Attic Space Build-Up
New Attic Space Framing Over a Flat Roof, Toronto
New framing set out for an attic space build-up over a flat roof.
Photographs From This Job
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About this job
New framing set out for an attic space build-up over a flat roof. The members are laid out and checked before anything is fixed, which is the least glamorous half hour of the job and the one that decides whether the finished deck runs true. Build-ups like this do more than restore what was there. They are the opportunity to put fall into a roof that never had any, which is how ponding gets solved at the structure rather than managed with tapered insulation later, and they set the depth of the cavity that the insulation has to fit into. In a lot of Toronto houses the existing cavity is only a few inches deep, which makes hitting a sensible R-value with joist depth alone impossible. Framing a build-up changes that constraint, so the conversation about insulation happens now, while the space to hold it is still being decided, rather than after the deck is closed and the answer is fixed.
Project summary
- System installed
- Structural rebuild under a flat roof
- Scope
- New framing set out over the existing deck
- Property type
- Residential low-slope roof, Toronto
- Crew notes
- Members laid out and checked before fixing
Systems used on this job
What This Job Involved
In the words written against these photographs.
What is happening here
The members are laid out and checked before anything is fixed, which is the least glamorous half hour of the job and the one that decides whether the finished deck runs true.
The detail that decides it
They are the opportunity to put fall into a roof that never had any, which is how ponding gets solved at the structure rather than managed with tapered insulation later, and they set the depth of the cavity that the insulation has to fit into.
Why we do it this way
In a lot of Toronto houses the existing cavity is only a few inches deep, which makes hitting a sensible R-value with joist depth alone impossible.
Systems and Services on This Job
Where this work sits in what we do, and where to read more about it.
More Projects Like This One
More flat roof projects of the same type across Toronto and the GTA.
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