When it comes to commercial buildings, roofing can be a bit more complex than in the case of residential buildings, raising many questions. Read on and learn more about it.
Types of commercial roofing installed by Bentonville roofing companies
Typically, commercial buildings are covered with low-slope roof systems that can be classified into several types:
- Singly-ply roofing systems
- Built-up commercial roofs
- Polymer-modified bitumen sheet membranes
- Spray polyurethane foam
- Commercial metal roofing
The first type – singly-ply roofing systems – is the most commonly used roofing system installed on commercial buildings, in the United States. Single-ply roofing includes several sub-types such as PVC roofing systems, Ethylene propylene diene monomer or TPO; their popularity is due to the durability and the balance price-quality. These materials used in single-ply roofs are typically very resistant in different weather conditions and variations (snow, rain, wind and UV rays) and most manufacturers offer warranties up to 30 years; some of these materials are expected to outlast the warranty period when installed correctly. Single-ply roofing systems are typically lightweight, available in white (cool roofs), they require minimum maintenance and repairs can be performed quite easily.
However, if we were to choose the most durable type of roofing material for commercial building, the answer would be metal roofing. Metal is on the rise among roofing materials because of its particular durability and versatility, but unlike single-ply roofing systems, it requires at least 4% slope and is significantly more expensive.
Spray polyurethane foam is a material that offers exceptional insulation, being also lightweight, flexible in different weather conditions and affordable. However, unlike metal roofs that come with a 50+ year warranty, SPF has to be recoated every 10-15 years in order to last.
Is there any sustainable commercial roofing option?
Of course there is. Most roofing contractors offer green alternatives that abide by the current standards and include: roofing options with high R-value, made from eco-friendly and recycled materials, vegetative roofs etc.
Is the R-Value in commercial buildings the same thing as in residential buildings?
Yes. The R-value measures the efficiency of the insulation against radiant heat in any type of building.
What about cool roofing or white roofing? Are they available for commercial buildings?
Cool roofing or white roofing reflects the heat instead of absorbing it, which translates into reducing the cost of cooling a building, tax incentives and reducing the hot temperature in urban areas. These options are available for both residential and commercial roofing.
How much do commercial roofing systems cost?
The price varies according to many factors: square footage, the roofing type etc. An accurate estimate can be obtained only from Bentonville roofing companies.
What are the building codes in place for commercial roofing?
Again, your local contractor should know all about commercial roofing standards and local building codes, considering that respecting them is their legal obligation. These standards are enforced by government agencies and organizations such as International Code Council, American National Standards Institutes, American Society for Testing and Materials, National Fire Protection Association and more.