Yes, I would definitely disconnect roof trusses from the top plate of interior non-bearing walls. In fact truss manufacturers require it.
When bottom chords of trusses rest on top plates it puts the bottom chord in “double bending” and the trusses are not designed for that kind of stress. In fact truss manufacturers recommend a clip that fastens to the top ...
Water flows downhill
In any downspout system, the water will flow from higher points to lower points. So when you install downspouts, you don't lay them flat; you install them with a slight slope, and you make the low points where the downspouts are. That way no matter where water lands in the gutter, it always flows toward a downspout.
The trouble is ...
I live in the land of moss and funguses (Oregon) we are in a drought and there is moss on my roof bright green. It rained last week it is raining this week and in all reality it will rain in the next 2 weeks it’s oregon.
I don’t treat it every year but every few years I have to on 1 side of the roof the other side the zinc strips have kept it clean.
I get on ...
There is no way in hell you power wash an asphalt shingled roof. You will ruin the shingles and possible squirt water under. Shingles are made to cover the roof from water at all angles, they are designed to cover the roof from water generally shooting down.
I had a roof that had a few trees over it. It too got moss, some algae. The best way to deal ...
@muttonup, to specifically answer your question: Yes; where both edges need support, it is best practice to provide blocking in plane with both upper and lower surfaces.
The rest is to expand a little bit:
Yes, that works to provide backing for the two planes. Although, doing the same thing in a different way is better for preventing differential ...
Noggins are not meant to be used as edge backing. Its intended use is for bracing and stiffening joists and studs. If anything you will lose strength when improperly placed.
I normally use H-clips and/or backer clips for OSB or drywall as needed.
combining Kris and Ecnerwal's answer that's a "cap flashing" cost is off topic.
Usually these are made to order at sheet-metal shop (ask at a plumbers supplier)
when you go to place an order (with a drawing and dimensions) they will tell you the cost.
It may be that the incorrect method has been used to make this connection and that a join capable ...
Is there anything very critical I should beware of, or should I avoid doing this entirely?
Yes, you should be aware that the roof truss wasn't haphazardly designed by someone on a Friday at 4:59 PM.
A lot of engineering went into your trusses so unless you're an engineer then I would suggest you do not alter the webs.