Mansard Roof Insulation

I recently purchased a home with a mansard roof i had some roofers come to give quotes to replace the top it is finished and they all recommend adding ventilation known issue with mansard s.

Mansard roof insulation.

Step 1 add a vapor barrier. One strategy would be to incorporate the attic into the conditioned space and then use a sandwich of barriers and insulation under a furred vented. The illustration to the right shows the proper insulation of this style of roof. After having dense pack installed in the building walls the mansard is the next target.

The steep roof with windows creates an additional floor of habitable space a garret and reduces the overall height of the roof for a given number of. But what materials should be used to save energy on this type of house. I have a house with mansard roof in boston. To insulate the roof you will need to use a combination of insulation to fully protect the roof.

So now i m thinking about just insulating the little attic which is formed by the low sloped part of the. Originally i was toying with the idea of closed cell spray foam for the whole mansard floor but i do not want to tear down historic plaster. If the attic space remains uninhabited the air in the under roof space serves as a good thermal insulation along with the insulation of the floor. In the case of the attic this is not at all the case.

This barrier may not be fitted to an older home and you should consider getting a contractor. Here the insulation is very close to the roofing material and the task is not.