5 years ago we had our original slate roof replaced on our house built
in 1915 with 30 year Elk asphalt architectural shingles. The roofers
did not have to replace any woof as it was all solid and in good shape.
The wood beams on the roof are butted close to each other with little
to no space between them.
Recently a large 6' x 4' section of shingles slide down the south side
of the roof exposing the felt paper below. The original roofer is long
gone. We called out another well known roofer in the area to
inspect/repair the section that fell.
His immediate reaction was that the roof wasn't nailed correctly. He
threw down a section of shingles and showed us how the nail heads had
pulled right through the shingles. He explained that there is a nail
strip where you are supposed to nail into the shingle. These were
nailed several inches above the area where he said was the proper
Only the south side has been effected so far and to be safe and sure we
are going to have the entire roof replaced again.
The question I have is about the underlying wood and kind of shingles
we can use. The roofer who came out and told us about the nail strip
suggested that if we want to use an architectural shingle again that we
re-sheet the entire roof with new wood. He says that the nail strip on
an architectural shingle is too narrow and would need new wood. The
nail area on a 3-tab is much larger and would not require new wood to
Another roofer says that's BS and if he did encounter any spots that
were questionable, he would only re-sheet that area. The difference is
about $2000 to have it re-sheeted or not.
Any other opinions? We'd really like to keep the architectural shingle
look but are not sure whether or not we need to re-sheet the entire
roof as the first roofer suggested. As I said above the wood is in good
shape and there are no soft spots anywhere.