Browse Forums Building A New House Re: Colorbond cost vs Roof Tiles? 14Apr 24, 2007 8:46 pm Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. Re: Colorbond cost vs Roof Tiles? 18May 30, 2009 11:39 am 31231 Tiles are a poor choice for roof as regards cooling properties because they are heavy (have a high thermal mass). In winter timee there is a lot less energy to be gained during winter months In short, its better to go for a lighter weight (low thermal mass) roof such as a metal roof over a tile. Just like an esky, you want the thermal mass INSIDE the insulation (ie inside the house envelope, not outside it). Your argument is sound. Thermal mass outside the insulation layer has little thermal benefit in temperate climates. However, thick exterior mass is beneficial in hot-arid (desert) climates with significant diurnal variation. If you have foil underneath the tiles, then the roof temperature won't make much of a difference to your ceiling temperature. Other eco-issues are complex. Terracotta, concrete and steel all have embodied energy considerations. Tiles can be replaced piecemeal. Steel require whole sheets to be changed. Tiles are heavier and require stronger trusses and more construction material. Both can be recycled in different ways. Your house roof does not show rusting other than some surface rust on the flashings. In my opinion you dont need to replace or paint the roof other than treat surface rust… 1 10181 You should pressure clean your roof first and make sure the paint you buy also is anti mould. 4 17655 Do you have solar on the roof, because if its not a laying defect it looks almost like someone has been walking all over the roof in the mid section of the tile (weakest… 2 1906 |