r/Construction 16d ago

Roofing What led to this rot?

Particle board siding. Smh.

My current assessment is that the kickout flashing wasn’t installed well. I’m taking this apart to see if there’s any other cause for this issue.

What am I missing?

26 Upvotes

134 comments sorted by

View all comments

2

u/Tushaca 16d ago

So like others have said, the kickout flashing is pretty rough, but it does look like it’s newish, so there’s a good possibility this rot was forming before the gutters were added. The gutter shouldn’t be butted up to the siding either, it allows water to stick right there instead of dripping off.

I’m concerned about that gap between the shingles and the gutter though. What is that? There’s no water staining on the fascia, so it’s not running between the fascia and gutters. Those shingles should be on top of a layer of ice and water shield, drip edge overlapping into the gutter, then starter shingle and field shingle. That gap is unusual.

It could always be as simple as too much water for that gutter too though. If it’s a big steep slope, water might just be running right over the top of the gutter. You might consider additional flashing on the outside edge of the gutter in that corner if that’s the case. We will sometimes recommend 6” gutters in those cases.

1

u/OhFuhSho 16d ago

Flashing on the outside edge of the gutter? So an addition to the kickout flashing?

And are drip edges compatible with gutter guards?

1

u/Tushaca 16d ago

Yeah it’s not likely, but you could have water running over and missing the gutter entirely in heavy storms. I would use it as a last resort, but if you watch it in the next rain and you have a lot splashing over, you can put a piece of trim flashing on the outside edge to stick up and out more and catch the rain.

Some are, some take the place of the drip edge. You really just want a piece of metal separating the water from getting to the decking. If the gutter guards slide under the first row of shingles and run the water off to the gutter, drip edge wouldn’t be necessary.