The main purpose of standard cornice or ‘cove cornice’ is to disguise the unsightly joints between your walls and roof. While standard cornice is often thought to be decorative in nature, it does have a functional use; Often gaps are left between the plasterboards and timber framing to allow for expansion and contraction of the wood, if these gaps are left exposed it may lead to the plasterboard cracking. The application of cornice helps minimise the risk of cracking for both the interior and exterior of one’s home.