Roof "Second layer Starter Course help"

[Rick K. Kie]

In a roof over using archetechual shingles isn't a starter course still needed?
I just want a second opinion before i write it up on the report this afternoon. Just one of many roofing issues found

[James F. McKee]

best practices do call for a starter row for sure, although I've often seen it done with a non matching left over shingle,,,are You sure it wasn't a new shingle of a different color?also starter course is turned so it wouldn't look exactly like the dimensional above it...all that said if that is an original shingle in your picture it's wrong imo...jim

[dmcauley]

Is this architectural roof installed over an existing roof? If so, it is not supposd to be per the manufacturer.

[Rick K. Kie]

Originally Posted by dmcauley

Is this architectural roof installed over an existing roof? If so, it is not supposd to be per the manufacturer.

Its "definetly" the old shingles underneath.
Dennis I did read this morning I think on GAF or tamco web site they want the first course 4" high.

[Marcel R. Cyr]

Originally Posted by rkie

In a roof over using archetechual shingles isn't a starter course still needed?
I just want a second opinion before i write it up on the report this afternoon. Just one of many roofing issues found
Attachment 25638
Attachment 25639

Hi. Rickie; This may help a little.


http://www.gaf.com/General/GafMain.a...ngle-lines.asp

Go under Roofing ABC's

Marcel

[jkogel]

In addition to the above, the general rule is no warranty if applied over old shingles.

John Kogel
www.allsafehome.ca

[Marcel R. Cyr]

Also take advantage of the installation video's.

Marcel

[Bob Elliott]

Originally Posted by mcyr

Hi. Rickie; This may help a little.


http://www.gaf.com/General/GafMain.a...ngle-lines.asp

Go under Roofing ABC's

Marcel

Great link to have Marcel.
We need to put together a best sites .
There are so many.
I started doing that last year on a wiki.

[rmaday]

Originally Posted by relliott

I started doing that last year on a wiki.

Link?

[Barry Adair]

Originally Posted by rmaday

Link?

patty, ham or bacon

[rmaday]

Originally Posted by badair

patty, ham or bacon

Sausage.

[Marcel R. Cyr]

Originally Posted by rmaday

Sausage.

And if that is not fatty enough, let's all go for the Blood Sausge "Pork".




Ok, I know. ha. ha.

On a different token, try this Link;

Feel free to add to it.

http://www.nachi.org/forum/f23/struc...84/#post452991

Marcel

[Darren Spencer]

Tear it off and do it right, no more advise needed

[cduphily]

Originally Posted by rmaday

Sausage.

Bacon AND sausage!

[Ed Fako]

For a re-roof over an existing one layer shingle roof, you do not NEED a starter course, but the 5" exposure at the bottom row SHOULD have been filled in with a starter course if they were concerned about that hump from the transition to the second course.

Also, the bottom course should have the top =~ 2" cut off the top of it, so that all of the successive courses "Nest" into the course layout neatly and uniformly without any further hums at the transitions.

But, the Primary reason for the starter course, is to ensure that there is a roofing material under the slot cutouts or at the side edge butt joints, to prevent leakage directly through those gaps.

Ed