Your Professional Roofing Restoration Experts

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Your Professional Roofing Restoration Experts
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There are many types of low slope roofing
products on the market, they all range in price
and effectiveness. Tar has been around for a long
time dating all the way back to the Egyptians,
tried and true it has had its day in the sun.
There are many roofing materials that are made
from tar and bitumen materials. Modified bitumen
is a hot applied or self-adhered rolled roofing
that is granulated to protect it from the sun.
Life expectancy 10-15 years.
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Tar and gravel built up roofs are a series of
layers of hot tar and tar paper stacked up and
then covered with gravel to protect it from the
sun. Life expectancy 10-15 years. There are a few
others not worth mentioning here. TPO
Thermoplastic polyolefin Is a single ply white
membrane made in layers with scrim as a binder to
hold it together. Just like most of the flat roof
products it has a shelf life of about 7-15 years.
It loses thickness to the sun every year and has
many seams that make it susceptible to failing.
TPO is often installed over an existing roof. 
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Installing tpo over an existing roof creates
condensation between the two layers of roofing
and traps moisture where you dont want it. It
requires about 1000 screws to install it and
often times you are left with hundreds of
exposed fasteners in the parapet walls that are
not legal or allowed by building code And cause
leaking through the parapets. Edpm Is a single
ply product that is install exactly like TPO. The
only difference is that EPDM is like a giant bike
tube a stretchy black membrane
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     Canales are where the water exits the roof.
Most flat roofs leak at the canales where the
metal meets the roofing material. As roofs expand
and contract from the extreme heat and cold they
experience. They start to give way the seams and
protrusions. Annual maintenance in the right
areas can prolong the life of a roof immensely.
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For more update , visit us
https//99restoration.com/flat-roofs/