Changing Roof Depending On Weather


We all know that dark object absorb heat while white one reflect them.  This presents an issue when it comes to a roof on a house.  But what if you could have you cake and eat it too?  This new material will change color, from white to black and back again, depending on the temperature.  You can have a white roof during the summer and a black one during the winter!  This could do wonders for your heating and cooling costs.

When the polymer phase separates from the gel, the solution becomes a mixture of polymer and solvent and because the polymer and solvent have different refractive indices the mixture becomes strongly scattering (white colored). When the mixture cools below the transition temperature the polymer re-dissolves in the liquid and the solution is clear and colorless. The pictures below illustrate the change in color when the tile is subjected to hot and cold temperatures.


This technology recently took first place in a competition, the school that won?  MIT.  Check the full story here

  1. One thing to keep in mind is that a black roof also releases heat better than a white one. Ideally, the roof would be black at night in the summer to allow heat to flow out and in the winter you would want the roof to be white at night to retain more of the heat gained during the day.

  2. We always choose metal roofing instead of ceramic roofing because we believe that metal roofs last longer.:;-

  3. the weather these days is hotter than the previous decades, i guess it is the effect of global warming`;”

  4. I was very pleased to find wanted to thanks for your time for this wonderful read!! I definitely enjoying every little bit of it and I have you bookmarked to check out new stuff you blog post.

Leave a Reply