Don't get too carried away with expectations for increased housing related construction activity in the US. According to Boral CEO Mike Kane growth in US housing starts continue to come in well below his expectations at around 8%. Kane said that he had made the necessary changes in the business to cater for an increase in activity and for the moment it is a case of letting the economy kick into growth. Whilst relatively relaxed about the state of the US economy he says that investors need to appreciate the time required to generate significant inertia in an economy of that size.