Roof-Over Shortens Shingle Life
To the Editor:
"Reroofing Over Asphalt Shingles"
(5/99) was a great article. The pride of
workmanship in John Curran's jobs
shows through. However, in South
Dakota we have such temperature
swings that reroofing over asphalt shingles
can shorten the life expectancy of
the new roof by 30% or more.
Like John, I have worked in my
hometown for 25 years and have
reshingled some homes more than
four times due to hail and high wind
damage. A couple of years ago we had
a severe hail storm and most local
homes needed roof repair. I had the
opportunity to reshingle houses that I
had added on to in the past ten years.
I was amazed