Like Your Skin, Roofs Need Sunscreen Too.

Your skin is a membrane that protects the underlying tissues and organs from the outside. However, prolonged exposure to the sun can damage your skin, which is why you wear sunscreen. The purpose of sunscreen is to protect your skin, the membrane, from damage. It’s permeable, so you can still sweat, and it’s applied relatively thin and needs to be reapplied as needed.

Liquid roofing products are similar to this skin and sunscreen analogy. Not all liquid-applied roofing products offer the same coverage. Just like sunscreens, what works for one building may not work for another. Some may require a higher SPF and more frequent reapplication.

There are various sunscreen options such as spray, rub-on, mineral-style, deodorant stick, skin-tinted, and moisturizing varieties. Additionally, there are multiple roof sunscreen or coating options available.

Some liquid-applied roof products work great as coatings and are applied in thin layers (20-30 mils) to protect from UV degradation. They are permeable and reflective, helping lower the roof temperature. However, they require frequent re-coatings and touch-ups as they are not durable, tough, flexible, or long-lasting. Nonetheless, they are effective for protecting membranes (skin).

Then there are liquid-applied roof products that work great as membranes. They are thick (50-80 mils), durable, flexible, strong, and impermeable and serve as a primary barrier separating the structure from the elements. Some are reinforced, some are multi-layered, but the intended purpose is the same. There are no seams; they are fully adhered and self-terminating. These liquid-applied, seamless membranes should act more like skin than sunscreen.

Reminder: always wear sunscreen as it provides critical protection and adds years to your (roof) life.

Click here for the original article, written by Triton’s Vice President, Dustin Books.

           

 

 

 

Like Your Skin, Roofs Need Sunscreen Too.

Silicone for Industrial Roofs? Bad Idea. 

The Evolution of Rubber

Silicone for Industrial Roofs? Bad Idea. 

While liquid-applied roofing systems as a whole continue to rise in our industry, silicone coatings continue to rise as well. I hate to be a naysayer and publish an article that could be perceived as a negative view on a particular product, but I don’t view it that way. Industrial and institutional facilities are at the core of our business and providing appropriate, sensible information in order to make good roofing decisions is a positive thing. Roofing products on industrial facilities are exposed to a different set of conditions, beyond Nature, and industrial roofs are used differently than a standard commercial facility. So why are silicone products a bad idea for industrial roofs?

 

SAFETY

Let’s start out with the most important, physical and life safety. Installing a silicone roof coating system on an industrial roof is unsafe. Silicone is extremely slippery, even when it is dry, and increases the risk of someone falling and hitting their head or becoming injured. I’ve witnessed it firsthand on a silicone-coated roof and a TPO roof. This increases the liability of the building owner and sets up HVAC technicians, maintenance workers, and other tradespeople for potential injury. While silicone can be “granulated” to be more slip-resistant by broadcasting granules into the surface, this is not a common practice because the granules end up causing the silicone coating to split and tear. It also adds cost and results in greater dirt pick-up, meaning it is back to a slippery surface after a few years.

Slip-resistant walkways and walk pads are standard on industrial roofs, but everyone is fully aware foot traffic outside of these areas is necessary and common. They cannot be relied on or expected to keep people safe. Coating an industrial roof, or any roof with foot traffic on even a semi-annual basis, with silicone is not worth the risk. There are far too many safer options.

 

REPAIRS & MAINTENANCE

Industrial roofs are unique because they require substantially more maintenance and repair work. Imagine a factory where a new vent stack is added through an existing roof. This roof had been coated with silicone and now the new penetration needs to be properly flashed in. You have one option: silicone. And you have to make sure it is the right kind of silicone, use reinforcement fabric, and ensure it will properly bond to the existing, aged silicone. The next week, a technician accidentally damages the roof while working on a piece of equipment. The damage is extensive and requires a small section to be completely removed and replaced with new insulation. How do you flash the existing membrane under the silicone into itself? Without removing some silicone, you can’t, because nothing can be overlapping over the silicone (even if you screw it down). The roofing contractor must do the full repair with only silicone. It’s just not good roofing practice.

Nothing sticks to silicone but more silicone. When you re-caulk your bathroom tub, do you apply silicone caulk over the existing silicone caulk? No, it has to be removed and re-caulked. Once an entire roof is coated with silicone, or even if a silicone patch is made, nothing will adhere to it. This ties the building owner to silicone until the roof is completely replaced. Emergency leak repair? Nothing can be used except silicone. An industrial roof needs to be able to be efficiently and quickly serviced by a variety of roofing products, from emergency patches to flashing in new penetrations or curbs.

 

TEAR STRENGTH & DURABILITY

Silicone has become popular as a similarly priced alternative to acrylic because it has better resistance to ponding water and is quicker to apply. But industrial roofs take a beating. This includes foot traffic, equipment servicing and changes, Mother Nature herself, and sometimes harsh chemicals. Silicone’s tensile strength and elongation is a little higher than an acrylic, but its tear strength and dimensional stability raises a red flag. If cured silicone film comes under stress (damage, foot traffic, structural movement) and tears, the tear easily and quickly continues to progress through the film. I compare it to a piece of cheese. When a tear begins in a silicone film, it continues to split with little force, like tearing a piece of cheese in half. I am hearing more and more from contractors about these continuous splits happening throughout the country. How is this repaired? You guessed it, more silicone.

While there may be a place for silicone roof coatings in our industry, it is my professional opinion it is not a feasible, smart option for industrial, or institutional, roofs. There is no justifiable reason to install a slippery, unsafe material on a flat surface over these types of roofs. And with the need for roof systems that are easy to repair and maintain, without being easily prone to damage and tears, there are much better options to consider.

 

Related Articles

Like Your Skin, Roofs Need Sunscreen Too.

Silicone for Industrial Roofs? Bad Idea. 

The Evolution of Rubber

The Evolution of Rubber

At Triton, rubber is our game. A non-stop game of building upon the fascinating history of rubber products with the goal of engineering it in ways the world has never seen. Our team has 45+ years of experience formulating rubber products, both liquid and solid forms. With that knowledge, we’re disrupting the construction materials industry with liquid-applied rubber technologies. How’d we get here and why?

 

History

As early as the 1600’s BC, indigenous people of South America had discovered a white, honey-like substance “crying” from their trees. This substance was used to make bouncy balls for games and to glue wood handles onto tools or weapons. Once they discovered its waterproofing properties, it was even used to waterproof clothing. The name of the first major civilization in Guatemala and Mexico even was called the “Olmec”, meaning “rubber people” in ancient Aztec language.

 

There’s a rumor that Christopher Columbus witnessed rubber in Haiti in the 1490’s when watching natives play with a funny rubber ball. Or stories of Europeans initially thinking rubber was “witchcraft” due to its extraordinary properties. It was flexible, stretchy, adhesive, and waterproof.

 

When rubber was introduced to English society in 1770 by Joseph Priestly, it gained its current name due to its ability to “rub” out pencil markings. In the 1830’s, a man named Charles Goodyear became obsessed with the material after purchasing a rubber life-preserver. His mind began to dream of all the possibilities. He won a contract with the U.S. Government to manufacture rubber mail bags, but he had a problem. The material became sticky when hot and stiff when cold, resulting in the bags deteriorating rapidly.

 

In 1839, Mr. Goodyear claims to have accidentally dropped rubber and sulfur on a hot stove, causing it to char like leather, but remain elastic and pliable. To his surprise, it didn’t melt, but actually hardened with more heat. This was the first U.S. discovery of “vulcanization”, which is the process to cure the entire mass of rubber. He named it after Vulcan, the Roman god of fire, and patented the process in 1844. However, this story is heavily disputed because, at the same time, a British scientist named Thomas Hancock claimed to have discovered vulcanization first in England. Historians say he shared his discovery with Goodyear.

 

Rubber now had industrial applications and demand skyrocketed worldwide. Because farmers in Brazil were abused and treating poorly at the hands of greedy men, they started destroying trees. Eventually, rubber tree seeds were transported to Southeast Asia, where most of our natural rubber comes from today. In 1889, John Dunlop of England produced the first successful bicycle tire and later the first automobile tire.

 

In the early 1900’s during the first World Wars, chemists worked tirelessly to invent synthetic rubber, to reduce dependency on natural rubber, and in an effort to adjust its physical properties. The Russians were the first to develop a synthetic rubber, called polybutadiene, and the Germans came later with Buna-S (Styrene Butadiene Copolymer). In the U.S., a government-led research program led to the invention of SBR (Styrene Butadiene Rubber).

 

Then things really started to get exciting, as companies developed new rubber technologies at light-speed. In 1930, DuPont invented Duprene (now called Neoprene). In 1934, Germans invented the first oil-resistant rubber called Buna-N (Perbunan). Then butyl rubber in the 1940’s, Hypalon, Viton, and Polyurethane in the 50’s, and EPDM (Ethylene Propylene Terpolymer Rubber) in the 60’s. Then came thermoplastic elastomers, which behave like rubber but soften like plastic when heated (think PVC, TPO). As technologies evolved, properties were improved. Better resistance to UV, weathering, fire, chemicals, punctures, and more. Think about how rubber affects our daily lives, from our vehicles to our shoes to our roofs.

 

Today

If you’re in the construction industry, you can see the correlations between these inventions and the evolution of building materials. Rubber is a natural barrier against water and, with further inventions, has become a heavily relied upon barrier against all elements, including chemicals. This is why Triton is building upon the foundation laid by others and inventing new ways of formulating, using, and applying rubber to protect structures all over the world.

 

Thousands of years ago, rubber fascinated and amazed people. That awe and wonder continues still today. The incredible potential of rubber has not yet been fully realized. What an exciting future.

 

 

Like Your Skin, Roofs Need Sunscreen Too.

Silicone for Industrial Roofs? Bad Idea. 

The Evolution of Rubber

Utilizing an Existing Roof for New Life

Our core focus at Triton is roof restoration. We take existing roof assets and add value to them with new seamless, durable rubber membranes rather than wasteful, disruptive and costly tear-offs. Over the last few years, we’ve worked alongside Hanging Gardens, based in Milwaukee, to take restorations one step further and convert existing roofs into green, vegetative roofs. Hanging Gardens is a supplier of green roof technologies and designs complete green roof systems.
One of our latest joint projects was in De Pere, Wisconsin, a suburb of Green Bay. The City Hall had a worn-out, mechanically-attached EPDM roof in need of repairs and replacement. They were also interested in the long-term benefits of a green roof. A structural analysis was done and confirmed the roof deck and structure could hold the added weight of a green roof. So rather than go the traditional route of tearing off the old roof, installing new expensive insulation and membrane, and putting on a green roof, Hanging Gardens informed them of the TRITOflex restoration option. It made perfect sense.

After a good pressure wash, TRITOflex was spray-applied by Zander Solutions, a Certified Triton Applicator, to 90 mils (2.2 mm) dry in one coat over the existing 9,000 sq. ft. EPDM roof. EPDM rubber is naturally a long-lasting, strong material. With the addition of TRITOflex on top, not only did it save the city money, but provides them a “bullet-proof” roof for decades. TRITOflex is impermeable and will withstand ponding water indefinitely, making it the ideal solution to keep a building watertight with a green roof over top.

The total system included the ILD electronic vector mapping leak detection system, drainage mat, filter fleece, growing medium, and sedum mats. You can see various phases of installation in the photos below. There is also a video taken by the local new station showing some of the green roof here: http://fox11online.com/news/local/green-bay/de-pere-city-hall-installs-green-roof. Here’s another hybrid green roof we did with Hanging Gardens in Milwaukee, on a new construction project here. This one included a revolutionary growing medium called the WaterGrip Brownie, another company we are excited to work alongside.

Benefits of a green roof versus a traditional roof include:

– Reduces stormwater runoff and improves water quality

– Reduces energy consumption

– Promotes biodiversity

– Helps reduce air pollution and improves air quality

– Increases overall roof life

Please contact us if you’re interested in learning more.

 

Like Your Skin, Roofs Need Sunscreen Too.

Silicone for Industrial Roofs? Bad Idea. 

The Evolution of Rubber

The Thick and Thin of Roof Coatings

One advantage of restoring an existing roof with a liquid product is that you utilize the existing roof membrane’s thickness by adhering directly to it. But how long will that really last? Does the “coating” provide any additional protection, besides from UV?

The graphic below shows required thicknesses to achieve a 20-year warranty with 3 of the most popular restoration system in the industry. The price per 1 mil is nearly the same for all three, but the physical performance, warranty coverage, and labor demand are vastly different.

The scenario I used below is restoration over an existing 60-mil PVC single-ply roof. Often these roofs are removed and replaced with the same, or even less, thickness. Instead of taking advantage of an opportunity to restore it and add value with a new liquid membrane, waste and disruption ensues. This, of course, is all dependent on the conditions of the existing membrane and insulation.

What do these warranties cover? What are the physical properties differences I refer to?

Which system do you think will last the longest in the elements? Just because a warranty has a high number on it does not mean it will protect the owner for that amount of time. Our clients believe the old saying still rings true, “you get what you pay for.”

There’s a reason we engineered the TritoFlex 2K system the way it is. Impermeable. Flexible and strong at the same time. It won’t breakdown under or absorb ponding water and it doesn’t require reinforcement, which eliminates elongation. If you’re interested in chatting further about this, please contact us 

 

 

 

 

Like Your Skin, Roofs Need Sunscreen Too.

Silicone for Industrial Roofs? Bad Idea. 

The Evolution of Rubber

TPO vs. Liquid Roof Recover

At Triton, we work with many clients who manage or own roofs with an existing Modified Bitumen membrane. When it comes to fixing leaks or prolonging the life of the roof, what are their options?

REPAIR – short-term patches and bandages to stop leaks

RESTORE – protect existing membrane from further UV damage with a reflective coating, after repairing and sealing deficiencies and leaks

RECOVER – new, complete waterproofing membrane installed over the old, avoiding a wasteful and costly tear-off

REPLACE – tear-off to the deck, install new insulation and a new membrane system

I’m going to focus on a specific case study in which the client was considering recovering their existing Mod-Bit roof with our TritoFlex 2K Rubber membrane system or recovering it with a mechanically-attached TPO single-ply membrane. To note, a fully-adhered (glued-down) TPO would not meet their wind uplift requirements and was too expensive. The TritoFlex liquid recover system and TPO recover were at similar price points, so what were the true differences between the two choices?

I’m going to simplify part of the answer. Rather than downgrade the roof with a thinner membrane, adding thousands of new leak points by holding it down with screws, a recover with a liquid membrane upgrades the roof and seals off conventional failure points.

The TritoFlex 2K roof recover system uses the remaining durability and waterproofing value of existing Mod-Bit roofs by bonding directly to it. A mechanically-attached TPO overlay requires a separation layer (fleece or boards) to prevent condensation and incompatibility with asphalt. It must be held down with thousands of screws through the old roof and into the deck. This creates thousands of new leak points that weren’t there before. These concepts not only apply to existing Mod-Bit roofs, but other existing roof types as well.

As the industry knows, TPO is very hard to re-weld and/or patch after it ages. New welds rarely hold and adhesive repairs are very temporary. Not only that, you’re relying entirely on the above-scrim waterproofing to protect the building. Once the scrim is exposed, watch out. Click here for a video showing how water can easily wick through TPO reinforcement scrim.

Whether you’re a contractor, an architect, a consultant, or a facility manager, it is important to be aware of all your options before you invest in a repair, restoration, recover, or replacement. Triton has engineered premium solutions for each of those roof scenarios that are backed with proven performance.

 

Like Your Skin, Roofs Need Sunscreen Too.

Silicone for Industrial Roofs? Bad Idea. 

The Evolution of Rubber