New build, completed Sept05, internal and external cavity walls with Celcon blocks on concrete blocks below dpc - metre deep footings on sand/greensand site.
Have noticed vertical cracks externally and corresponding internally - ie cracked blocks inside and outside beneath quite large pvc casement windows. However, no diagonal cracking at the corners of windows. External rendered - internal plastered. The cracks are hairline and been refilled twice now but keep re-appearing
No cracks beneath these below DPC where Celcon meets the concrete blocked footings.
Keep being told "Just shrinkage" - but inside and outside, same locations - each about 2 metres from same corner - 3 years down the line?
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