Sometimes in North QLD Australia there are some huge winds and rainy weather. We found that if just expandable container house single body in the property,the lifetime of single house will be short. So after customer pay for the extra roof&balcony&cladding system. It will provide some very useful protection for the house. The weight&lifetime of house will increase after installing those materials. And we found that in Australia if customer want buy&install them in local is very expensive. So we provide for yours with a full package.