What are the different types of commercial roofing systems?
Types of Commercial Roofing Systems
- PVC (Polyvinyl Chloride) …
- EPDM Roofing (Ethylene Propylene Diene Monomer) …
- Modified Bitumen Roofing Systems: A modified bitumen roof combines asphalt and a unique chemical polymer for flexibility and temperature resistance. …
- Built-Up Roofing Systems. …
- Metal Roofs. …
- Liquid Applied Roofing.
What are most commercial roofs made of?
Many of today’s low slope metal roofs are made from corrugated galvanized steel – a steel sheet coated with zinc. Copper, aluminum, stainless steel and tin also are used in commercial metal roofing applications. Benefits to metal roofing including longevity, durability and heat resistance.
What are 5 common roofing systems?
Residential roofs can be made of asphalt, ceramic tile, slate, wood, and metal. … Asphalt shingle is the most common and generally least expensive roofing material.
What are flat commercial roofs made of?
Single-Ply Synthetic Membranes (TPO, PVC, and EPDM)
Thermoplastic Olefin (TPO), Polyvinyl Chloride (PVC), and Ethylene Propylene Diene Monomer (EPDM) are affordable materials for commercial flat roof types contractors highly recommend. They are easy to install, are affordable, and have a lifespan of 30-50 years.
What is the difference between TPO and EPDM?
TPO roofing reflects sunlight, allowing commercial air conditioners to work more efficiently; whereas EPDM has a dark surface, which in summer conditions will absorb heat, forcing cooling systems to work overtime. TPO offers reduced cooling costs and energy savings for facilities located in warmer climates.
What is a bur roofing system?
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. … They can also be used in combination with modified bitumen.
How thick is a commercial roof?
The most common thickness is probably 60 mils. (A mil is a unit of measure where 1-mil is equal to 0.001 inches. So, a 45-mil roofing membrane is actually 0.045 inches thick; whereas a 60-mil membrane is 0.06 inches thick, and so on.)
Why do commercial buildings have flat roofs?
A big reason why flat roofs are installed on industrial buildings is the lower cost. Flat roofs generally cost less than sloped roofs to install so that companies can keep construction expenses down.
What is bitumen roofing?
Bitumen roofs are one of the longer lasting types of flat roofing materials, easily lasting 20 years or more. Regardless of how the material is applied (self-adhesive sheets, hot-mopped asphalt, or cold-applied adhesives) the seams are usually melted together which help stop leaks. … Bitumen roof is also very durable.
What are the 4 types of roofs?
4 Types of Roofs
- Gable Roof. This roof type is known for its distinguishable triangular shape feature. …
- Mansard Roof. This roof type was adapted from the French and has a much steeper lower slope. …
- Flat Roof. This roof type may not be entirely flat but have a low-sloped pitch that makes them appear flat. …
- Hip Roof.
How many years does a roof last?
Your asphalt roof is about 20 years old
The life of a roof is how many years you get out of it. For a standard 3-tab asphalt shingle roof, that’s 25-years. As long as your roof has been properly ventilated and installed you should get pretty close to that 25 years of roof life.
What are the 2 most common roof types?
These are the most common types of roofs used on residential homes.
- Asphalt Shingles. Asphalt shingles are the most popular roofing material for homeowners today. …
- Metal Roofing. This type of roof is becoming more and more common. …
- Ceramic Tiles. …
- Slate Shingles. …
- Wood/Cedar Shake Shingles.
How long should a commercial roof last?
There are common commercial roofing systems that have lifespans anywhere from 10 to 40 years and they include the following: TPO roof system life expectancy – 22-30 years. EPDM roof system life expectancy – 22-35 years. Metal roof system life expectancy – 30-45 years.
How long should a commercial flat roof last?
A typical commercial flat roof membrane should last on average 20-25 years before needing to be replaced. On the shorter end it could need replacing in 10 years, and on the longer end, it could last even 50 or more years.
How many plies do commercial roofs usually have?
They are typically constructed of three or more layers of waterproof ply sheets which are sandwiched between layers of hot tar.