What is a built-up bitumen roof?

Built-up roofing, also called BUR, is the most common roofing material used on low-slope roofs. It is composed of alternating layers of reinforcing fabric and bitumen (asphalt) and is finished with a top layer of aggregate, such as stone or gravel.

How can you tell the difference between modified bitumen and rolled roofing?

Probably the easiest way to tell just by looking is the seams, the asphalt rolled roofing will have plastic roof cement in the seams, the mod bit will have melted tar squeezing out of the seams.

What is the difference between EPDM and modified bitumen?

Both EPDM & Modified Bitumen offer benefits to the flat roofing industry. Modbit tends to be less expensive and offer more aesthetically appealing options, while EPDM is more environmentally friendly, easier to install, and tends to have a longer life cycle when installed correctly.

What is a built-up-roof?

As a system, built-up roofing (BUR) is a type of asphalt roofing that has been around for more than 100 years. It is one of the most common materials used on low-slope or flat roofs.

How long should a built-up roof last?

20 to 30 years
In general, a properly installed built-up roofing system will last 20 to 30 years.

Is modified bitumen roof good?

When correctly installed and properly maintained, a modified bitumen roof will be a building’s most durable asset. We recommend 2- or 3-ply systems under roof top patios and decks or in very tight spaces. Cold-adhesive applications and self-adhered plies are newer to the market and offer many benefits.

Is modified bitumen the same as asphalt?

Modified bitumen is one of the most common low-slope roofing systems. Not to be confused with similar materials like asphalt roll roofing, EPDM, or TPO, modified bitumen combines hot asphalt with plastic and rubber additives. They are then layered between sheets of polyester or fiberglass.

How long should a modified bitumen roof last?

approximately twenty years
It is important to notes that modified bitumen roofs have a solid roof lifetime of approximately twenty years. This is an estimate that does not include good roofing maintenance.

How many layers does a built-up roof have?

Built-up roofing systems are most commonly applied with three or four layers of roofing materials to make up the complete roofing system. These layers are typically a base sheet, a fiber sheet, and then either one or two layers of bitumen.

How long do modified bitumen roofs last?

Why is modified bitumen so popular for flat roofs?

Many people are using modified bitumen roofing for their homes, especially those who have slow-slope and flat roofs. This roofing material is considered to be one of the most reliable and popular because it is versatile, affordable, low maintenance, and long-lasting . But what is modified bitumen?

What is modified-bitumen roofing?

Modified Bitumen Roofing. Modified bitumen roofing is a roofing asphalt.

  • Development. Modified bitumen was developed because oil refineries had figured out ways to use more products from crude oil.
  • Uses. Modified bitumen roofing was designed for use on buildings that have a low slope or flat roof.
  • Advantages.
  • What is modified bitumen roofing?

    Modified bitumen is an asphalt-based roofing system designed to withstand harsh weather conditions and harmful UV rays. It has two layers, that is, a base sheet, and a cap sheet. The base sheet is mostly self-adhered to the roofing substrate, whereas the cap sheet is cold-adhered, torched down, or self-adhered.

    What is SBS modified bitumen?

    SBS modified bitumen roofs or styrene butadiene styrene roofs are made by modifying the asphalt in a modified bitumen roof. This forms a polymer mesh inside the bitumen giving it rubber-like consistency.