Modified Bitumen Roofing

The modified bitumen roof or bitumen roofing is among the roofing options that are long lasting. This kind of asphalt product may get applied on a roof in a variety of ways in temperatures that can be both cold and hot. There are numerous advantages that modified bitumen roofs have compared to other kinds of membrane roofing and they are usually viewed as a modernized alternative to the roof that is built up.

Method of Manufacturing

Flat roof installation. Heating and melting bitumen roofing felt by flame torch at construction site

The standard asphalt roofing is added with modifiers as a replacement to the removed plasticizers during the process of distillation. The reinforced bitumen has polyester or fiberglass fiber matting so that its strength and durability will increase.

Two of the types that are most common are the APP and SBS. The membrane’s flexibility is increased with the use of the styrene-butadiene-styrene or SBS and it is allowed to have stronger capabilities in contraction and epansion. The attactic polypropylene or APP allows the increase in the roof system’s ability in aging. Oftentimes, people view SBS as a system that is more popular because the additive of synthetic rubber can increase the flexibility of the product.

Method of Application

Roof systems with modified bitumen may get installed with the use of cold adhesives, usual torch method, or asphalts. The two-ply system which is the standard SBS bitumen modified roof system is a system that is two-ply which may get applied in rolls that can overlap the previous roll’s edge.

Advantages of the Bitumen Roof

Applying bitumen mastic

There are some various advantages involved in the use of a bitumen roof on a home or a building. It not similar to the new roofing types that has a proven and long track record that people can count on. When it comes to the materials for flat roofs, this kind of roof is capable of lasting for a long time which can approximately be two decades or more.

This material may get applied with the use of cold-applied adhesives, hot-mopped asphalt, or self-adhesive sheets. Regardless of these ways on how to apply the material, the seems often get melted together so they can help in stopping any leaks. Membrane roofs have other types that have seams that may get covered with another material or are left open which may eventually become weaker over time. Because of this, it can be advantageous to have a bitumen roof that is seamless.

Bitumen roof can also become highly durable as they possess tensile strength that can be high. Because of this, it may be unlikely for them to develop any kind of crack that often occur to other membrane and flat roofs. Aside from this, they are also rated to be strong against hail, wind, and fire making them unlikely to become damaged in case a storm occurs. This kind of roof often includes a very long warranty from the manufacturer which can help in guaranteeing the longevity of the roof.

Disadvantages of the Bitumen Roof

Rolls of roofing bitumen

Similar to other types of roof, the bitumen roof has a few disadvantages. One of them is that it is colored black so it can absorb instead of reflecting heat. Even if the material can’t get damaged by the UV rays or heat, if the building underneath it does not have proper insulation, the absorption of the heat may allow the building underneath to become too hot.

Bitumen roofs may become available in 3, 2, or 1 ply. Since the 1-ply material isn’t very durable, using it may lead to specific problems like its premature breakdown. The installation of 3 and 2-ply material roofs may have a significantly higher cost for installation making it one of the flat roofing products that can be highly expensive.

As a part of the process of installation, it is essential to include granules in order to allow the roof to become well protected from the sun. Failure to include this may lead to an increase in the building’s temperature and damages on the roof. It is unfortunate that not every type of bitumen roof have granules included as a part of their process for installation.

Finally whenever the roof becomes more likely to gather standing water in puddle or hold an extensive amount of water after any rainstorm, it may lead to the premature aging and damage of the bitumen roof.

In order to complete the installation of a bitumen roof successfully, it is recommended to make sure that you do it correctly. It means you need to use a material with two or three plies and have it coated against exposure to UV rays. Do this right so you can have a bitumen roof that can outlast any competition.

At Orezona Building & Roofing Co., you’ll get a team of contractors that have more than two decades of combined experience and treat every project like it is their own. The company is dedicated to provide excellent customer service and customer satisfaction. Aside from that, we always make sure that our prices are always honest and fair.

Whenever you are in need of roofing services in Corvallis OR, make sure to contact us.