Mansard Roof Ventilation Details

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.

Mansard roof ventilation details. Airtrak assists specifiers builders and specialist contractors in helping them to meet the requirements of the building regulations in relation to the important issue of roof void ventilation and the control of condensation. Well what you re dealing with is no different challenge wise than a commercial flat roof and i d suggest reading up on flat roofs and parapets to deal with it. Airtrak is a proprietary range of ventilators designed specifically for the ventilation of roof voids. Supreme sloped roof ventilator model 301.

Mansard roof vent alcor. As to that pesky flat as a pancake middle. More details about this approach can be found in this piece from the building science corporation and in particular figure 3. 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.

However unlike a traditional mansard roof these roofs had a flat top. Mansard roof was not used quite as often in traditional homes despite it was featured in many high rise residential buildings especially in the late 1960s and 1970s. Custom manufacturing shapes and sizes. So now i m thinking about just insulating the little attic which is formed by the low sloped part of the.

I have a house with mansard roof in boston. 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.