you go, and you could end up having to go back to brick. 2. Best Option: The most reliable approach would be to go back to brick and re-board the wall. This will give you the opportunity to get the surface nice and level and greatly reduce the chance of any future cracking.

I would suggest areas of plaster that sound hollow would need to be taken back to the brick also other areas that seem solid and just have hairline cracks could be a sign of shrinkage which could be sorted by fibre tape if you are re skimming the walls otherwise rake out the hairline cracks and use a filler would be fine.

Dot and dab Gypliner system Battens

Yes you will need to chip of all hollow areas back to block work

I think if we applied coat bonding on hollow areas then apply multi finish it will be perfect.

Hi there, It really depends on the condition of the existing plaster. If most of the walls are hollow and the plaster is coming loose from the brickwork, then taking it back to brick is usually the best long-term solution – otherwise, any skim on top may not last and cracks will return. However, if the cracks are only hairline and the plaster is still sound and well bonded, then a repair and skim would be enough. The best way forward is to open up a small section to see how solid the backing is. From there, you can decide whether to go back to brick or just skim. I’d be happy to take a look and give you proper advice on site. Best regards, Medrik