Please post questions about anything having to do with roofing

[Frank Albert]

A picture from a new roof in Belgium, donated to me by Wim B. It's a slate roof using hooks for the install. Notice the nice plank underlay.
More: http://www.slateroofcentral.com/messages/


Wim B's site is here; http://slateb.angelfire.com/
Sorry if I come off wrong sometimes. I just feel that workmanship has taken a back seat in nearly every field today.

[Larry D. Kage]

Originally Posted by Frank Albert

I just feel that workman ship has taken a back seat in nearly every field today.

That is for sure Frank and it is a pleasure to interact with people that take pride in a job well done.

[Ed Fako]

Building Code in all of the towns that i work in require the felt paper to be there, so it is.

Another question I just thought of, seeing another thread.

What is the difference between an ODE Drip Edge Flashing and a Gutter Apron Drip Edge Flashing?

What would be the possible ramifications of using the wrong style at the different perimeter edges?

Ed

[Ed Fako]

I wanted to show an example of what using the wrong style of drip edge metal can do and the problems it can create.

Ed


Well, I guess the new moderation rules do not allow me to post anymore photos. Sorry.

I sent in my request to get proper user permissions, but still after about a month now, i have not heard back.

WTF? This really takes the wind out of the sail and destroys any enthusiasm I have to want to post information here.

Where is the Browse Button To Upload a Photo?

Geez!!! This site frustrates the chit out of me. It's not worth posting if I can't see my posts to edit them or even add a photo to clarify a point.

[James H. Bushart]

Sorry, Mr. Fako.

If you watch this, it will help you better understand the mindset of at least one of our moderators.

[Richard Murphy]

The 2001 Florida Building Code calls for attachment of Asphalt Shingles:

"where the basic wind speed per Figure 1606
is 110 mph (49 m/s) or greater, special methods of fastening
are required. Unless otherwise noted, attachment of
asphalt shingles shall conform with ASTM D 3161 (modified

to 110 mph) or M-DC PA 107-95."

My question is: Prior to the adoption of the 2001 FBC what were the requirements for shingle attachments in the 110 mph areas? (And can this be found in the 1997 Standard Building Code?)

[pabrioux]

Does this look like the roofer forgot about the flashing and installed it after the fact? Monitor closely or fix? (no signs of failure at the moment)

Thanks again,
Paul-Marc

[Kenton H. Shepard, CMI]

Originally Posted by pabrioux

Does this look like the roofer forgot about the flashing and installed it after the fact? Monitor closely or fix? (no signs of failure at the moment)

Thanks again,
Paul-Marc

That's how the majority of counterflashings are installed at brick sidewalls, more or less. Yep, it's wrong. Counterflashing should be installed in a stepped fashion inserted into mortar joints or into a groove cut parallel to the roof with a grinder.

"Counterflashing at the brick sidewalls and headwalls was improperly installed and is dependent upon sealant to prevent moisture intrusion. Sealant will eventually dry, shrink, crack and leak.
The Inspector recommends that proper counterflashing be correctly installed by a qualifed contractor.
If you choose not to have the counterflashing corrected, the sealant condition should be checked annually and re-applied as necessary."

[pabrioux]

Thanks Kenton. What about water getting under the flashing though as well, as it runs down the shingles. Shouldn't that flashing also be under the shingle ends, as well as being cut into the mortar joints?

Thanks,

Paul-Marc

[Michael Larson]

Originally Posted by pabrioux

Thanks Kenton. What about water getting under the flashing though as well, as it runs down the shingles. Shouldn't that flashing also be under the shingle ends, as well as being cut into the mortar joints?

Thanks,

Paul-Marc

http://www.hgtvpro.com/hpro/bp_exter...4243895,00.htm

[Jeffrey S. Campbell]

"Yep, it's wrong. Counterflashing should be installed in a stepped fashion"

absolutely... as Kenton stated... stepped...

[pabrioux]

Ok, I read too fast.

Thanks guys for the info and the link.

Paul-Marc

[Tim Larsen]

Kenton, and all,

What should be a proper lap for a 3 tab asphalt on a 10/12 pitch?
How about on the 3/12 transition?

Also, what should the flashing for this transition look like? Snow is not a big consideration for this house.


Cheers,
Tim

[Kenton H. Shepard, CMI]

Originally Posted by jcampbell

"Yep, it's wrong. Counterflashing should be installed in a stepped fashion"

absolutely... as Kenton stated... stepped...

Sidewall flashing must always be stepped, counterflashing can be stepped or continuous and installed in a groove.

[Kenton H. Shepard, CMI]

Originally Posted by tlarsen

Kenton, and all,

What should be a proper lap for a 3 tab asphalt on a 10/12 pitch?
How about on the 3/12 transition?

Also, what should the flashing for this transition look like? Snow is not a big consideration for this house.


Cheers,
Tim

Hi tim,
In looking at 3-tab shingles you'll be going by the exposure as opposed to the lap, the exposure being the amount of shingle tab visible- usually about 5".
The exposure is specified by the manufacturer and won't change with roof pitch. Metric 3-tab, which are rare in the U.S. may show a bit more- 5 1/2" or so.
Basically, you shouldn't see the top of the cutaway (notch) or the adhesive strip.
You won't need to see any change in exposure at pitch transitions, however they should be protected by flashing unless the home is in Death Valley.

Flashing for pitch transitions typically comes in a 12"-wide coil. The width may vary. Installers uncoil flashing and cut it to length. Properly installed, it goes beneath the shingles on the steep section and over the shingles on the low-slope section