It's a highly-recommendable material; modified bitumen roofs is something even your most reliable Corpus Christi TX roofers will recommend if you're on a budget. Commercial roofs face more punishment than conventional roofing materials, which make their roofing materials as durable as residential roofing. Modified bitumen roof life expectancy often surpasses property owner estimates, but is it the best roofing material out there?
You've definitely seen other property owners still using traditional tar & gravel roofs. When you ask them, they tell you it's the most compatible roofing material for their property. This is true in many cases; some commercial properties can only carry a certain roofing material weight. If their owners choose to use a heavier material than the recent one, it might mean having to build supplementary supports.
However, to make a clear decision, it always helps to look at the different aspects of modified bitumen roofs and other roofing materials, not just modified bitumen roof life expectancy.
Everything About Modified Bitumen
Modified bitumen roof life expectancy is often shorter than tar & gravel and single-ply roofs even. But, why is it popular? For its shorter lifespan, it's extremely durable and resistant to weathering as much as asphalt shingle roofs can be. However, its life is a ticking clock, which means in its last few years, you might see much more wear and tear than normal.
Godfrey Roofing has a great article on modified bitumen's great usefulness below.
Manufacturing Method
Modifiers are added to standard roofing asphalt to replace plasticizers removed during the distillation process. Bitumen is reinforced with fiberglass or polyester fiber matting in order to increase durability and strength.
The two most common types are SBS and APP. The use of SBS (styrene-butadiene-styrene) increases the flexibility of the membrane and allows it to have stronger expansion and contraction capabilities. APP (attactic polypropylene) increases the aging ability of the roof system. SBS is often the more popular system as the synthetic rubber additive increases the products flexibility.
Application Method
Modified bitumen roof systems can be installed with the common torch method, asphalts, or cold adhesives. A standard SBS modified bitumen roof system is a two-ply system applied in rolls that overlap the edge of the previous roll.
Benefits (Continued)
Tar & Gravel: The Predecessor
Before modified bitumen roof life expectancy was a great discussion point among property owners, tar and gravel was the conventional form of built-up roofing. It uses different layers and tar to create a weatherproof and waterproof layer that acts as a roof.
Modernize has a great description about it along with its treasured benefits below:
Tar and Gravel Roofing
Tar and gravel roofs sometimes referred to as Conventional Built Up Roofing or BUR roofs, tar and gravel roofing is a system of flat roofing protection that is budget-friendly and can have a lifespan of up to 30 years. If you have a home with a flat roof, a tar and gravel roof may be a good option for you.
Tar and Gravel Roofing Lifespan:
- Up to 20+ years.
- Budget Friendly.
- Energy Efficient.
Cost (Continued)
Why Commercial Property Owners Find Single-Ply Roofs Appealing
Single-ply roofs are affordable if you're sticking with rubber roofs. However, their dark color isn't exactly the best when it comes to improving UV protection and insulation. On the other hand, it's more affordable and has a longer lifespan than the average modified bitumen roof life expectancy.
The Balance has a great description about all three membranes for your reference.
Types of Membranes
Single-ply membranes can be generally categorized into two groups: Thermosets and Thermoplastics. Thermoset membranes are compounded from synthetic rubber polymers, and the most commonly used polymers are EPDM, CSPE, and Neoprene.
Thermosets membranes are ideal for large roof areas, due to the fact that their manufacturing size is ideal to reduce or minimize seams. The majority of EPDM thermoset black membranes have carbon black as an additional component, which increases the UV protection; and in the case of white membranes, the manufacturer adds titanium dioxide, increasing the reflection property against UV rays.
Seams on thermoplastic single-ply membranes can be hot-air welded together to form cohesive laps. When thermoplastic membranes cool, they return to their original material type.
Two of the most commonly used thermoplastic single-ply membranes are PVC and TPO, both of them plastic-based materials. Thermoplastic membranes are usually manufactured to include a reinforcement layer, normally polyester or fiberglass that provides additional strength and stability. (Continued)
Knowing the capabilities and limits of modified bitumen roofs and other roofing materials can help you make the best decision for your commercial roof. Whether it's modified bitumen or other roofing materials, you'll need a capable and exceptional Corpus Christi TX roofer to install it and preserve its lifespan in doing so. Galvan Builders is a reliable commercial roofer that is the go-to of many property owners in the area. Contact us today to know more about what we can do for you!
Learn More Here: Modified Bitumen Roof Life Expectancy in Comparison to Others in Corpus Christi TX
Galvan Builders Construction Company
4938 Williams Drive,
Corpus Christi TX 78411
361-857-4341
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