Chris Robinson Florida State Roofing Contractor 941-773-7883 Licence # CCC1326399

Modified Bitumen

Rubber Shingles

EPDM

TPO

Rubber Roofing

Modified Bitumen and EPDM
Today’s Rubber Roofing material is often made of recycledmaterials. It is very easy to maintain and  simple to fix,usually just simple sealant.Rubber roofs are preferable for low-pitch and flat roofs.

Torch Down.

Similar to tar and gravel roofing, the torchdown roof consists of layers of fiberglass and polyester with bitumen that are added to the regular tar and gravel layeringsystem.
These extra sheets are torched down in the overlap areas duringthe installation process, using large flame throwing torches that melt the asphalt at the seams to join them together, which is the origin of the name “torch down roofing”.
The final result is the vulcanization of a large rubber sheet ontoa fiberglass base. Also called modified bitumen, due to themixing of asphalt with rubber compounds, torch down roofing provides additional strength and resistance to a flat or lowsloped roof.
A torch down roof is also significantly more attractive than astandard tar and gravel roof.
Torch down roofing is applied with a torch rather than a hotmop, and this system eliminates the unpleasant odor of hotmop procedures. It also allows the torch down roof to be repaired more efficiently. Today, self adhering modified bitumen sheets are available, which allows roofers to patch up any gaps or leaks without the dangerous and costly use of torches.

EPDM

Ethylene Propylene Diene Monomer, (EPDM) is excellent for lowslope roofing. EPDM is a synthetic rubber that acts as a roofingmembrane special for flat roofs. tances.The EPDM roofing membrane is versatile and allows for manyinstallation options.

The advantages of rubber roofing are many. Rubber roofs aredurable, energy efficient and environmentally friendly (theyare often made of recycled materials). Another advantage ofrubber roofs, one that often tilts the scale in their favor, is thatthey require low maintenance, unlike wooden materials forexample. But some differences exist between the two types ofrubber roofs, with each having its own advantages.

TPO: Thermoplastic Olefin or Polyolefin

TPO membranes are single-ply roof membranes constructedfrom ethylene propylene rubber. They are designed to combinethe durability of EPDM rubber with the proven performanceof hot-air weldable seams. They have been tested as havingexcellent resistance to ozone, are algae-resistant, environmentallyfriendly and safe to install. The material’s manufacturersare so confident in properly welded seams that the material issometimes advertised as a monolithic (seamless) roof. Seamstrengths are reportedly 3 to 4 times those of EPDM’s adhesiveand tape seams.

TPO is highly resistant to tears, impacts, and punctures withgood flexibility to allow for building movement. TPO’s are availablein white, light gray, and black with thicknesses of either45 mils (.045”) or 60 mils (.060”). The width of the membranedepends on the manufacturer but they usually come in widthsof six to six-and-a-half feet and are one-hundred feet in length.TPO membranes are installed fully-adhered, mechanicallyattachedor ballasted. Fully-adhered means that the roof is“glued” to the substrate using a special adhesive. What actuallyhappens is the glue creates a chemical bond with the membrane.Ballasted simply means the membrane is loose laid overthe top of the roof, sealed at all penetrations and around theperimeter, and then a ballast is put on it to hold it in place.Ballast usually consists of smooth, round, river rock 2” - 3”in diameter and is applied at a rate of 1,000 to 1,200 poundsper roof square (100 sq. ft.). Sometimes concrete pavers areused in their place. These average 20 pounds per square foot.Mechanically-attached membranes are those that use sometype of special screw-type fastener to secure it. The type offastener will depend on the type of substrate but all fastenersare generally screw-type fasteners.

Properly installed TPO roof systems have service lives rangingfrom about 10 to 20 years, depending on the type of installation.Full removal of the existing roof, the amount of slope theroof has, weather conditions, as well as several other criteriacontribute to the longevity of a roof’s service lifeHot Mop Mostly seen in commercial applications, hot moppedasphalt roofing is sometimes applied to flat or semi-flat residentialroofs that have good access and proper drainage.

Asphalt’s advantage is that it is less expensive than other roofingmaterials and holds up fairly well when properly applied.The technique results in a roof that’s not very pretty, althoughin residential use it is often covered with a layer of decorativestone to improve the appearance. You’ve no doubt noticedroofing projects that use this technique, since it requires alarge kettle of melted asphalt. When being applied, the hotmixture releases extremely high levels of smelly air pollutants.In addition to being unpleasant, the hot asphalt poses a healthrisk to installers. Because its fumes contribute to smog, hotmopped asphalt may be restricted in some urban areas.