We would like timber decks to our verandahs and alfresco areas, instead of using concrete or brick paving. Can we do this if our house has a concrete slab on ground floor?
Yes, with the popularity of timber decks in recent years, this is a common change. We need to know where you want the decks, so we can thicken the concrete footing in that area. Then it is a simple matter of digging the sand away from the face of the footing, allowing enough depth for the deck bearers and joists to be installed. If your site has a slope, the slope can be utilized to build the deck on elevated stumps, which can give the appearance of the whole house being on stumps. An example is pictured below. Click to enlarge.