Any tried & tested recommendations please before I get fleeced for £25 for one tube of some US stuff? Our house is on clay and we’ve had a dry winter so lots of the wall to ceiling joints have cracked paint. We spent days/weeks painting last year and it’s really pissed me off. We used standard caulk and it’s cracked as it’s not flexible. Most of the flexible sealants I’ve found can’t be painted over, and the bloke in the paint shop just kept telling me I must have subsidence 