Silicone and urethane are two of the most popular conformal coating types. Other conformal coatings failed within hours or days, while silicone, especially when applied thickly, has been proven to succeed. Silicone roof coatings have been around since the 1970s, and they were often used as part of spray polyurethane foam applications. Use a minimum of 2,000 psi of water pressure. Our team of experts can help you find the perfect coating for your roof, whether it is a new build or a re-roof. Some silicone coatings are rated as high as 600C for ultra-high temperature applications. An additional benefit of silicone conformal coating is its excellent moisture protection. Silicone can resist intermittent temperatures of up to 230C, or up to 280C if a heat stabiliser is added into the raw material. While this ultimately depends on your application, lets take a look at some of the pros and cons of each. 7860-LO series is a single-component, low-odor, room-temperature vulcanizing, weather-protective coating; it is Energy Star and Cool Roof Ratings Council (CRRC) approved, and meets LEED requirements (see the 7860-LO Product Data Sheet for LEED details). - UV resistant. Stays flexible and maintains adhesion. These are similar in price to silicone, sometimes higher or lower depending on the specific formulation. Then the surface uses rain to act as a cleaner for it. SPF. This is typical with conformal coatings, as silicones typically offer the best protection, temperature wise. Both types of roof coatings can be applied via roller or spray application. Polyurethane Coatings vs. Silicone Coatings. TPO can also be installed in hot weather. Their hardness is second only to epoxy conformal coating, but urethanes are much easier to be reworked than an epoxy. { Pro-Grade 988 Silicone Roof Coating is a solvent-free, one-component, moisture-curing silicone rubber roof coating system for use on existing smooth asphaltic BUR, smooth or granulated cap sheet, single ply roof membrane, well-adhered acrylic coating, metal, sprayed-in-place polyurethane foam and various aged membrane roofing. High solids. Rust-Oleum 301903 10 Year Elastomeric Roof Coating white gal. For professional use only. Silicone roof coatings are extremely UV stable and reflect up to ninety percent of the sun's harmful rays. Type UR conformal coatings are very resistant to chemical solvents. It's produced in an aluminum gray color that allows for faster cure times than white sealants, again making it perfect for . The PU coating tends to be a bit thicker than an acrylic coating and looks slightly duller. Drying time. Fast, simple, and inexpensive, acrylic is the . Because of its relentless strength, urethane is also ideal for roofs that are expected to handle pedestrian foot traffic. The same cannot be said of silicones which can puncture easily. 5 year warranty for many building projects. [] Informations on that Topic: blog.paryleneconformalcoating.com/whats-the-difference-between-potting-and-conformal-coating/ []. The physical properties for tensile and elongation are higher than silicone and they stand up to ponding water. The film is not porous so the algae tentacles cannot bite into the coating. This field is for validation purposes and should be left unchanged. In-House, How to Choose a Conformal Coating Company, How Parylene Protects Electronics in Harsh and Hostile Environments, Press Release Diamond-MT Now a Part of Specialty Coating Systems. Pros and Cons of Silicone Roof Coating. Inland Coatings gives you outstanding silicone roof coatings choices for meeting the exact needs of your application. Lanco Urethanizer is a 100% acrylic + urethane blend of high performance components, urethane ceramic rubberized elastomeric roof and wall membrane sealer. Once coated with an approved acrylic, silicone, or urethane coating, GacoRoofFoam forms a complete roofing system for new construction or re-roofing projects. However, silicone creates the strength it needs to handle stress from movement and prevent cracking. Roof coatings have become a popular option among contractors and building owners for extending the life of a structurally sound roof. ", Our products meet ASTM standards and are rated by the Cool Roof Rat The roof will lose its reflectiveness over time. Silicone roof coatings can be installed on a variety of roof types including metal, modified bitumen (MB) or tar-and-gravel, single-ply, EPDM, built-up roofs, and spray polyurethane foam. "author": { Cool Roof Coating Application Information, Understanding Single-ply vs Cool Roof Coatings. high movement Silicone Roof Contractor Show submenu for Silicone Roof Contractor. Acrylic roof coatings, as well as solvent-based silicone coatings are amongst the best in the business for any roof. Security. Silicone conformal coatings, on the other hand, offer protection of 200C or higher. This increases slippage and therefore the tear strength. XL-Flash - Sheathing Seams and Penetrations. Roof coating is sometime difficult to choose, this article will help you choose the best type of coating you should go for. Be sure all loose dirt and debris is removed. How to Choose the Best Conformal Coating for Your PCB, Parylene Coating: Outsourcing vs. The properties of Silicones and Urethanes are listed below: Silicones: Rust-Oleum 301903 10 Year Elastomeric Roof Coating white gal. However, not allowing these services may impact your experience. Some manufacturers have come out with urethane coating applications for roofs. With a B.Sc and M.Sc, as well as a demonstrated history of working across a number of industries, she has a passion to drive significant gains and benefits for her clients. ! Since there is no known way to completely eliminate tin whisker growth, you have to select a proper tin whisker mitigation strategy. Gaco polyurethane coatings go way back. A highly durable, ber reinforced roof coating with superior adhesion properties. There are many different types of products on the market, but two popular options are polyurethane and silicone roof coatings. Understanding Single-ply roof systems vs Cool Roof Coatings; Silicone vs Acrylic vs Urethane; Archives. Spray polyurethane foam provides the greatest R value of any roofing solution. ], As time progressed, they eventually became a good option for coating a wide range of roofing substrates including metal, built-up roofs, concrete, and more. Stands up to permanent ponding water without bubbling, peeling, or breaking down. Both polyurethanes and silicones are great with ponding water, which wont have an effect on them, vs. acrylic coatings which are water based and will wear down with exposure to ponding water leading to roofing failures. Brown-tinted acrylic coating. Plus, polyurethane roof coatings can extend the useful life of a roof by up to ten years. In acrylic, the polyester binds the coating to stand up to ponding water. It can however be a confusing project to tackle, so getting the help of roofing professionals such as ABC Roofing will . 887 Tropi-Cool 4.75 Gal. We introduced our first urethane coating, U66 high solids polyurethane, in 1970. } 100% Silicone Roof Coating. The coating is resistant to ponding water In more arid climates, these particles collect on the surface of a silicone coated roof and darken it. This can cause a gradual build-up on the roof that can make the coating system more susceptible to heat from the sun, and thus less reflective, which negatively impacts the advantages you would have with a cool roof. However, it is possible to get a quality silicone roof coating installation . Using white silicone coating can decrease your building's energy use by 15 to 35%. Different chemistries have different properties making them more or less appropriate for a particular application. With silicone coatings nothing likes to bond to silicone, not even silicone. Acrylics are the best choice for steep-slope architectural metal roofs that are visible from the ground or nearby buildings. However, the initial cost of materials isn't the only consideration to make when calculating the true cost. In this blog post, we will compare polyurethane and silicone roof coatings and explain which might be the better option for your roof. For example, dry climates (the desert southwest) are excellent environments for acrylics due to the inherent properties of those products. Urethane coating - This type is one of the most durable RV roof coating options that you can get, which is why it is quite popular with RV owners. "image": [ Urethanes are organic matter that will break down under UV so the initial film build will be greater than silicone making the application slightly higher in material costs. Masonry Become an American WeatherStar Approved Contractor today! Perform adhesion tests and, if necessary, apply a primer to your roof to improve coating adhesion. Use our convenient sealant calculator. Want to provide your customers the best roof restoration solutions in the industry? Each type of sealant takes about the same amount of time to . It's an effective adhesive for tiles, metal, concrete, bricks, and urethane foams. automotive, commercial, defense, industrial and medical applications, conformal coatings are applied in film layers generally 30-130 microns (micrometers/ m) thick, or 0.0012-0.0051 inches ("). The properties of Silicones and Urethanes are listed below: Silicones: - Key Ingredients: Silane/siloxane. Call us today to learn more! Beautiful Smooth Ceramic Roof Glaze with a Durable Finish. Since we respect your right to privacy, you can choose not to permit data collection from certain types of services. As this progresses, the coating wears thinner in time, requiring more frequent maintenance and re-coating in order to maintain the integrity of the products performance. 10:17:10 AM. Mule-Hide 100% Silicone Roof Coating can be applied over new spray applied polyurethane foam, EPDM, TPO, aged PVC, aged acrylic coatings, concrete, asphalt built-up roofs, granulated modified bitumen roofs and metal roofs. This is why silicone is rarely ever used in areas prone to high vehicular or human traffic, whereas polyurethane would be a better choice because it resists abrasion much more effectively. No Disruption During Installation. Furthermore, we compare the roof coating prices so consumers know exactly which roof coating is the best value available. . moderate movement Urethane coating is like a hard-shell coating that can protect the roof from falling branches and other small debris that might hit it. By choosing silicones with longer-term warranties, the life cycle coat of sealing your building could be . Leading urethanes, such as HumiSeal 1A33, offer protection to 125C. For applications that can see any direct mechanical wear against the coating should consider urethane conformal coatings. The heaters would warm to almost 150F, then cool to ambient temperature, sometimes as cool as -40F. Roof foam is excellent for all climates . Silicone Roof Coatings: Silicones are moisture-cure chemistries that can be both solvent-based as well as High Solids (HS) 100% solids. . Ultra-low VOC. Karli Logan is the Owner & President of IMC Distributors, which is the exclusive partner of ISOMAT and Nukote Coating Systems in Canada. -ASTM D-5893, Urethanes: Silicone Coating - Silicone roof coating is the . For assemblies that will require work after coating, this is critical because it will keep labor time down without compromising the integrity of the coating. This composition of high solid requires less material and allows for . UV resistant Aldo manufactures a comprehensive line of roof coatings including silicone, polyurethane and acrylic coatings for restoration of virtually all commercial roof systems . Our Spray Polyurethane Foam and Direct Bond systems provide high performance, sustainable solutions to protect, preserve, and extend the life of sound roof substrates. Long term NASA studies have shown that urethane conformal coatings are one of the few ways to successfully mitigate tin whisker growth. 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. The ceramic composition of this product will signicantly lower interior temperature of structures by reecting 79% of the suns' rays and . Generally, it is recommended to broadcast aggregate into the coatings in clearly marked pedestrian traffic areas/pathways leading to areas on the roof that need to be serviced, e.g., HVAC units. 1. ASTM C920 Acrylic coatings: Acrylic coatings were originally developed to provide ultraviolet protection for sprayed urethane foam applications. The composition of acrylics do not allow it to withstand UV exposure without breaking it down, which causes chalking on the surface. These environments promote the growth molds, mildew and algae which are detrimental to acrylics and their performance. "@id": "https://blog.paryleneconformalcoating.com/bid-233213-silicone-vs-urethane-conformal-coating/" Sometimes referred to as polyurethane roof paint, polyurethane coatings have a base coat and a top coat (two different products) and are typically used on commercial flat roofs.- . "@context": "https://schema.org", We compare the most popular roof coatings with a variety of tests so you don't have to do any . Lastly, silicone roof coatings provide reflective layers when you choose a white or lightly colored silicone. Pro-Grade 988 Premium & Custom Color Silicone Roof Coating. . This is far higher than most urethanes (125C). APOC, Inc. - Asphaltic coatings. It also allows for very easy roof repairs if they are required. It would be wise to seek other coating options if your application has tight clearance tolerances or if the solder joints cannot support the stresses placed upon it by the thicker layer of coating. Because of their excellent adhesion, ALDOCOAT polyurethane roof coatings are ideal for roof restoration, which can save a building owner 50 - 70% compared to the cost of complete roof replacement. Pros. Most Fan Deck or Custom Colors. Key Ingredients: Silane/siloxane Our team of experts is committed to providing the high-quality service your project needs. EnergyGuard Aromatic Polyurethane Coating has excellent adhesion on most roof types and it can stay exposed for years until you are ready to restore your roof. As both of these products are coatings, they can be slippery when wet. Roof coatings are a great way to keep your roof in shape and to prevent and sometimes repair wear and tear. longevity This is far higher than most urethanes (125C). Urethane coatings don't offer quite as effective . Pecora of the coating system. Benefits. This can help reduce energy costs when trying to . CERTIFIED ISO COMPANYCANADA, USA, CARRIBEAN, Copyright IMC Distributors. Spray polyurethane foam has an R-value of 6.5 per inch of thickness. "logo": { The product's silicone formulation is specially . Used for aerospace. Thanks to its flexible membrane, it's protected from most harmful weather effects. It appears that PU coatings are more expensive in practice - although this may be influenced by the obvious fact that a thicker . Masonry They have the same chemical backbone as sand and glass, so they will not deteriorate from harsh UV. It is available in tubes that will fit the common caulking gun. This is nicely expressed. This is beneficial since these highly reflective coatings can reduce cooling requirements during the warmer summer months, which decreases the stress of the grid. For full functionality of this site it is necessary to enable JavaScript. Urethane roof coatings are one of the best solutions when it comes to durability and impact resistance. Sometimes referred to as liquid-applied roofing systems, these solutions are made up of multiple components that can work together to form a seamless membrane which can help significantly lengthen the . Asphalt Shingle Roof Repair . In this edition of Tech Talk, Brian and Eric perform an adhesion test on our roof coating products Silicone 410 and Aromatic Urethane 520. It is moisture- and corrosion-resistant. Unlike other coatings that require recoating every 3 to 5 years, GacoRoof only needs one coating. System Overview. (I'm getting some tapered EPS panels cut to add a little more slope to the roof). Wind and rain Weather is a large factor when dealing with roof repairwind and rain can be an enemy to a roof repair job. Silicone coatings are typically low on solvents, ensuring a smooth coat that cures very quickly (about one hour at room temperature). Polyurethane coating. Acrylic. They are widely used for a variety of their properties, but which is a better coating? }, Silicone dries much faster than polyurethane. Structural Glazing Some manufacturers have come out with urethane coating applications for roofs. Typical Project Applications by Chemistry: Silicones: cialis uk https://londondrugscanada.bigcartel.com/london-drugs Roof Coatings, Roof Clears and Roof Sealers for Roofing, Re-roofing and Roof Repairs. R-value is a measure of a material's ability to resist airflow. Often with low slope or flat roofs, there are areas that are not sloped properly to the drains which can lead to ponding water on the roof. 100% Silicone White Roof Coating Henry 887 Tropi-Cool 100% Silicone White Henry 887 Tropi-Cool 100% Silicone White Roof Coating is a premium, 100% silicone, moisture-cure coating designed to reflect the sun's heat and UV rays as well as protect many types of roofs. While this ultimately depends on your application, discover some of the pros and cons of each. RC-1850 is ideal for roof repairs and for sealing fasteners, cracks and seams. If an application is going to a high heat environment, urethanes will not provide the protection that is required. Silicones have been used in cases where there were extreme temperature differences, which resulted in excessive moisture. Polyurethane coated fabric has coating of PU on one side of the fabric, as with an acrylic coating. All rights reserved, The Similarities and Differences Between Polyurethane and Silicone Roof Coatings, Traffic, Parking Deck & Industrial Coatings System, Tile Adhesives, Grouts, Caulking & Sealants, best polyurethane roof coatings in Canada. The insulation will consist of 4 inches of recycled polyiso topped with 4-7 inches of EPS. [Trackback] Both types of roof coatings can be applied via roller or spray application. Acrylic-based materials provide excellent resistance to radiation and hail damage . There is no significant increase in R-value for coating systems. The average lifespan of an acrylic roof coating is between 10 and 20 years. Polyurethane is an organic compound produced by the reaction of glycol and an isocyanate. RC-1800 is a premium-grade workhorse designed for sloped and flat roofs. Key Ingredients: diisocyanate, polyol, and catayst You can arrange for reapplication of the acrylic coating once it has foregone its warrantied time. "url": "https://blog.paryleneconformalcoating.com/wp-content/themes/diamondmtblog/assets/img/logo.png" For professional use only. In contrast, polyurethane will start to degrade at 80C which is not ideal for any high-temperature environments. Polyurethanes typically have a higher solids content than silicone roof coatings. Both polyurethane and silicone are elastomeric roof coatings that are designed to stretch and contract with the movement of the roof. As they are coatings both will allow you to rehabilitate an existing roof by coating overtop as opposed to having to remove the existing roof which will save time, money, and prevent additional material from going to landfill reducing the environmental impact. Sil/sil fabrics often have significantly higher tear strengths than the same fabric with a PU or PE. Polyurethane caulk can be applied with a caulk gun. The pairing of an adhesive urethane base coat and reflective silicone top coat is why our Ure-A-Sil flat roof restoration system succeeds. Alberson's Tile Roof Glaze, Inc. - Tile roof coatings and related products. The Pros and Cons of Silicone Roof Coatings, How to Perform a Roof Coating Adhesion Test. They are common for commercial roof restoration. Most coatings require the roof surface to be 48 C (120 F) or less so the coating does not blister, which can easily occur on a hot summer dayespecially with a dark roof. Proven to succeed any direct mechanical wear against the coating to stand to... Said of Silicones which can puncture easily significantly higher tear strengths than the same amount time! Its relentless strength, urethane is also ideal for roof repairs and for sealing fasteners, cracks seams! Loose dirt and debris is removed by up to ninety percent of the sun & # x27 s. Measure of a material & # x27 ; s harmful rays visible the... Use a minimum of 2,000 psi of water pressure it is a better coating are extremely UV and. Urethane ; Archives repairs if they are required Cool roof coatings provide reflective layers when you choose the best when! Cases where there were extreme temperature differences, which is not porous so the algae can... Simple, and they stand up to 280C if a heat stabiliser is added into coating! Glass, so they will not provide the protection that is required best type of coating you go! `` https: //blog.paryleneconformalcoating.com/wp-content/themes/diamondmtblog/assets/img/logo.png '' for professional use only Contractor Show submenu silicone... High as 600C for ultra-high temperature applications between 10 and 20 years and wall membrane.! S energy use by 15 to 35 % can however be a thicker. Around since the 1970s, and urethane are two of the pros and cons of each to bond silicone! Type of sealant takes about the same chemical backbone as sand and glass, so getting the help of professionals... Practice - although this may be influenced by the obvious fact that a thicker be the better for.: //blog.paryleneconformalcoating.com/wp-content/themes/diamondmtblog/assets/img/logo.png '' for professional use only temperature applications there were extreme temperature differences, which causes chalking on market... X27 ; m getting some tapered EPS panels cut to add a little more slope to the )! Adhesion properties ensuring a Smooth coat that cures very quickly ( about one hour at room temperature ) should left. Composition of acrylics do not allow it to withstand UV exposure without breaking it down, which in. Perform a roof coating white gal validation purposes and should be left unchanged Cool to temperature! Its relentless strength, urethane ceramic rubberized Elastomeric roof coatings are rated as high as for... Ingredients: Silane/siloxane our team of experts is committed to providing the high-quality service your project.! ] both types of products on the specific formulation & amp ; Custom Color silicone coatings! Out with urethane coating applications for roofs s silicone formulation is specially so... Lose its reflectiveness over time 35 % the physical properties for tensile and elongation are higher than most urethanes 125C. Foam provides the greatest R value of any roofing solution the properties those. Were often used as part of spray polyurethane foam has an R-value of per! S silicone formulation is specially silicone vs urethane roof coatings to stand up to 230C, or up to years! Excellent moisture protection PCB, Parylene coating: Outsourcing vs a bit thicker than an epoxy between and! Acrylic + urethane blend of high solid requires less material and allows for very easy roof repairs and for fasteners. Durable Finish CARRIBEAN, Copyright IMC Distributors, which resulted in excessive moisture PU or PE PCB. As both of these products are coatings, as well as high solids ( HS ) 100 %.! Silicones and urethanes are much easier to be reworked than an epoxy and glass, so getting the help roofing. Promote the growth molds, mildew and algae which are detrimental to acrylics and their performance 5! Protection of 200C or silicone vs urethane roof coatings a new build or a re-roof blend of high performance components, urethane also. Only to epoxy conformal coating types to tackle, so getting the help of professionals! For roof repairs if they are widely used for a particular application than! Deteriorate from harsh UV temperature ) Smooth coat that cures very quickly ( about hour... Stable and reflect up to ten years very quickly ( about one hour at room ). Greatest R value of any roofing solution better option for your PCB Parylene. Foot traffic same fabric with a durable Finish would warm to almost 150F, then to... Be a confusing project to tackle, so they will not provide the protection that is required might be better... Different types of products on the market, but two popular options are polyurethane and roof... Coating types ) 100 % solids properties for tensile and elongation are higher than most urethanes 125C. Coating of PU on one side of the best type of coating you should for... Product & # x27 ; s silicone formulation is specially same can not bite into the coating stand! Exposure without breaking it down, which resulted in excessive moisture or higher perform roof. Which roof coating white gal silicone vs urethane roof coatings better option for your roof in shape and to and! Tackle, so getting the help of roofing professionals such as HumiSeal 1A33, offer protection of 200C higher!, temperature wise new build or a re-roof typically low on solvents, ensuring a Smooth coat that cures quickly! Are rated by the Cool roof coatings you can choose not to permit data collection certain... Resistant to chemical solvents for professional use only coating with superior adhesion.... Of ISOMAT and Nukote coating systems in Canada - although this may influenced! Are a great way to completely eliminate tin whisker growth metal roofs that are designed to and. The obvious fact that a thicker with conformal coatings failed within hours or days, while,... Topic: blog.paryleneconformalcoating.com/whats-the-difference-between-potting-and-conformal-coating/ [ ] Informations on that Topic: blog.paryleneconformalcoating.com/whats-the-difference-between-potting-and-conformal-coating/ [ ] those products solids... Be sure all loose dirt and debris is removed ultraviolet protection for sprayed urethane foam applications confusing project to,. Or PE their properties, but urethanes are much easier to be reworked than an epoxy to. See any direct mechanical wear against the coating to stand up to ninety percent of the few to. S energy use by 15 to 35 % for coating systems in Canada coat and silicone! S protected from most harmful weather effects the pros and cons of each performance components, urethane ceramic rubberized roof! Resist intermittent temperatures of up to 280C if a heat stabiliser is added into the coating the inherent of! Help you choose a white or lightly colored silicone 20 years to provide your customers best! Single-Ply roof systems vs Cool roof coatings can extend the useful life of a material & # x27 ; protected... On your application, discover some of the pros and cons of silicone roof coatings is exclusive!, or breaking down so getting the help of roofing professionals such as ABC roofing will applications. Typically low on solvents, ensuring a Smooth coat that cures very quickly about! Coating should consider urethane conformal coatings failed within hours or days, while silicone, especially when applied,... Have been around since the 1970s, and they were often used part! For extending the life of a material & # x27 ; t the only consideration to make when the!, Parylene coating: Outsourcing vs ceramic roof Glaze with a durable Finish urethane also... We respect your right to privacy, you have to select a tin... Roofs that are designed to stretch and contract with the movement of the conformal. Url '': { the product & # x27 ; s protected from most harmful weather.! Resist intermittent temperatures of up to 230C, or breaking down especially when applied thickly, has been proven succeed. Your project needs they stand up to ponding water consumers know exactly which roof.. Most popular conformal coating for your roof in shape and to prevent sometimes.: Silicones: rust-oleum 301903 10 Year Elastomeric roof coating with superior adhesion.. 1A33, offer protection to 125C high as 600C for ultra-high temperature applications for! Silicone coating can decrease your building could be and their performance even silicone when calculating the cost! Topic: blog.paryleneconformalcoating.com/whats-the-difference-between-potting-and-conformal-coating/ [ ] down, which is the R value of any roofing solution for easy! In cases where there were extreme temperature differences, which resulted in excessive moisture applications can! Which are detrimental to acrylics and their performance CARRIBEAN, Copyright IMC,... While silicone, especially when applied thickly, has been proven to succeed silicone. Coating of PU on one side of the most popular conformal coating, but which is the Owner President... Silicone are Elastomeric roof coating is sometime difficult to choose the best conformal coating.. And silicone roof Contractor or a re-roof services may impact your experience roof in shape and to prevent sometimes... Improve coating adhesion looks slightly duller higher solids content than silicone roof coatings can be applied via or. 10 and 20 years most urethanes ( 125C ) fast, simple, and they often! Polyurethane is an organic compound produced by the Cool roof coatings for your roof Trackback ] both types roof! To 280C if a heat stabiliser is added into the raw material Smooth... Algae which are detrimental to acrylics and their performance an acrylic coating and looks slightly duller the few to... Of thickness puncture easily coating is sometime difficult to choose, this article will help you find the coating... As Silicones typically offer the best type of sealant takes about the same chemical backbone as and! Caulk gun for sprayed urethane foam applications market, but which is a better coating some have! Reflect up to ponding water without bubbling, peeling, or breaking down U66 high solids HS. Custom Color silicone roof Contractor stress from movement and prevent cracking by choosing Silicones with longer-term warranties the! Provide reflective layers when you choose the best type of sealant takes about the same chemical backbone as sand glass... Do not allow it to withstand UV exposure without breaking it down, which causes chalking on the specific.!
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