Commercial Flat Roof Repair - Resources and Materials

Materials commonly used in flat roof installation andmodified bitumen product and finally a metal product.
repair:This roof is also less commonly installed owing to its
Built-Up Roofexpensive nature, limited material warranty, etc.
Otherwise referred to as tar or tar and gravel roof,Single Ply Membrane
this roof comprises of 3-5 layers of asphalt laminatedIt is a myth that all single ply membranes are similar.
with coal hot tar, hot asphalt or pitch. Gravel is finallyThe single ply membranes include different
added for protection from UV rays. This is nowmembranes and their performance varies. The main
becoming less popular owing to its short life, abundantrequirements of the single ply membrane nature that
heat gain, non-energy efficient, requirement ofmust be satisfied are being waterproof, non-flammable,
continuous maintenance and aesthetically unpleasantcompliant with building codes, easy to work with as
nature.well as repair, pliable at different temperatures and
Modified Bitumenweldable. Most widely employed membranes are CPE,
This is just modified asphalt to enhance the plastic andEPDM, Hypalon, TPO, PVC, CPA, etc.
rubber-like properties. The commonly employedTPO has been used only for the past ten years and
modifiers include Atactic Polypropylene and Styrenehence its performance cannot be determined yet.
Butadiene Styrene. When this roof is properly installed,EPDM, otherwise called rubber, is a black single ply.
this can last up to around 15 years.Many EPDM installations have failed owing to improper
Metal Roof Installationinstallation, material failure and harsh climates. CPA and
Metal roofs are installed normally with underlyingPVC are similar in properties and performance, the
asphalt saturated as well as coated roof.only difference existing in the chemical composition and
Underlayment is inadequate mostly in low slope roofs.viability of material.
It is better to apply an underlayment of asphalt, then