"James" wrote in message
...


I am going to be re-roofing a small shed. I plan to use the GAF Grand
Timberline 50 year architectural shingle. I have several questions:

Re-roof what does this mean, going over the existing shingle or ripping the
old off and put back new?

If you are going over the old shingle the 50 yeare shingle is over kill.


I have read that I should use a "starter" course along the eaves and rakes
of the roof. But, the book that I am reading says that this starter
course
should be a 3-tab type shingle. Why is this ??

3 tab shingle is cheaper than the the grand timberline. It is not viewable
other than the gable ends. I use them on the gable ends so that my finish
product look and is straight. Cutting shingles straight can be a trying job
when looking for perfection.

I don't see a 3-tab shingle at the GAF website that comes in the same
color
as the architectural shingle that I would like to buy. (I guess it
doesn't matter much if the starter rows would all be covered up anyhow ??)

Doesn't matter. Lowes sell a good 3 tab but check the prices.
I have thought of using the rubberized WeatherGuard instead of felt. Is
this better than paper felt? Although I think it would be quite expensive
for a house, just 1 roll would do for my shed.

Check building code for your area. Ice shield may be required for the eaves
and over hang.
Should I order 1 1/2 nails for these architectural (50 yr) shingles
??


Now for the shingle. In order to get good life out of your shingle you must
consider ventilation. As for the requirements, 1 sq ft of ventilation for
300 sq ft of attic space is required. If your over hang of the garage has
vinyl vented soffit and between your rafters you have baffles so air can
come through then you should be fine, also a ridge vent must be installed.
Ventilation is the key to shingle life.
What size nails would I get to lay down the WeatherGuard ?? Would it be
the same type nail as the nails for the shingles ??

Code recommends that the nail penetrate 3/4 of an inch on the sub roof.
Thank you very much !!

--James--