Help With Gable End Sheathing, Shingling, Trim

[mark2457]

Hi Guys

Got my walls and trusses up. Cut truss tails and installed 2x6 sub-fascia boards. Going to be sheathing and shingling roof at weekend, but I'm unclear about the detail of the gable end. I'll be using the same 2x6 sub-fascia, but I'm not clear if the sheathing butts up to the back of that or goes on top of that and sits flush with front edge. (I'm assuming the latter)

Anyone make a thin composite material that goes over the sub-fascia, or am I stuck with pre-formed aluminium?

I assume the underlayment and ice shield go up to the edges of the sheathing, but what do i cover the end of the sheathing with at the gable ends? some trim?

from what i've been told, the shingles should overhang the edge by about 1/4-inch

Been googling roof anatomy, etc. for a while but none seem to cover this detail

Can someone help me out or point me to a good web site?

TIA

Mark

 

[T_R]

Don't you want an overhang on the gables? Most will sheath the gable wall, then build a ladder for the overhang and nail it over the sheathing. Fascia board goes on the front side of the ladder and soffit underneath. Trim with vinyl/aluminum or paint.

At the gable edges of the roof install drip edge over the underlayment, then overhang the shingles past the drip edge.

 

[Daniel Dudley]

Don't you want an overhang on the gables? Most will sheath the gable wall, then build a ladder for the overhang and nail it over the sheathing. Fascia board goes on the front side of the ladder and soffit underneath. Trim with vinyl/aluminum or paint.

At the gable edges of the roof install drip edge over the underlayment, then overhang the shingles past the drip edge.

At the very least, run your roof sheathing past the gable far enough to cover any gable fascia or frieze board you might want to put there later. When you put your drip edge on, make sure you nail it and all your roofing in such a way as to keep the overhang clear of protruding nail ends that can get in the way of trim, sheathing or siding later on.

It is always better for your sheathing and drip edge to be slightly proud of future trim, than it is for it to be slightly short of the mark. Nobody will ever see 3/8 of an inch of sheathing under the drip edge. SO figure out how many layers are going on the gable end, add all that up, and add 3/8''. That is your roof sheathing overhang. Make it 1/2 inch if you aren't confident.

 

[mark2457]

At the very least, run your roof sheathing past the gable far enough to cover any gable fascia or frieze board you might want to put there later. When you put your drip edge on, make sure you nail it and all your roofing in such a way as to keep the overhang clear of protruding nail ends that can get in the way of trim, sheathing or siding later on.

It is always better for your sheathing and drip edge to be slightly proud of future trim, than it is for it to be slightly short of the mark. Nobody will ever see 3/8 of an inch of sheathing under the drip edge. SO figure out how many layers are going on the gable end, add all that up, and add 3/8''. That is your roof sheathing overhang. Make it 1/2 inch if you aren't confident.

Thanks Daniel. I'll have a 2x6 sub fascia board in place. Guess I'll leave an extra 1/2-inch

Thanks

makr