But the tables that follow are a lot more specific.
Roof overhang minimum.
Ensure to detail the fascia so that rain is cast off and does not track back under the soffit.
The roof overhang will be 36 inches at the eaves measured horizontally and 36 inches at the gable ends.
Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.
For the south side of the home you should follow basic solar design principles.
This can make extensive roof overhangs more trouble than they are worth in all but the harshest climates.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.
Eave overhangs shall not exceed 24 inches 610 mm measured horizontally.
Two feet is the general maximum length for a typical roof overhang.
Joints between purlins next to one another should be staggered.
There is a certain logic in extending the gable overhang further the higher you get as you mention but that complicates the roof and i don t like the look of it.
Weather and not properly protected by a roof eave or similar covering table r802 11 required strength of truss or rafter connections to resist wind uplift forcesa b c e f pounds per connection r804 3 2 1 1 eave overhang.
The edge of the shingles should hang over the edge of the roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed and in most cases it should be.
Knowledgeable roofers will install shingles at just the right overhang for your roof type.
Anything else is down to design but the more the better.
This will protect a roof from most types of damage.
The minimum is 50mm to allow for a drip.
A typical metal roof overhang may be 2 to 4 inches or even less.
Browse 295 roof overhang on houzz whether you want inspiration for planning roof overhang or are building designer roof overhang from scratch houzz has 295 pictures from the best designers decorators and architects in the country including dodge construction llc and bergerson tile cabinets.
Figure r804 3 2 1 2 gable endwall overhang details.
In short that means that the roof overhang should be of sufficient dimensions to optimize the amount of shade during the warm summer months but not be so large that they do not allow full sun exposure during the cold winter months.