PVC Versus TPO – What is the Difference?

PVC Versus TPO TPO and PVC have a lot in common. Both are heat weldable roof systems that are typically white in color and have been around for a while. Their specifications are also similar and both roof systems come with warranties varying from 15 – 30 years in length. In addition, most manufacturers can make TPO and PVC in a variety of colors, sometimes even custom colors. So what’s the difference? Polyvinyl Chloride, PVC, is known for being one of the original single-ply roof systems and is typically a rigid product. It was first introduced to the United States in the 1970s and initially had a bad track record. Think of a PVC pipe or PVC trim on a house: that is PVC in its natural state. However, in order to make PVC flexible, plasticizers are added to the membrane. Problems can occur from the addition of these plasticizers when they leach out of the membrane in a process called “plasticizer migration.” This causes the PVC membrane to shrink, shatter and crack over time. In fact, some of the first generation PVC roof systems, which were not reinforced, would completely shatter like glass.  Today, modern PVC roof systems manufactured by reputable companies have greatly reduced the problem of plasticizer migration. In many cases, this problem has been reduced from entire roofs failing to just […]

Installing A Greener Commercial Roof For Your Business

Installing A Greener Commercial Roof For Your Business Installing a greener commercial roof for your business will save you money. Isn’t that nice to hear when you are considering your roofing options? The good news continues as the long-term savings can be substantial. Less heat loss, better heat reflection, and more control over running the AC will put more money in the company’s pocket over the years.At Chaffee Roofing we know the benefits of installing a greener commercial roof. Clients appreciate the quality of our work and make use of Chaffee Roofing’s many decades of experience. We use our knowledge of greener roof materials to determine which one will work best on your roofing project. This is why we believe TPO is the best commercial roofing material to enhance your green credentials. Let’s take a closer look behind our reasons. TPO is white and reflects the heat In our New England climate, you could be running the air conditioning from late spring to early fall. Energy use is a big enemy of the environment, and the HVAC is a significant expense in any company’s budget.TPO is available in white, which will reflect the heat. The less heat absorbed from the sun, the less you need to run the AC. This can be significant with a large commercial roof. Also, by reflecting the UV rays of […]

What Makes TPO Stand Out Among Other Rubber Roofing

Flat rubber roofing is the perfect solution to commercial, flat roof problems. It is durable, easy to maintain and will last for many, many years. At Chaffee Roofing we always have clients asking us to recommend a flat or rubber roofing product for their commercial roofs. Thermoplastic Polyolefin (TPO) is almost always discussed. We put together this post to show why TPO stands out among rubber roofing varieties. Top reasons TPO stands out as a rubber roofing solution are: Low-cost, yet high quality White color reflects the sunlight It has heat-welded seams and flashings, the strongest technology in the industry Resists the growth of mildew and corrosion Let’s take a closer look at each point. Low-cost, yet high quality A big appeal for any roofing project is the cost of the raw material. TPO is the least expensive flat or rubber roofing material on the market, sometimes by a decent amount depending on what other products are being proposed. When you are doing a commercial installation, involving a large roofing area, the lower cost can be very attractive, especially since you are typically receiving the same warranty as competing products. Low cost does not mean low quality. TPO is a top-quality roofing material that has been around for over 40 years. White color reflects the sunlight A big problem for many companies is that a […]

6 Reasons TPO Roofing Is Better Than PVC

You would be hard pressed to tell the difference between a TPO roof and a PVC roof from a distance. Both substances look the same; they are usually some shade of white, and contractors use them on similar roofing projects. Clients often ask us which is the better option and at Chaffee Roofing we tend to come down on the side of TPO. The next questions always begin with a why. Why is TPO better than PVC? Why does Chaffee Roofing think it is better? Why not PVC? To answer your questions we compiled these six reasons why we believe TPO is better than PVC: Puncture Resistance is generally Greater in TPO In Cold Climates PVC shatters Environmentally TPO is A Better Choice TPO Holds up better Over Time PVC shrinks over time TPO Is Cheaper Than PVC Let’s take a closer look at each point to see why we prefer TPO to PVC for your roofing project. Puncture Resistance Is Greater in TPO When you put a roof on your building, or buildings, you want it to last. You do not want it puncturing easily, especially when you have a large area to cover. TPO, depending on thickness, is very puncture resistant and is superior to standard PVC at every depth. Stormy conditions drive branches and other debris at high speeds onto roofs. A […]

Comparison of Roofing Membranes

There are many choices to make when you are looking to replace your commercial roof. Due to the number and complexity of options facilities managers often leave this decision to their roofing contractor. Other times, architects will decide. But arming yourself with this knowledge will give you the opportunity to ask pertinent questions. Flat roof systems are long term capital investments that will protect your building for decades to come. Making sure you’re getting the most out of your hard-earned dollars is just a sensible thing to do. Bear in mind that the best product in the world will still fail if improperly installed. Success is almost always a collaboration of (1) a quality product installed by a (2) quality commercial roofing contractor. If you remove one part from that equation it is generally unreasonable to expect that you will get the best results. Remove both from the equation? Well, I’m sure you can do the math. The following are some points for comparison in commercial roofing products: Breaking Strength A majority of TPO roofing systems that are installed are mechanically fastened to the roof deck. Breaking strength is a critical measurement of a sheet’s strength if the membrane is ever subjected to extreme forces, such as excessive wind, against the fasteners that hold it in place. The ASTM breaking strength test consists of a […]

Benefits of a Mechanically Fastened TPO Roof

Single-ply roofing systems are typically installed one of three ways: fastened mechanically to the roof deck, ballasted with stone or fully adhered with an adhesive. This post looks into the benefits of a mechanically fastened TPO roof. The most important fact is having a good, clean roof substrate, and keeping any loose debris clear of the membrane before installation. Mechanically fastened roofs are by far the most common, dominating around 80% of the market. They can be installed faster and at a lower cost. Builders like them because they can be easily inspected by the manufacturer, who can quickly validate the workmanship by verifying the fastener pattern and their proper installation. On top of most buildings is a metal deck, then a layer of insulation, then the roof. When installing mechanically attached roofs, the TPO membrane roll is laid down and then the screws are driven directly through the insulation boards into the metal deck below. Typically the screws are drilled in at the edge of the membrane roll then covered with the edge of the next sheet as the rolls are successively put down. A watertight seal is then created by heat-welding the membranes together with a hot-air gun. This seals any gaps and creates a single, flat, waterproof surface. There are many benefits to a mechanically fastened TPO roof, which include: Obtainable with […]