In almost every instance gutter installers take the path of least resistance and shove the gutter right underneath the roof shingles instead.
Gap between roof tiles and guttering.
Looking right down the line of the guttering the gap between the end of the last roof tile and the outer edge of the guttering varies from around an inch and half to in some cases millimetres.
If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic often water runs to openings in the vapor barrier such as at ceiling light fixtures.
The gap can vary some because the gutters must slope towards the downspout.
A gap behind the guttering that is allowing daylight between the gutter and the fascia.
A gap in the guttering itself.
3 5 centimeters is in the 2 3 inch range.
Guttering installed too low.
Sometimes the water shows up at a ceiling spot distant from the leak.
If you see daylight behind all or some sections of guttering then this could be caused by the following.
Smooth the caulk bead with your finger and begin caulking the joint between the fascia board and the soffit also known as the eave.
In fact in most places i was unable to get my fingers never mind my hand into the guttering to clear it.
Any more and you run the risk of water running off the tile and overshooting the gutter.
Logic tells me that this isn t right as heavy water flow off the tiles will surely just fly off the end of the tile and miss the guttering.
Should there be a gap between roof tiles and guttering we have had birds nesting in roof and now possiblity that a rat has been in loft.
Some roof leaks are tough to locate.
Builders suggest bird combs fitted along guttering but should there be a gap that birds vermin can get through.
There is now a 1 2 inch air gap between the roof and the roofing tiles where the gutter guards were.
Broken tiles directly above the guttering.