The hot air-welded seams of a TPO roof are not only flexible but strong. In fact, they are up to four times stronger than EPDM seams, which use adhesive or tape. The drawbacks of TPO roofing stem from the fact that it is relatively new, as far as roofing and building materials go. The major issue that can arise from a poor TPO product is seam failure.
The most durable TPO membranes have high welding temperatures. TPO roofing can stand up to a great deal of heat and even lower your cooling bills in the summer. Not all TPO is created equal, and manufacturers are consistently changing their formulations to get the best results at the lowest cost. This means that you have to be choosy when you purchase a TPO roof system. You can make sure to get the most out of your TPO roof by choosing the best possible product and the best roofing contractor.
The thickness of the TPO membrane you choose should be at least enough for your specific application i. In particular, the top layer of your TPO membrane should be the thickest for the best performance and longevity. Your roofing contractor should be able to take precise measurements in order to install your TPO roof correctly.
The proper membrane width and spacing of fasteners must be determined by calculating the potential uplift load to your roof. The highest-quality TPO roofing materials are those that have a wide window of weldability. This means that each strip of TPO can be joined together more consistently, at many different temperatures, creating stronger seams. One of the benefits of roofing materials like TPO is that they come in wide rolls or sheets. The greater the width of your TPO material, the fewer seams your roofing contractor will have to make.
This means the roofing will be stronger and more durable over all, and it will also be a speedier installation process with fewer mechanical fasteners and joining processes required. The most important aspect of purchasing a high-quality TPO roof is choosing the right Bowie roofing contractor.
TPO roofing is a relatively new product, and less experienced Bowie roofers may not have the know-how required to choose the best formulation, brand, or type for your roof. TPO roofing has a unique installation process, which differs from that of other roofing materials. Mechanical fasteners and plates are typically used to secure the TPO membrane to the roof deck.
TPO membranes may also be attached to the deck, or to a layer of insulation material, using adhesives, but this is less common. Each additional sheet of TPO is installed slightly overlapping the last by a minimum of 1. Another important aspect is that roofing materials are normally exposed to chemical and pollution aggressions, and that constitutes another advantage of the PE, that it is resistant to almost all polar solvents, such as acids, alkalis, alcohols, and oil.
KOSTER is one of the oldest and few TPO manufacturers in the world and it has nearly 30 years of experience in the production of single ply thermoplastic roofing and waterproofing membranes. This gives us a solid experience that very few can offer.
Unlike the competitors, both top and lower layers are produced using the same quality material, giving the membrane a perfect UV stability throughout the whole thickness and ensuring the most perfect and homogenous welding of the seams. Toggle navigation. TPO Membranes. What is TPO? Though a reasonably inexpensive material to use, there are considerations to be made to obtain the best material at a fair price.
To get a cost-effective solution, take the following should into account:. With the proper maintenance and installation, single-ply membrane roofing can last from years. There are other benefits with single-ply systems, such as:. Insulation choices — Single-ply roofing systems exclude the insulation factor, so as a commercial roofing consumer, you have various options to select from for insulating a commercial roof.
Installation choices — There are choices for how you can install a single-ply roof. It can be fastened or attached right to a roof deck, as well as affixed with different adhesives.
It can even be welded through heat in more difficult spots on a roof, such as areas where protrusions, projections, and chimneys are present. Resists Corrosion — TPO is resistant to corrosion and disintegration when it comes in contact with various materials.
During the production process, the manufacturer adds fire retardant chemicals to the composition of the material. Single-ply membrane roofing has become one of the top roofing materials for most commercial facilities. There are savings to be had in its cost-effectiveness for businesses almost anywhere.
With the bright white reflective attributes of TPO, there is money to be saved on energy usage during the warmest months of the year. Utility consumption lessens, while the interior of a building remains cool. So, in spite of thickness, different TPO products weaken and deteriorate to the same degree. Also, the various compounds in TPO have changed over the years, which has made it challenging to determine precisely how long a single-ply TPO roof is going to last. An overall estimate puts the life of this type of roof at years.
The limited durability appears to be associated with the laminating process on the top layer of TPO products. This process can produce weak spots that cause disintegration as well as surface cracking and splitting. Another problem with TPO is the width of its rolls, as they tend to be small in their width.
These seams can cause difficulties when it comes to membrane expansion and contraction. Seams can loosen, and water can get into vulnerable areas of a roof. You just need to spend a little time researching various manufacturers, their performance history, and what guarantees and warranties they offer.
But after what happened last time, it might be cost-effective to try a different roofing system. There are more advantages of a spray foam roofing system , including how easy it can be installed. On a TPO roof that needed to be torn off, a spray foam roofing contractor would install a cover board and simply spray foam over that. Manufacturers do have a low VOC adhesive that has a reduced amount of solvent in it.
That does reduce the odor involved during the application, but it does not completely eliminate the odors involved in the adhesives. Mechanically attached typically require very little adhesive, if any. The odors do not stick around.
You can enroll into a maintenance program with a roofing contractor and they will check on your roof twice a year. Or if the TPO roof is beginning to show signs of failure, you can install a silicone restoration membrane system over top.
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