Question For Any Home Improvement People (Roofing & Siding)

[Old Moparz]

I know some of you guys (gals too?) are in various trades as far as home improvements go, so I thought I'd ask a question.   

I finished putting a brand new asphalt shingle roof on my house last spring & now working on the siding. It's 1x8 rustic channel style, installed in various patterns depending on the wall. Some of it is vertical, some diagonal & some horizontal. There are several issues I am correcting while creating an air space with 1x3 furring strips behind it & doing the trim differently.

Instead of installing the trim over the siding, I am installing a thicker trim first, & butting the siding up to it so I have a surface to caulk. One improvement I am making is the installation of 3/4" thick, rigid foam for a better R value on the 2x4 walls. I am going to be able to reuse 90% of the siding but the trim will all need to be replaced.

The house is a contemporary, but it closely resembles a salt box regarding the roof & walls. The front & rear have an overhang with a soffit, but the gable ends don't. One of the gable ends has the plywood roof sheathing sticking out over the edge by about 1-1/2" or so, but the other side doesn't. The only reason I can think of for the extra 1-1/2" is because the builder didn't feel like cutting it off & used the full sheet.

This works to my advantage because I am adding 1-1/2" to the wall thickness with the rigid foam & the furring strips. However, the other side will force me to do something different. By installing the trim first & not on top of the siding I gain 3/4" but still need another 3/4" for the 1-1/2" increase.

I'd like to avoid touching the new shingles & didn't want to recess the trim on the gable so the siding sticks out past it. What I have to ask is, are there any installation methods or products available that will allow me to meet the edge of the roof with the siding & not have the siding stick out past the edge of the shingles?

I added a photo of the one wall that I am having this problem with.

[ws23rt]

It seems you are stuck with the dimensions you have.  So the next best thing is to give an illusion with the trim to make it look as you want from a distance.  Maybe have the trim beveled from where it meets the siding back to where it meets the shingles?

[Old Moparz]

It seems you are stuck with the dimensions you have.  So the next best thing is to give an illusion with the trim to make it look as you want from a distance.  Maybe have the trim beveled from where it meets the siding back to where it meets the shingles?

Interesting idea, I'll have to play around with some sketches. 

One thing I gave thought to is changing the type of siding up at the very top above the 2nd floor window in that photo. That wall area is an uninsulated attic so I may be able to to something different there. The only reason for using the rigid foam there is to keep the surface at the same level.

[ws23rt]

The rigid foam can be had in different thicknesses.   But I can see that may not work on all sides at once

[b5blue]

  There should be some type of metal "Flashing" at the edging of all the roof tiles. You could flash the flashing by lifting just the edge and running an additional layer of tin, tared in place over and out to a new run of flashing out as far as you need on the new thicker trim. (If I understand your problem.)
  The shingles would end and the tin would be exposed but it would not matter, it would look OK from the ground. 

[Old Moparz]

  There should be some type of metal "Flashing" at the edging of all the roof tiles. You could flash the flashing by lifting just the edge and running an additional layer of tin, tared in place over and out to a new run of flashing out as far as you need on the new thicker trim. (If I understand your problem.)
  The shingles would end and the tin would be exposed but it would not matter, it would look OK from the ground. 

There is the metal edging called "drip edge" that I installed & there is a way of tucking some flashing under it, but I think I found an idea that I like after looking at siding photos. Instead of putting the diagonal siding back up in that area I am going to use vinyl. The style I am 99% sure I will use is "hand split cedar shakes" forming a triangle. I won't insulate that triangle since it's uninsulated attic & by changing the siding & pattern the small recess won't be too noticeable......I hope.