Can I roof over the top of my existing roof?
Yes, you can. But there are some things you need to know. Go here to get some
I hate the color of my shingles. Can I paint them?
Yes, you can but it's not advisable. Shingles lose their granules over
time. What you can easily wind up with is a splotchy looking roof. Keep them
painted every few years, though and you'll be okay. Another thing, shingles
are made so that there are variations in coloring. With a painted roof,
there will be no variations. It will be all one color.
Some people are telling me to use organic shingles, and
others are telling me fiber glass shingles. What's the difference and which
do I use?
To find out a bit more about organic and fiber glass shingles, click here. What you
choose to use is up to you. Most roofers in the northern parts of the
country prefer the organic shingles, while the southern parts prefer the
fiber glass shingles. The fiber glass shingles are easier to work with and
the organic shingles have more asphalt and are heavier and more expensive to
The roofer didn't remove the little plastic strip from the
back of my shingles. Should this have been removed?
No, it does not need to be removed. That particular brand of shingle is
designed so that the sealant seals right through the strip. The strip is
there to help keep the shingles from sticking together before the're
My shingles got beat up in the last hail storm we had and
I'm tired of replacing them. What type of roof should I use?
If the hail is big enough, then it won't matter what you use, the
material will still get destroyed. There are some shingles that can take
quite a hit and remain in good shape. They are SBS Modified asphalt shingles
made by Malarkey Roofing. These
shingles have a class IV hail rating which is the highest hail rating
available. You can also look into metal, but be careful. We've all seen the
hoods of cars after quarter-sized hail storms.
I did some repairs to my roof and noticed there is no
roofing felt under them. Is this the correct way to install shingles?
No, it is not. Unless it's an overlay (recover), there should be felt
underlayment separating the roofing materials and the deck. Many home
builders install roofs this way so that they can save money. It is frowned
upon by the National Roofing Contractor's Association, the Asphalt Roofing
Manufacturer's Assocation, and any roofer with integrity.
Underlayment provides a vapor barrier between the roof deck and the
shingles, is a secondary waterproofing element of the roof, and prevents the
wood deck from leaching oils from the asphalt shingles.
If you want some installation instructions proving that it's required,
visit the following pages of three popular material manufacturers. You need
Adobe Acrobat Viewer to view the files.
What's the minimum slope I need to install asphalt shingles?
Don't go lower than 2:12 which means two inches of vertical rise for
every twelve inches of horizontal run. Anything between 2:12 and 4:12, you
should consider installing two layers of #15 felt underlayment,
reducing the exposure of the shingle - the exposure being the part of the
shingle that remains visible after installation, or both. In lieu of both of
these, you may want to install a self-adhering ice and water underlayment
over the entire deck surface.
What kind of felt underlayment should I use?
Felt paper is a vapor barrier plus keeps the oils in the shingles from
leaching out and into the wood substrate (i.e. plywood or OSB roof deck), so
#15, 20, or 30 will work for any shingle roof. The type I recommend depends
on roof slope.
For slopes less than 4/12, I recommend 2 layers of #15. Helps reduce the
possibility of leaks. The felt overlaps in "shingle fashion". Go here: Felt
Slopes 4/12 to 6/12 I recommend one layer of #15 or #20. Visit above
Slopes greater than 6/12 I recommend one layer of #30. The steeper the
slope, the easier it is to slip and tear the felt. #30 is heavier so on
steeper slopes, you don't slip and tear it as easily.
Where do I go for information on roof framing?
This author's favorite source on the web for information about roof
framing can be found here:
Be sure to make a donation to him if you use his information.
Or you can buy a book on Roof Framing at Amazon.com. Just simply enter search keywords "roof