|
Posted by marson on May 25, 2007, 7:46 pm
>
>
>
>
>
>
>
> >> >>> 1507.8.3 Underlayment.
> >> >>> Underlayment shall comply with ASTM D 226, Type I or ASTM D 4869. In
> >> >>> areas where there has been a history of ice forming along the eaves
> >> >>> causing a backup of water, an ice barrier that consists of at least
> >> >>> two layers of underlayment cemented together or of a self-adhering
> >> >>> polymer-modified bitumen sheet shall be used in lieu of normal
> >> >>> underlayment and extend from the eave's edge to a point at least 24
> >> >>> inches (610 mm) inside the exterior wall line of the building.
>
> >> >> This particular item does not require extending beyond the wall line.
> >> >> I included that because a lot of installer do not realize that
> >> >> extension is required and the intent is to have Ice and Water Shield
> >> >> where damming is possible. This situation is why the code has
> >> >> multiple sections. We must design and build as close to the letter
> >> >> AND the intent of the code as possible, not forgetting real
> >> >> situational constraints. We also must understand that ALL conditions
> >> >> can not be addressed in a single book, and that meeting the Code
> >> >> Minimum is equal to passing high school with a D-.
>
> >> >> 1507.2.9 Flashings.
> >> >> Flashing for asphalt shingles shall comply with this section. Flashing
> >> >> shall be applied in accordance with this section and the asphalt
> >> >> shingle manufacturer's printed instructions.
>
> >> > You would not make it in a real city. I don't want to be rude, but
> >> > you're
> >> > better off sticking to a small town in Utah. By stating absurd remarks
> >> > such as " Minimum is equal to passing high school with a D-", I highly
> >> > doubt you get paid funds by any city or state. You are putting emotions
> >> > above the job. Is it any wonder you are asking in different groups
> >> > attempting to keep up to date with codes? Real inspection jobs pay for
> >> > continuing education, be it private industry, or working for uncle Sam.
> >> > Just try telling a contractor, you red tagged the work because it meets
> >> > minimum.
>
> >> > You're skirting the code issue, _you_ brought up, by citing a totally
> >> > different code for flashings. Please further address what was being
> >> > discussed. In fact, the code _you_ cited, specifically states "In areas
> >> > where there has been a history, blah, blah". Being this is, what
> >> > appears
> >> > to be new construction, there isn't a history. Plus, this is an
> >> > unheated
> >> > area, and w&i shield can not be applied in the way, this code cites.
>
> >> > There's a reason why I'm calling you on this. I did contract work for
> >> > roof
> >> > inspections, in 4 larger cities, all in 1 county. The area was in the
> >> > Midwest, where temperatures fluctuate widely.
>
> >> > BTW, I'm not against water & ice shield. In fact, I would prefer to see
> >> > it
> >> > used as if every deck surface was heated.
>
> >> > On second thought, please do not address this issue any further. You
> >> > really don't know what you're talking about, so why should I waste my
> >> > time, proving you don't?
>
> >> Well you would BOTH be wrong here on the Maine coast we dam near cover
> >> the whole building with Ice and Water Shield and still sometimes get
> >> leaks
> >> from wind driven rain off the water even on unheated porches and
> >> garages...You would be surprised where water gets driven by a 60 MPH
> >> gale.....LOL
>
> > And therefore, if you live in Minneapolis MN, you should ice and water
> > the whole roof because of conditions in Maine? LOL!
>
> No moron . My point was it depends on where you live NOT just "The Codes"
> The codes don't require the whole building to be covered here BUT
> EXPERIENCED contractors know to take LOCAL CONDITIONS(waterfront,direction
> of exposure, ect.)into account. Last I checked MN has about 10,000 lakes as
> well as big open fields and wind driven rain..I typed slow so maybe you
> could follow along.
>
>
Well, call me a moron if you want. I don't get involved in flame
wars. We were having a discussion about ice and water shield as
protection against leaks caused by ice damming and whether an unheated
porch requires it. You bust in and say that because of wind driven
rain in maine, we should be using ice and water on unheated porches.
That just doesn't make sense. It's like me busting into a discussion
about protecting a structure from termites in Mississippi and saying
that the footings should be 54" deep cause that's how we do it in
Minnesota.
I have worked for people who wanted ice and water over their whole
roof. Sure doesn't hurt, but at 30 bucks a square, it's not exactly
cheap. Again, I just have not seen leaks on roofs. I've seen leaks
from ice dams, and leaks from bad flashing, but on a big simple roof
with adequate pitch, I just haven't ever seen leaks. Now if you live
somewhere where conditions are extreme then by all means use ice and
water instead of tarpaper.
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap