While both materials may be used to create similar objects, the physical properties and environmental conditions in an application will ultimately dictate the appropriate material for your product design. This sprayed-in-place Polyurethane Foam (SPF) applies as a liquid and expands into a foam to create a seamless, single layer of roof insulation. $89.95. Almost nothing adheres to silicone (which is why its the material of choice for non-stick spatulas and many industrial lubricants), including PU coatings. Several acrylic coating manufacturers now offer instant-set materials. However, if theres enough moisture in the environment, water will eventually saturate the PU coating and go into and through the fabric, causing the coated fabric to leak. We currently use sil/sil fabric for the floor of our WindSaber tent, and the slipperiness of the fabric hasnt proved to be an issue for us or our customers. We use PE-coated fabrics on the 70D and 210D floors of our expedition series tents, because those fabrics start out with an extremely high tear strength, so the burliness of the fabric itself is more than enough to compensate for the reduction in tear strength by the PE coating. SSPC-PS 28.01, Two-Zinc-Rich Polyurethane Primer/Aliphatic Polyurea Topcoat System. Protects against moisture penetration. foot commercial roof, it will usually cost between $2.00 and $3.50 per square foot in materials and labor to install a typical Silicone Restoration Membrane System. Silicones are inorganic and will not be broken down by UV. Coating involves the application of a liquid that adheres to the fabric and then is cured, leaving the fabric waterproof. For R-value purposes, you need 1.5 inches of SPF. Polyurethane Coatings vs. Silicone Coatings Both polyurethane and silicone are elastomeric roof coatings that are designed to stretch and contract with the movement of the roof. (877) 532-3852 A Roofing Marketing Company Committed To Excellence Menu. Extra care must be taken to make sure its absolutely, positively bone-dry before you put it away for more than a day or two. However, silicone creates the strength it needs to handle stress from movement and prevent cracking. PRO TIP: Click here to view a detailed xylene vapor analysis report for one of our most popular polyurethane roof coating products. The reaction can be delayed as long as possible by storing your tent in a cool, dry, dark place, but sooner or later it will succumb to the stinky inevitability of organic chemistry. The more protection a roof has, the less often it will need to be repaired or replaced. Humidity alone can destroy coated fabrics and factory hot-taped seams. This hasnt been an issue in our experience. Polyurethane is available in three hardness scales, including Shore A, D, and 00. While this odorous vapor is not harmful, it can be quite unpleasant for a buildings occupants. This distributes the stress on the fabric over a larger area, thus reducing the force and making the fabric less likely to tear. Water takes a long time to penetrate PU, which is why PU works as a waterproof coating. A silicone restoration membrane is spray or rolled over an existing roofing system. or 4 interest-free payments of $22.49 with. This doesnt factor in much to most companies decisions to coat their fabrics with PU, as its assumed that something else on the tent will break or youll upgrade before hydrolysis becomes a problem. This problem can be addressed by applying very thick layers of PU, meaning the water will take longer to penetrate the fabric. First, it does not absorb water like PU coatings. Even if you can get rid of the smell, your coating is still on its way out and wont stay waterproof for much longer. Silicone coatings. Size: 1 Gallon (3.78L) 5 Gallon (18.9L) 8 Ounce Sample Jar. One is that it cant be seam-taped effectively. There are a few minor issues with silicone from a functional standpoint. Aldo Products Company - Acrylics, silicone, polyurethane, and butyl thermoplastics with coatings, primers and sealants in all chemistries. However, this has the disadvantage of adding considerable weight (coatings, especially PU coatings, are surprisingly heavy) and further reducing tear strength. A fabric is generally considered waterproof if its water column is around 1,000mm or more. All our sil/sil flies are sewn with double needle lap-felled seams. 1. Silicone roof coatings are extremely UV stable and reflect up to ninety percent of the sun's harmful rays. The silicone cannot be allowed to penetrate all the way through the fabric. SPF Spray polyurethane foam is sprayed as a monolithic layer over an existing system. Second, as we discussed in our. Thus, its a good roof coating for homeowners and business owners who want to reduce their carbon footprint. Reflective Roof Coatings This makes PU ideal for applications when there will be a lot of pressure exerted on a fabric, like if youre using a cot in your tent. The odor is a byproduct of a reaction called, . Home; . Check out this video that illustrates the ease of application of silicone flat roof coatings: Roof Coating Restoration . Silicone Conformal Coating Benefits Most typical silicone coatings have continuous operating temperature ratings of 200C. . This is far higher than most urethanes (125C). Minimizing the suns impact on the roofing surface not only helps to sustain lower energy costs, but it also reduces internal building temperatures and prolongs roof life. It can however be a confusing project to tackle, so getting the help of roofing professionals such as ABC Roofing will . Silicone is available in hardness levels between 10 to 90 Shore A. Polyurethane is formed through the chemical reaction between a polyol and diisocyanate. The products of this reaction are smelly, sticky, and are not waterproof. A few years ago, there were seven states that still used CPAI-84 as the standard for flame resistance in recreational camping tents. The result is that PE coatings often. This means one side of the fabric (usually the inside) is coated with PU and the other side is coated with silicone. 100% Silicone Roof Coating. This happens because of the way the coating affects the slippage of the fabric. Silicone is much more inert than polyurethanes, which means its less prone to react with other compounds (e.g. REDUCE ENERGY COSTS. Mold and mildew are some of the top tent killers out there. Because PU is much more common than PE, when the outdoor industry says polyurethane, theyre talking about polyester urethane, and thats what this section is about. Like all living things, they need water to survive, and when they have a moisture-rich environment like a waterlogged PU-coated fabric the mold can destroy the coating, leading to a foul smelling tent with compromised waterproofness. Aliphatic urethane coatings are extremely UV stable, dirt-resistant, and hold color longer, making them perfect for a topcoat. Spatulas, lubricants, sealant, greases, implants, wire insulation, and tents? choosing a selection results in a full page refresh. Over time, the PU coating reacts with moisture in the air (this process is accelerated by heat) and splits the polyester urethane molecule. The expansion into acrylic and urethane coatings expands the Gaco offering to become one . Laminates are discussed more in-depth in our. Each type is best suited for specific roofing environments and applications. In my experience, the same base fabric with a sil/sil coating costs 10-30% more than it would with a sil/PU coating. hydrolysis). The fly is almost always made of a woven fabric (learn more about wovens vs. nonwovens in our article on fabrics). At SlingFin, weve been using sil/sil nylon 66 ripstop in our expedition series tents since their inception. The aliphatic coating is used as a top surface because it is UV stable, stays clean, and holds color longer than other coatings. This gives the coating film the ability to stand up to the constant bombardment of water. Aliphatic offers a greater degree of UV protection. Silicone are hydrophobic so they repel water. Unlike some roof coatings, they are versatile enough to work well for nearly any roof, whether flat or sloped. Almost nothing adheres to silicone (which is why its the material of choice for non-stick spatulas and many industrial lubricants), including PU coatings. Despite its nostalgia, Old Tent Smell means that your beloved tent has entered its sunset years. It is uncommon to find PE coatings applied to lightweight fabrics. While a good scrubbing may temporarily get rid of some of the most offensive volatiles, its a purely symptomatic treatment. However, polyurethanes can produce stronger, more robust products with an almost endless range of physical properties and small to large, complex geometries. Because of hydrolysis, fabrics with PU coatings essentially have a shelf life. In the case of fabrics with low slippage, adjacent yarns are not recruited to resist the stress, which then gets applied to only one yarn at a time. When silicone coats the yarns in a fabric and is cured, as it does when it is applied as a coating, it makes it easier for the yarns to slide over one another. If youre a roofing contractor, then you have a variety of roof coatings to choose from. (814) 200-9269 ken@ . Urethane coatings are perhaps best known for having outstanding adhesion. Polyurethane Coatings vs. Silicone Coatings Both polyurethane and silicone are elastomeric roof coatings that are designed to stretch and contract with the movement of the roof. Some of the drawbacks are cost, application requirements, and the fact that there are only a few materials other than silicone that can be applied directly to the silicone surface. Factors like mold growth and hydrolysis (breakdown of the coating) are more prone to affect some coatings more than others. Sometimes you even have to call brands to get a straight answer. Single wall tents have a very limited use case as they manage condensation very poorly, even when made with waterproof breathable fabrics. As you can see in the video, urethane products have superior adhesion, but bright white silicone products will always provide the best reflectivity. First, waterlogged PU coatings take longer to dry out. When you try to tear a fabric, slippage allows the yarns to bunch up, rather than remaining fixed in position. Protect your surfaces with Liquid Rubber Polyurethane Deck Coating and preserve your property for years to come. We have never seen a case of mold growth on a silicone-coated fabric (again, this doesnt mean you should put your tent away wet! They are common for commercial roof restoration. When silicone coats the yarns in a fabric and is cured, as it does when it is applied as a coating, it makes it. Polyurethane acrylic coatings are durable, flexible, and can withstand ponding water. Aluminum Roof Coating Polyurethane Foam. Urethane vs Silicone Roof Coatings Adhesion Test In this edition of Tech Talk, Brian and Eric perform an adhesion test on our roof coating products Silicone 410 and Aromatic Urethane 520. The final issue, and the biggest threat to your tents well being, is increased susceptibility to mold and mildew. PE has several advantages that make it a great choice for floor fabrics. Because of this, there is almost an endless range of material options and design flexibility to meet exact requirements. Polyurethane coatings were initially developed to be applied over sprayed-in-place foam roofs. Thats not so easy with silicone, so the main drawback of silicone coatings is that its hard to get water columns much higher than 1500mm when youre using lightweight fabrics. Polyurethane roof coating systems form an incredibly durable and flexible monolithic membrane layer. The Society for Protective Coatings (SSPC) provides guidance about methods for applying polyurethane and polyurea coatings: SSPC-Paint 39 Two-Component Aliphatic Polyurea Topcoat. So here is a list of the top 10 best silicone roof coating. Storing your tent in a dry environment will also prolong the life of your tent. Silicone, on the other hand, is typically best for products that must withstand high resistance to extreme temperatures. I cant vouch for what other designers are thinking, but there are a few hurdles between silicones current level of use and the total market domination it deserves. They can effectively withstand the daily expansion and contraction (thermal movement) of roof structures as well as the damaging effects of ponding water. PE coatings stretch even less than PU coatings, and they all but eliminate slippage in the fabrics to which theyre applied. Founded in 2004, American WeatherStar is an industry-leading manufacturer and supplier of fluid-applied commercial roof restoration systems and products. Sometimes you even have to call brands to get a straight answer. Also, because the two coatings are not applied simultaneously, achieving the ideal thickness on each side of the fabric is a tricky balancing act. After years of searching, we finally found a 20D lightweight PE-coated fabric that was strong enough to use on the floor of our Portal tent. The silicone cannot be allowed to penetrate all the way through the fabric. Roof coatings have become a popular option among contractors and building owners for extending the life of a structurally sound roof. Silicone can resist intermittent temperatures of up to 230C, or up to 280C if a heat stabiliser is added into the raw material. The tube gets filled with water until it soaks through the fabric. If you select the right coating for a roof, youll help to ensure that it gets the strong, lasting protection it needs. Urethane roof coatings can also be sprayed on or rolled, giving contractors and property owners more installation options. The use of these materials in combination with coatings provides a long-term, economical repair system. FR chemicals can only be combined with PU and PE coatings, not silicone. Silicone coatings also provide excellent ultraviolet protection in extreme temperatures and harsh environments and can resist oxidation. Urethane roof coating systems are highly reflective and UV stable. There are two types of urethane roof coating: aliphatic and aromatic. NSF P151 approved for rainwater catchment. Sil/sil fabrics often have significantly higher tear strengths than the same fabric with a PU or PE. This distributes the stress on the fabric over a larger area, thus reducing the force and making the fabric less likely to tear. The first issue we have with PU is that it decreases the tear strength of the fabric to which it is applied. A quick aside so we dont anger the technically inclined and easily incensed: its unwieldy to test waterproof fabrics in this method, as you would need a really long tube (some coated fabrics can exceed 10,000mm, which translates to a 32 feet 9 3/4 inch tall water column). The roof will lose its reflectiveness over time. While a good scrubbing may temporarily get rid of some of the most offensive volatiles, its a purely symptomatic treatment. Urethane roof coatings are a highly effective roofing solution. The chemical properties that make silicone such a diversely utilized class of compounds (nonstick, chemically inert, hydrophobic) also make it an excellent material for waterproofing tent fabrics. Acrylic roof coatings, as well as solvent-based silicone coatings are amongst the best in the business for any roof. System. Occasionally, you may come across tents made with fabrics that are waterproof without the use of a coating. Ideal curing takes place with warm weather and low humidity. Gaco officially launches GacoFlex A47 acrylic, GacoFlex U91 aromatic urethane, and UA60 aliphatic urethane coatings to complete the brand's portfolio of innovative roof coatings, roofing systems, and waterproofing applications. Should that occur, it's an easy fix with any silicone-based seam sealer. After the fabric is dyed and finished, the fabric coater will apply one or more layers of coating (sometimes different coatings to each side of the fabric). When it comes to restoring and protecting commercial roof substrates, you would be hard-pressed to find a better solution than a silicone, Often referred to as the original elastomeric coating, acrylic roof coatings are generally a popular choice for sloped metal roofs. Thermoset polyurethanes, in particular, can be chemically engineered into a solid or foam and portray a wide range of physical properties and surface finishes through either a cast molding or Reaction Injection Molding (RIM) process. These days, this test is usually done with a device called a Suter, Tester, which uses a high-pressure pump to force water through the fabric instead of gravity, and then calculates the equivalent mm rating. Over time, the PU coating reacts with moisture in the air (this process is accelerated by heat) and splits the polyester urethane molecule. In a traditional double-wall tent, theres a waterproof outer layer called a, and a breathable inner tent body with waterproof floor and sidewalls. Polyether urethane is the other member of the polyurethane family that is used in outdoor applications. This is almost always accomplished by using waterproof fabrics. Roof foam is excellent for all climates . But youre not eating (much) food off your tent, so what makes silicone so great for tents? Due to computer monitors, colors may not be exactly as shown. Urethane roof coating is a solvent-based coating that is becoming more popular on the roofing market. Anchor Coatings - Various coatings for various substrates. For tents that will be exposed to large amounts of moisture, PU coatings are often used because they can achieve hydrostatic head ratings in excess of 10,000mm (thats a lot). As you would expect, ripping through five yarns at once is harder than ripping through one, and a fabric with more slippage will have a higher tear strength. Aromatic coatings, on the other hand, are less expensive and don't hold up well against UV rays, which is why they are often used as a base coat. However, it can be problematic if youre camping for a long time in especially wet areas or in a spot where water pools under your tent. Get your commercial roof evaluated by an American WeatherStar Approved Contractor today. SPF is a high density, rigid spray foam that may be applied to most roofing systems. This isnt to say that non-PU-coated tents should be stored wet. Thus, these coatings are good for clients who may be concerned about pooling water damaging their roofs. In this post, we will uncover the differences between silicone and polyurethane to streamline your material decisions. When I first encountered this on my dads 1970s North Face VE-24, I tried as many homespun cures as I could, to no avail. Its a fairly specialized technique but most premium factories have this capability. These combinations are often compatible with the most common types of roofing material, though they tend to be most often used on metal or polyurethane foam roofing. Also, all pre-application preparation should be completed in accordance with the roof coating manufacturers requirements. (pronounced GRAYGE). Its engineering also protects it from UV damage, which is why silicone makes a good outdoor caulking for use in things like masonry and around nonwood windows or doors. Apply over pre-existing elastomeric roof coatings, metal roofs, built-up roofing, mineral cap sheet, and weathered single ply membranes (EPDM, Hypalon and TPO/CPA). A quick aside so we dont anger the technically inclined and easily incensed: its unwieldy to test waterproof fabrics in this method, as you would need a really long tube (some coated fabrics can exceed 10,000mm, which translates to a 32 feet 9 3/4 inch tall water column). One is that it cant be seam-taped effectively. hbspt.cta._relativeUrls=true;hbspt.cta.load(3848240, 'dd6bdd64-b4d4-4efd-ba90-3f98dd3005f8', {"useNewLoader":"true","region":"na1"}); An informative site where you can learn all about product design using polyurethanes. These coatings have the excellent tensile strength to protect high-stress areas (walkways, penetrations, flashings, etc.) Polyurethane coatings provide the best rates of all coatings for impact resistance and for foot traffic. Some of the most common include neoprene, silicone, urethane, and latex/acrylic. When you try to tear a fabric, slippage allows the yarns to bunch up, rather than remaining fixed in position. This can decrease the energy reflective nature of the coating, making the building underneath more susceptible to excess solar heating which then . They are far less prone to hydrolyzing than PU coatings. The molecules that comprise organic polymers have carbon backbones, whereas silicones are built around a highly stable Si-O bond. Application The two types of roof coatings are applied by rolling and spray application. This problem can be addressed by applying very thick layers of PU, meaning the water will take longer to penetrate the fabric. Usually its nylon in higher-end tents and polyester in less expensive tents. The material formulations, uses, and application methods are all different, so facility managers should examine the manufacturers material data sheets to determine which product is suitable for their specific project. Not all coatings are acceptable or compatible on all roof surfaces. Another huge benefit of silicone is that unlike PU and PE, silicone coatings actually increase the tear strength of the fabric to which they are applied. An asphaltic rubber membrane system has been developed that can be applied in cold-process fluid-applied applications in use for life extension repairs. If it soaks in too far while its being applied, it can lead to coating adhesion failures when the PU is applied. A fabric is generally considered waterproof if its water column is around 1,000mm or more. It is also slippery when wet and tears easily in the right conditions. Application Both types of roof coatings can be applied via roller or spray application. Silicone coatings have gained market share on the commercial roof market in the last decade. This is a big deal. Conformal films' exceptional thinness is their greatest asset. Instead, WPBs utilize a microporous membrane that blocks water droplets but theoretically allows water vapor to pass through. 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