[jklingel]

I've been reading here a bit, and think this will be fine. But... Situation: No, there is no I&W shield planned. This is a shop that will be used infrequently when it needs to be heated, and then it will neither get real warm nor for more than several hours at a time. I therefor don't think the I&W would be beneficial, and it is 10 below right now w/ slight frost on the plywood no matter how much I sweep. The I&W would never stick. I've gotta get this puppy closed in before the temp drops. I will be doing a good job air sealing, too, to avoid moisture escaping the conditioned (rarely) space. The facia board is drawn a bit funky, but it will be a normal 2x6 beveled on the bottom for drip collection. I am planning on leaving a small gap between the drip edge and the plywood so the plywood can be re-treated now and then w/ facia. There will be no normal gutters; 3' overhangs and likely ground gutters instead. Ply will overhang the facia by 1/2", D-drip will stick out 1/4" from ply, and shingles will overhang D-drip by 1/4-3/8". Goo will go between D-drip and felt, and starter shingles will be generously goo'd (next spring). Thanks for any comments.

 

[Windows on Wash]

I think you are fine.

Ice and Water is a Band-Aid response materials to poor building and ventilation.

You know more than 99% of the roofers out there so I think you are golden.

 

[Grumpy]

People saving $75 on ice shield, for the loss.


That's how I would install the drip edge if I were only installing felt. "Water rolls down hill, pay day is on Friday. If you remember that, you'll be ok." That's what I tell all new guys on day one. So if water gets under the shingles and rolls down the felt it will roll out, rather than roll behind the drip edge if the drip edge were installed over the felt. However if you are installing a gutter, I would disagree with your design and once again encourage ice shield.

 

[Windows on Wash]

I agree that Ice and Water is recommended, just not sure it is a must if he isn't heating the space.

 

[jklingel]

Thanks all. I will install I&W on the house, but agree w/ WOW that if you have properly air sealed then no vapor will be getting to the roof. But, for stink and giggles, it is probably a good, cheap and easy to install insurance member.