Of these probably the most challenging are buildings with shallow pitched roofs because standard space making solutions such as adding huge box dormers won t compensate for a chronic lack of headroom.
Low pitch roof conversion.
Flat and low slope roof retrofit by design flat roofs with conventional membrane roofs have a host of problematic conditions.
Roof pitch conversion charts are very useful for one thing they give you all the information that you need to provide to the professionals.
Even where a loft appears reasonably spacious prior to conversion the available headroom will normally have shrunk by at least 300mm by the time you ve added a new floor structure and insulated the rafters too.
Conventional roofs are the easiest to construct and you can walk on them safely.
Flat or low slope roof conversion to sloped roof design.
They have a pitch ranging from 4 12 to 9 12.
First convert the pitch to a slope.
To do this simply convert the rise and run as a fraction to a decimal form eg.
The charts are there to provide people with an idea of what the actual slope will.
Roof re cover procedures roofing codes fire hazard moisture warnings.
These roofs have a pitch less than 4 12.
If you can give them the exact chart and measurement that you like the look of they can work to those specifications.
Rise run rise run slope.
For example their inability to shed rainwater promotes premature failure of the weathering membrane and its substrate.
The original tar and gravel low slope roof lasted many years but ultimately a combination of roof age wear ponding and leaks led the owners to construct a gable roof over this building.