Mansard Roof Insulation

After having dense pack installed in the building walls the mansard is the next target.

Mansard roof insulation.

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. I have a house with mansard roof in boston. A mansard or mansard roof also called a french roof or curb roof is a four sided gambrel style hip roof characterized by two slopes on each of its sides with the lower slope punctured by dormer windows at a steeper angle than the upper. 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.

This barrier may not be fitted to an older home and you should consider getting a contractor. Step 1 add a vapor barrier. Mansard and gambrel style roofs have always been hard to insulate. One of the best ways to protect your mansard roof from the problems of ventilation is to use a vapor barrier on the inside.

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. 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.

Here the insulation is very close to the roofing material and the task is not. So now i m thinking about just insulating the little attic which is formed by the low sloped part of the.