Graphical Construction Glossary >> Roofs and roofing. >> Mansard roof

Mansard roof
A roof that has two slopes to each side, the lower slope being much steeper. To better accommodate rooms inside the roof. A mansard has the slopes on each side, it could be related to a hip roof in this respect.
Gambrel roof.
The gambrel has two slopes to each long side, the lower slope being much steeper. To better accommodate rooms inside the roof. A gambrel has gable walls on the shorter side.
Curb is a name for the joint between the roof faces in gambrel and mansard roofs.
Curb roof
It can be a name for any of the above roofs and it can indeed be a roof with more than two roof faces to each section.
Ashlar Piece
Inside roof spaces, lofts and garrets, the short vertical pieces fixed between the floor and the rafters to form short walls. (Not to be confused with ashlar masonry).
The wall frames made by ashlar pieces.

a mansard roof
The basic mansard shape. In practice the lower slope is treated like a wall with dormer windows.

  • All of these roofs are built to provide rooms inside the roof.
  • These roofs in their original forms cut out the need for expensive masonry walls to the top floor.
  • They also managed to fit in that extra floor but with a reduced total height in places where height restrictions were applied.
  • These reasons are still valid to a certain extent today in some parts of the world.
section through mansard roof
A section through a mansard.

a gambrel roof
Gambrel roof, Again just the basic shape without the windows

If you didn't find exactly what you are looking for try this search tool that will search the site and the web.

"What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience?
Adam Smith 1723-1790

"When we build, let us think that we build for ever."John Ruskin 1819-1900

coates hire
Hire Equipment
Furniture Fittings - Architectural Hardware - Electronic Locking Systems - Technical Hardware
BuilderBill sponsorship

BuilderBill Books

building maths
Building Maths

Stair Design
asbestos ebook
Asbestos Book

Calculator Pages.

Concrete yardage calculator

Reader's Questions.

Questions and answers.



Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
You must check your own local conditions.
Copyright © Bill Bradley 2007-2012. All rights reserved.
Page copy protected against web site content infringement by Copyscape