What are the major differences in installing 30-yr. shingles as
opposed to 20-yr ones? I would like to replace mine with 30-yr. and do
the labor myself but only have experience with the standard flat three
tab 20 yr. style.
The instructions on the bundles of shingles I've seen say to use the
"stair-step" method by their illustrations and instructions on the package
holding the bundles. Yet, everyday almost, I see "professional" roofers
going straight up to the ridge in a squared fashion, then bridging sideways
after they reach the ridge. Is there any shingle life deteriment or
potential leakage in application of shingles by these roofers vs. the
instructions provided by the manufacturer application method?
Use full head good quality nails....some use stainless......
Use 30 # felt.........
The steeper the pitch the closer the stagger....and likewise the lower the
pitch, the less the stagger....
Some people use Ice and Water paper.....a nice addition.....
Sharp blades necessary for cutting......
I use 30 year comps for the ridge.....3 tab....they seal better.
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