blow-offs are fairly common in rural Iowa. When
metal is not an option we recommend using an
interlocking shingle. Standard shingles have a tar
strip on them which when the sun heats them up
seals them down. In the country this is a problem
because airborne dust and dirt seems to find its
way on to the tar strip of a shingle that hasn't sealed
properly, resulting in a shingle that will never seal
down and will eventually blow off. T-Lok shingles
don't use a tar strip, instead the use an interlocking
design to hold them in place resulting in a roof very
resistant to blow-offs.
Another situation that might call for T-Loks, is when
the existing roofing just isn't laying very flat. Since
T-Loks don't seal down flat, they are better at hiding
imperfections in the existing roofing. Not to
mention saving time and money on a tear-off.
T-Loks
On T-Loks
