Cracks in chimney breast ground floor

[Annabelannabel]

I have recently moved into a middle terraced house built 1890’s. When stripping the vinyl wallpaper in the downstairs living room these cracks in the plaster were revealed on the chimney breast (no cracks anywhere else so far). The chimney breast is very damp- I have got a new damp proof course installed last week. Are these cracks worrying ? Could it be subsidence ? I had a level 3 survey before purchasing. No cracks on the render outside

 

[foxhole]

Cracks are minor and probably due to damp chimney drying and getting wet causing shrinkage cracks . Damp proofing was probllably totally unnecessary. More likely you’ve got a problem on the roof and no ventilation in the chimney which would’ve cured the damn problem.

 

[Annabelannabel]

Thankyou - How can I ventilate the chimney ?

 

[Harry Bloomfield]

Thankyou - How can I ventilate the chimney ?

A hit and miss vent at the bottom, where the fireplace was, and a vented chimney cap on top.