We had engineering timber flooring installed throughout the house. We were assured that we would get skilled installation. 3 months after installation; at least 3 different parts of the floor board started rising. We contacted Erco floor who came back to have a look they then said they would get the supplier to come back and have a look. Saying it was a material issue not installation problem. We waited and eventually Erco said the supplier had to come from interstate and to date they haven't rectify the problem. The warranty for installation has now lapsed. Erco had made no attempt in fixing the floor boards which rises during winter when it rains.