In this spot it s possible that water could flow down the wall and slip past the shingles into the building below.
Ger to attic where roof and wall meets.
One way to gain access is to take up roof decking at the eaves as shown in figure 2.
It is recommended to install ice shield on top of the smartvent extending up the wall about 12 to ensure a weather tight seal lapping under any house wrap so water can drain over the ice shield any waterproof membrane will work instead of ice shield.
The best way would be to install one or more layers of rigid foam above the roof sheathing followed by a layer of osb or plywood and new roofing.
As each row of shingles is laid a step flashing is installed over the shingle next to the wall.
They go along where walls meet the roof such as dormers etc.
This approach would transform your vented unconditioned attic to an unvented conditioned attic.
How to use the sloped space in an attic.
This is true no matter what type of roof covering material is installed.
You find these flashings where a roof climbs alongside a vertical wall.
These low walls add an interesting architectural feature to.
I can t really get my body close enough to the point where the hole needs to be to drop down the wall since the slope of the roof meets the ceiling in the attic and leaves only about a foot and a half clearance.
Part of the flashing turns up on the wall and the other portion gets covered by the next row of shingles.
If the roof wall connection isn t accessible from inside the attic and the inspection indicates that you have to add hardware you will need more than just a peephole.
A headwall is a level junction where a roof meets a wall.
The short walls that meet the slope of an attic ceiling are usually referred to as knee walls.
Chimney flashing creates a water resistant shell around the chimney but flashing can be damaged resulting in leaks.
Chimney flashing a chimney is an area of the roof particularly vulnerable to water damage.
Look for rust or holes in these flashings.
Step flashing ensures that water is directed away from the wall and ends up in the gutter.
Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here.
If you meant an eave gap under an entirely new roof between the top of the wall and the underside of the roof that might well be especially if between the rafters or truss rafter tails your eave ventilation gap which for a ventilated unheated unair conditioned attic provides ventilation air to control heat and moisure buildup.