Commercial Roofing PVC Products

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 What are the types of PVC roofing available? 

     The biggest types of PVC (poly vinyl chloride) roofing products are TPO or TPC which are 'Double Coated' sheets. These sheets have a PVC layer on both sides of the sheet.


     Commercial roofing sheet products are made from multiple layers of PVC with additives to enhance its characteristics and reduce its costs. Most sheets are made in rolls about 50 feet long by 15-20 feet wide, but there are also smaller 4x8 sheets available (for example for installing over existing metal roofs).
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     The way that commercial roofing is installed depends on whether or not there is an 'underlayment' designed to catch and hold water away from the membrane (roof sheathing) below it. In cold climates some manufacturers offer GPM 20-25 drainage underlayments, which can significantly increase the life of the membrane, and indoor air quality.

     A roofer installs a commercial roofing sheet by first 'nailing' or 'stapling' the sheets to the roof sheathing (usually plywood 4'x8'), then wrapping overlapping amounts of sheet metal along the seams to seal it and protect it from water intrusion. Some roofers leave small gaps between panels so that any ice that forms doesn't damage adjacent panels. This is especially important in cold climates where heavy snow loads can cause significant problems. When installing a new panel over an existing one there are usually no problems with this method, but when removing an old panel, the underlying layers should be kept as intact and undamaged as possible without compromising the seam sealing on both layers being worked on.

     No underlayment is needed or recommended in warm climates unless there are significant snow or ice loads, and roofers have to watch out for thermal expansion as they nail the sheets into place.

 Why do commercial roofing contractors use commercial grade roofing materials? 

Palm Beach County Roofing Contactor Installation of New Roof
      Roofing contractors use commercial roofing because of its long life (50-80 years), light weight, ease of installation, and low maintenance. Because it is designed to 'breathe' like a traditional clay/tile tile roof, air quality inside the building improves when compared with asphalt shingle products that do not allow ventilation of indoor air. In addition some types of TPO sheeting will easily pass fire testing requirements which can be an important factor for many institutions, including schools, hospitals and senior living centers.

     When dealing with high winds or wind driven rain, it can give you an extra layer of protection by itself; but for added insurance against certain types of hazards like UV rays and chemicals found nearby lakes, rivers & oceans; get one that is designed to work with acrylic coatings .
     The biggest downside to using this type of material is that it requires a lot more prep work prior to being installed over flat roofs (which have a membrane already installed underneath). When dealing with high winds or wind driven rain, it can give you an extra layer of protection by itself; but for added insurance against certain types of hazards like UV rays and chemicals found nearby lakes, rivers & oceans; get one that is designed to work with acrylic coatings regardless of if it's installed on a home or commercial building.

 What types of commercial PVC products are available? 

     The PVC type of commercial roofing maintenance material comes in both sheets and tiles (as well as being perfect for slopes), there are several advantages including the fact that it does not require adhesives/fasteners to hold it onto surfaces; making it a highly attractive choice if your product will be exposed to prolonged weather conditions (such as exposure to water waves). But because this type of roofing material gets damaged easier than PVC tiles, it does not do as good of a job at protecting surfaces from water penetration.

     With a warranty so if you experience problems during its lifespan, you would need to contact the roofing manufacturing product company directly regarding possible solutions. Check out the excellent information on Commercial Roofing Solid Sheet Membrane.