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Roof Shingle layout advise needed.

Posted by Rackie on July 27th, 2000 05:59 PM

1 of 1 people found this post helpful

Hello All....

I am trying in vane to figure out how to layout the shingle
pattern for my garage roof that I am about to install.
I will be using 36", 3 tab fiberglass shingles. My problem
is that no matter how I try to layout the shingles(of
graph paper) I always seem to end up with some courses
that the last shingle is only 2" or 4". Not nearly
enough space to nail, especially if you consider 1" of
drip edge(rake and eave), 1/4" overhang, and 3/4" trim board.
I have tried many layout patterns and cannot to seem
to overcome this problem. For instance here are some
layouts I have tried:(Each side of garage gable roof is 248"
wide including drip edge and 1/4" overhand)
1) Start 1st course with full shingle;
Start 2nd course with 30" shingle(6" removed)
Start 3rd course with 24" shingle
Start 4th course with 18" shingle
Start 5th course with 12" shingle
Start 6th course with 6" shingle
Start 7th with full shingle and continue pattern.
Using 248" the last shingle of the 2nd course will only
be 2" wide. The rest of the courses should be acceptable
since 6" is the next smallest.

2) Starting from the center(124") strike vertical line. Strike
5 more vertical lines, each 6" apart.
Start 1st course with full shingle at line.
Start 2nd course with full shingle at second 6" vertical line(130")
Start 3rd course with full shingle, again indented 6"
Continue pattern on full shingle, indented 6" until
and including course 6.
Course 7 starts at the 124" center line and pattern
Using this layout course 3 will end with only a 4"
shingle and course 5 will have a 4" shingle at the
beginning of the course.

3) I've also tried with 6" off the first course, 18" off
the first course and several other layouts to no avail.

The only thing I've been able to come up with, is NOT
having a pattern using 6 courses. Everything I read thoug
says 6 course patterns. The only thing I tried that comes
close is a 4 course pattern:
Start course 1 with 24" shingle
Start course 2 with 18" shingle
Course 3 with 12" shingle
Course 4 with 6" shingle
The smallest piece this produces is 6". It would work
using a 3 course pattern too with smallest being 8".
The only problem with this is that the where the shingles
butt end to end, there will only be 3 courses between
the ones that align.

So I'm stumped as to how to layout this roof. It seems
that it would be simple but for me that hasn't been
the case. Any advise or help is appreciated. I've
been to all the roofing websites..thats where I got
the layout patterns etc but they don't work for me.
I also tried different offsets of 4 and 5".

Thank you for your time and help...also to those who
replied to my roofing felt question..thank you much!


PS: Sorry this message is so long but I want to be certain
to give accurate information.

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