Greater overhang becomes a point of leverage for gusts of wind to rip off your roofing.
Roof sheet overhang into gutter.
The industries requirement for projection of the cladding into a gutter box valley or eaves.
The reason for this is that whenever rain runs down any type of roof when it gets to the lower edge it clings to the tile or slate by capilliary action this means that the water actually runs around the bottom edge and slightlly back up the rear of the tile before gravity allows it to drop into the gutter.
A typical metal roof overhang may be 2 to 4 inches or even less.
Leave the old spikes in place a spike head looks better than a hole in the gutter.
1 replace your roof sheets with new ones or 2 assuming that you have at least a 20mm overhang into your gutter grab a pair of pliers or multigrips and bend down the valley of your roof sheets into the gutter.
Here phil explains how much overhang a roof should have at the gutter.
Minimum roof slope adheres to the minimum roof pitch for your specific profile.
The bottom tile or slate of the roof covering should project at least half way into the gutter the ideal distance is between half way and two thirds of the way over.
The maximum overhang is shown in table 2 12 1 and 2 13 1.
Just hook the bracket under the front lip of the gutter and then screw the other side of the bracket to the fascia.
About 1 inch just enough to assure the water goes into the gutter and not behind it.
Obviously the roof sheets do need to extend beyond the roof line slightly so that the water runs into the gutter but in some places the sheets come down so close to the outter face of the gutter that i cannot even get my fingers into the gap.
The overhang is the projection of the sheet past a support.
Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.
The minimum overhang must consider.
If you already have your roof sheets installed you need to do one of two things.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
Here phil explains how much overhang a roof should have at the gutter.
Many installers deliberately bend down the overhang into the gutter to assure no wind blown rain goes between the overhang and the gutter effectively preventing water incursion behind the gutter.
