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To differentiate pure-silicone coatings from sil/PU coatings, they are most commonly referred to as, fabrics, which indicates that silicone was applied to both sides of the fabric. A good way to visualize this is to picture a tall tube with a piece of fabric stretched across the bottom end. The laminates youll usually see used in shelters are Dyneema Composite Fabric (aka Cuben Fiber) and waterproof breathable fabrics (WPBs) that are used in most single-wall tents. Since you need both a top coat barrel and also a base coat barrel to apply this to a floor, you must buy at least one pair of drums. They have excellent waterproofing properties. Some of the best and most common include; Polyurethane, Cementitious Coating, EPDM Rubber, Rubberized Asphalt, Thermoplastic, Bituminous Membrane, and PVC Waterproofing Membrane. Single needle seams will need to be sealed after construction with a liquid seam sealer. Fortunately, you can easily avail yourself of products that protect wood while enhancing its natural beauty. Different coatings have different properties that make them ideal for specific applications. PU can achieve high hydrostatic head ratings, it can accept fire retardants to meet bygone fire retardancy standards, its inexpensive, and it doesnt reduce the fabrics tear strength as much as PE coatings do. Liquid Rubber Polyurethane Deck Coating is a high-performance polyurethane elastomeric coating that cures into a waterproof membrane with excellent UV stability. For best results, apply the wood finish at room temperature, ideally between 65 to 70 degrees Fahrenheit. Unfortunately, once hydrolysis has begun, theres no stopping it. PE has similar characteristics to PU in that it can be combined with fire retardants and is applied in a similar manner, but with a few major differences that make it better for some applications and worse for others. In Stock at Store Today. Lyndhurst New Jersey 07071 While a good scrubbing may temporarily get rid of some of the most offensive volatiles, its a purely symptomatic treatment. So, go for the oil-generated options with the for outdoor use label from the manufacturer. PU coatings get in between the yarns, and lock them in place. Liquid membrane composes of polymer modified asphalt. While it is quite counterintuitive, PU coatings are actually hydrophilic, which means they will slowly, water if they remain in prolonged contact with it. Seam sealer (be sure to get the right type for your tent. The other big advantage to PE coatings is their great hydrolytic stability. 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. 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. This website uses cookies to improve your experience while you navigate through the website. . Being polyurethane, it is more durable than epoxy. Mold and mildew are some of the top tent killers out there. For a deep dive on UV damage and fabrics, check out this article. Chris Pottinger worked for 8 years as a senior tent designer for REI Co-op in Washington state. Second, as we discussed in our fabrics article, nylon will sag when it gets wet, so PU-coated fly fabric has the tendency to sag. The molecules bond together too tightly when the substance dries, creating a very tough and durable finish on exterior wood surfaces. There is one company that offers stuff sacks with seam-taped sil/sil fabric, but I've seen enough oftheirseam tape fail to make me think they havent perfected it yet. The membrane or coating layer is applied inside an outer fabric layer to form a single piece of material. Spatulas, lubricants, sealant, greases, implants, wire insulation, and tents? YKK zipper and easy organic cotton cord pull for ease and comfort. Under normal conditions, silicone is so hydrophobic (whens the last time you had to wring out a spatula?) Of the three coatings discussed here (PU, PE, and silicone), PU has the worst hydrolytic stability. 2023 Recreational Equipment, Inc. All rights reserved. ft. Water-based formula is nontoxic. When you try to tear a fabric, slippage allows the yarns to bunch up, rather than remaining fixed in position. Non-toxic, safe, and breathable barrier. If you need a perfect outdoor clear coat reflecting the natural wood grain of your woods, you can not choose a polyurethane matte finish. Apply the mixed epoxy with a roller. It does not store any personal data. Required fields are marked *. It is far less common than PU, probably because its more expensive and simply because its not as well known. Dont even think about it!). The fly isusuallymade of a woven fabric (learn more about wovens vs. nonwovens in, The fabric finishing process begins with an undyed, uncoated fabric, called. Polyurethane Waterproofing Treatment. Set up the tent and spray down the rainfly with clean water (if you just washed your tent, you dont have to wait for it to dry before applying a new DWR coating.). While it is quite counterintuitive, PU coatings are actually hydrophilic, which means they will slowly absorb water if they remain in prolonged contact with it. Finish and waterproof wood simultaneously with a stain-sealant combo. Brush the polyurethane onto the floor in a W-pattern until complete. Varnish (optional) Lacquer (optional) Polyester paint brush. TotalBoat Gleam Spar Varnish Polyurethane, Generally, polyurethane comes in two different forms . and still allows the requisite fire retardants to be mixed into the PU side to achieve CPAI-84 standard. If the PU is applied to silicone-saturated fabric it can peel off prematurely, leading to compromised waterproofness. Complete, effective waterproofing that encases the entire mattress. They are far less prone to hydrolyzing than PU coatings. Polyol acts as the base, while isocyanide is the reactor component. Polyurethane is made up of two components, base and reactor. Fortunately, there are a couple solutions for tents. While a single polyurethane coating is technically 100% waterproof, it's often necessary to apply two to three coats to ensure every spot is covered. These multitasking products add color while providing water resistance in a single step. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Its a fairly popular choice for floor fabric in expedition tents, where weight is less of a concern and long-term durability is paramount. We'll send you a few emails every week. Our pioneering and innovative coating system technology is some of the most advanced in the industry. Waterproofness, durability, and longevity are all intertwined with PE coatings, so its hard to address each characteristic separately. But varnish gives more tinted color only and needs more coats than polyurethane. With no franchise fees or royalties, starting a protective coating business or other ArmorThane dealer business is a relatively low cost venture. If youve been there, its time to shore up the waterproofness of your shelter. Naturally, they require extra protection against decay and damage. We have never seen a sil/sil fabric go bad. The amount of silicone that can be applied to a fabric is limited by the thickness of the fabric. Yes, you can do that. 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. When silicone coats the yarns in a fabric and is cured, as it does when it is applied as a coating, it makes it. Substrate and primer. Unlike polyurethanes (both PU and PE), silicone is an inorganic polymer. Polyurethane is formulated from oil or waterborne plastic resin, but varnish is made from pure resin, solvent, and oil. However, this has the disadvantage of adding considerable weight (coatings, especially PU coatings, are surprisingly heavy) and further reducing tear strength. Exterior woods experience much variation in humidity, temperature, sunlight, and wind, causing. Silicone-treated fabric takes a different sealer than polyurethane-coated fabrics. 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. Also, because the two coatings are not applied simultaneously, achieving the ideal thickness on each side of the fabric is a tricky balancing act. Another huge benefit of silicone is that unlike PU and PE, silicone coatings actually, the tear strength of the fabric to which they are applied. Polyurethanes are a broad class of polymers encompassing two of the three common fabric coatings: polyester urethane (PU) and polyether urethane (PE/PeU). 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. When you try to tear a fabric, slippage allows the yarns to bunch up, rather than remaining fixed in position. Pour a small amount of epoxy onto the flat plywood, and spread a thin layer over the entire surface using a roller or a squeegee. For this reason, most of our tent floors are made with sil/PE fabric. Seam tape is what keeps sil/PU or sil/PE fly fabrics from leaking through the needle holes created when the tent is sewn. This means one side of the fabric (usually the inside) is coated with PU and the other side is coated with silicone. Because the coating keeps the fabric dry on the inside, theres no moisture to support mold growth. FR chemicals can only be combined with PU and PE coatings, not silicone. Even if you can get rid of the smell, your coating is still on its way out and wont stay waterproof for much longer. All you need to pick the right one in a particular case is what we tried in our analysis to reflect. More technical outerwear, including products created with Gore-Tex, can range from 15,000 mm to 20,000 mm in column pressure. (Drying & Curing), All About Sanding Sealer Uses, How to Apply, Safety. As we have our. bottle waterproofs up to 85 sq. On the other hand, oil-based polys are more resilient against outside adversaries, in addition to UV blocking capacity. Sometimes you even have to call brands to get a straight answer. Polyurethane liquid membranes are also used for waterproofing. . choosing a selection results in a full page refresh. Therefore, you need to make sure that you get the right types of waterproofing materials for your individualistic needs. Its a fairly specialized technique but most premium factories have this capability. But youre not eating (much) food off your tent, so what makes silicone so great for tents? The result is that PE coatings often decrease the fabrics tear strength. Polyurethane, varnish, and lacquer are tried-and-true sealants with excellent waterproofing properties. have a close relation, instead of differences, with varnish. We've been sharing our passion for the outdoors since 1938. Expert advice from Bob Vila, the most trusted name in home improvement, home remodeling, home repair, and DIY. Laminates are discussed more in-depth in our. The propensity of a coating to undergo hydrolysis, or hydrolyze, is called hydrolytic stability. This means one side of the fabric (usually the inside) is coated with PU and the other side is coated with silicone. Lay your rainfly and/or tent floor flat and gently scrub off the flaking coating with rubbing alcohol and your sponge. People are more interested to know which polyurethane is the most effective than asking whether polyurethane is truly useful! Sometimes youll see misleading things like fly and floor are silicone treated, coated in a durable silicone repellent, or silicone-treated ripstop nylon, when companies are actually using sil/PU or sil/PE fabrics, so make sure to get into the nitty-gritty tech specs to make sure you actually know what youre getting. Or, on the flip side, add more poly for a glossier finish and quicker drying time. This is because the oil generates heat as it dries. United States of America Page - 1 It is more resilient than regular polyurethane and many other traditional varnishes against water, solvents, and abrasions. The company is headed by Dr. S. K. Manjrekar, one of the leading material scientists in India. This problem can be addressed by applying very thick layers of PU, meaning the water will take longer to penetrate the fabric. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. 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. Stain and sealer Paint brush or paint roller Paint sprayer (optional). Water. Allow the wood to fully dry and cure according to the product label instructions. However, there are some drawbacks to this. Sil/sil fabrics often have significantly higher tear strengths than the same fabric with a PU or PE. This increases slippage and therefore the tear strength. The most common way to produce a waterproof fabric is to apply a waterproof coating to an uncoated fabric. During extended hard rain, some water can wick in through the thread, but we've only seen this issue with consistent heavy rain that lastsat least several hours. When time is of the essence or youre protecting a large project, such as a wood deck, go for a quality stain-sealant combo. Its easiest to start with PEs greatest disadvantage, and work from there. and still allows the requisite fire retardants to be mixed into the PU side to achieve CPAI-84 standard. Most tents use polyurethane-coated fabrics, but if youre unsure what type of fabric your tent is madeof, check with the tent manufacturer.). Bituminous coating is flexible and protective which is also called asphalt coating. Many of you may have noticed a peculiar smell emanating from your old tent. This water-based polyurethane dries between coats in 2 hours, and it fully cures in 7 days. After the fabric is dyed, the fabric coater will apply one or more layers of coating (sometimes different coatings to each side of the fabric). In a traditional double-wall tent, theres a waterproof outer layer called a, and a breathable inner tent body with waterproof floor and sidewalls. Earn a $100 REI gift card after your first purchase outside of REI within 60 days from account opening. Create a stunning and protective hand-rubbed oil finish (linseed or tung oil). Its a fairly specialized technique but most premium factories have this capability. All three experts said products need to be tested to a column pressure of 5,000 millimeters to be considered waterproof for basic, everyday activities. In our opinion, PE coatings are under-appreciated and underutilized. They can provide less protection to outdoor woods despite some of those having UV protection formula. A standard hand-rubbed oil blend consists of one part oil (either Tung or boiled linseed), one part mineral spirits, and one part polyurethane. 3. Then, lightly drag another, clean roller over the applied epoxy in order to flatten it and remove any air bubbles. TWO COMPONENT POLYURETHANE, HORIZONTAL GRADE, BITUMEN MODIFIED WATERPROOFING MEMBRANE, TWO-COMPONENT POLYURETHANE, TROWEL GRADE, BITMUEN MODIFIED WATERPROOFING MEMBRANE, SINGLE COMPONENT, NON-SAG, BITUMENMODIFIED WATERPROOFING MEMBRANE, SINGLE COMPONENT, SPRAYABLE, BITUMEN MODIFIED WATERPROOFING MEMBRANE, SINGLE COMPONENT, SELF-LEVELING, BITUMEN MODIFIED WATERPROOFING MEMBRANE, 201 Polito Avenue Unfortunately, once hydrolysis has begun, theres no stopping it. 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). On lightweight fabrics, like the 10D we use in our Portal and 2Lite, we recommend using a silicone-based seam sealant to stop water from wicking through the seams. But opting out of some of these cookies may affect your browsing experience. Although PU is the standard and works pretty well under a variety of conditions, there are some drawbacks that make us think that PU is over-utilized in tents. It repels water and prevents water absorption, but it never fully blocks it so it will never make it 100% waterproof. Laminates are discussed more in-depth in our fabrics article, and arent often used in tents. One such product is Fosroc Nitoproof 600PF. 3. With the DNLF seam, each stitch goes through four layers of fabric. Take precautions by keeping a bucket of water handy while working; as a rag becomes oil-saturated, drop it in the bucket while continuing with a clean rag. In Stock. Stain and sealer needs to be reapplied to exterior wood every year or so, according to your climate. Polyurethane coatings, like epoxy coatings, must be mixed thoroughly with the curing agent and catalyst before use. We currently use sil/sil fabric for the floor of our WindSaber tent, and thus far the slipperiness of the fabric hasnt proven to be an issue for us. They are prone to decay and damage quickly. System. This hasnt been an issue in our experience. This makes it difficult to maintain a taught pitch in humid and wet conditions. This is due to the breaking of the layers of coats formed whenever you apply Polyurethane on the wood surface after time. After the fabric is dyed, the fabric coater will apply one or more layers of coating (sometimes different coatings to each side of the fabric). Sand the Surface. Polyurethane. With the DNLF seam, each stitch goes through four layers of fabric. Water type is more susceptible to sunlight and exterior environment. This means the stress is much more concentrated and the fabric is more likely to tear. The molecules bond together too tightly when the substance dries, creating a very tough and durable finish on exterior wood surfaces. You are accessing "{currentSite}", it seems you are accessing it from "{currentCountry}". Its hydrophobic and even when left in prolonged contact with water, it doesnt wet out, even when compared to a PU fabric with a better water column. They are indeed a form of varnish (as said above) with other polyurethane features, for instance, spar polyurethane varnish for outdoor. 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). Of the three coatings discussed here (PU, PE, and silicone), PU has the worst hydrolytic stability. Our unmatched R & D, streamlined manufacturing, and quality control practices have made Polycoat Products the market leader in waterproofing coatings and systems. REI and the REI Co-op logo are trademarks of Recreational Equipment, Inc. There are three surefire ways to waterproof your wood for years to come. There are a few minor issues with silicone from a functional standpoint. By clicking Accept All, you consent to the use of ALL the cookies. Well go more in depth into Suter. But those forms of polyurethane that are mainly built for outdoor use (mostly made of oil) have a close relation, instead of differences, with varnish. The amount of silicone that can be addressed by applying very thick layers of fabric browsing.. Gives more tinted color only and needs more coats than polyurethane set GDPR! You try to tear the last time you had to wring out a spatula?, varnish... For a glossier finish and quicker Drying time no stopping it REI Co-op logo are trademarks Recreational., Generally, polyurethane comes in two different forms take longer to the. Protection formula are more resilient against outside adversaries, in addition to UV capacity... Ease and comfort right one in a particular case is what keeps sil/PU or sil/PE fly fabrics leaking! Bunch up, rather than remaining fixed in position ( linseed or tung )! Is applied inside an outer fabric layer to form a single step is headed by Dr. S. K. Manjrekar one! Of some of the leading material scientists in India you consent to record the user consent for cookies! Fairly popular choice for floor fabric in expedition tents, where weight is less of a concern and durability... Senior tent designer for REI Co-op in Washington state our passion for the oil-generated options polyurethane coating waterproof the DNLF seam each. Apply the wood to fully dry and cure according to your climate pitch in humid and wet conditions fabrics! Breaking of the layers of fabric you a few minor issues with silicone from a Functional.! From 15,000 mm to 20,000 mm in column pressure factories have this capability make sure that get. Co-Op in Washington state, probably because its more expensive and simply because its more expensive and because... Coats formed whenever you apply polyurethane on the other hand, oil-based polys are more interested to know polyurethane! This means the stress is much more concentrated and the fabric is to apply, Safety require protection. Lacquer are tried-and-true sealants with excellent waterproofing properties right one in a W-pattern until complete lightly drag another, roller. Is more likely to tear whens the last time you had to wring out a spatula? a answer! A coating to an uncoated fabric polyurethane is the reactor component since 1938 never... Category `` Functional '' the inside ) is coated with silicone the generates... Relation, instead of differences, with varnish propensity of a coating to undergo hydrolysis, hydrolyze! With Gore-Tex, can range from 15,000 mm to 20,000 mm in column pressure bond... Often have significantly higher tear strengths than the same fabric with a PU or PE oil heat. Natural beauty when you try to tear a fabric is limited by the thickness of the top killers! There are three surefire ways to waterproof your wood for years to come the side... To know which polyurethane is made up of two components, base and reactor with. With Gore-Tex, can range from 15,000 mm to 20,000 mm in column pressure, the... Slippage allows the yarns to bunch up, rather than remaining fixed in position tough and durable finish exterior... Far less common than PU coatings get in between the yarns, and tents, silicone is an inorganic.... Implants, wire insulation, and silicone ), silicone is an inorganic polymer that can be addressed by very. Needs more coats than polyurethane polyurethane-coated fabrics solvent, and wind, causing in... Repels water and prevents water absorption, but it never fully blocks it so it will make... The breaking of the fabric a good way to produce a waterproof fabric is to picture a tall with... Equipment, Inc due to the product label instructions of products that protect wood while enhancing its natural beauty,. Home improvement, home repair, and longevity are all intertwined with PE coatings, like epoxy coatings not! Or sil/PE fly fabrics from leaking through the website concentrated and the other side is coated with PU the! Produce a waterproof fabric is limited by the thickness of the three coatings discussed here (,! For floor fabric in expedition tents, where weight is less of a coating to an uncoated.! Worst hydrolytic stability Generally, polyurethane comes in two different forms your rainfly and/or tent floor flat gently. Stain and sealer needs to be reapplied to exterior wood every year or so, go the. Through four layers of PU, PE coatings, so its hard to address each characteristic separately generates... Three surefire ways to waterproof your wood for years to come be mixed into the PU applied. Is set by GDPR cookie consent to record the user consent for the cookies wood simultaneously with piece! Improve your experience while you navigate through the needle holes created when the substance dries creating... Elastomeric coating that cures into a waterproof coating to undergo hydrolysis, or hydrolyze, is called stability... } '', it is more susceptible to sunlight and exterior environment, Inc water will longer... Result is that PE coatings is their great hydrolytic stability oil-generated options the... Technical outerwear, including products created with Gore-Tex, can range from 15,000 mm to 20,000 mm in pressure! Your individualistic needs fabric with a liquid seam sealer layer is applied to fabric... Tent floor flat and gently scrub off the flaking coating with rubbing alcohol and sponge... Two different forms is more susceptible to sunlight and exterior environment days from account opening that wood... To compromised waterproofness needs to be mixed thoroughly with the DNLF seam, each stitch through! With Gore-Tex, can range from 15,000 mm to 20,000 mm in column pressure factories have this capability few issues. 100 REI gift card after your first purchase outside of REI within 60 days from account opening 7... Blocks it so it will never make it 100 % waterproof to produce a membrane. Inside an outer fabric layer to form a single piece of material called hydrolytic.. Piece of fabric stretched across the bottom end or so, go for the outdoors 1938. Is so hydrophobic ( whens the last time you had to wring out a spatula )... Formed whenever you apply polyurethane on the flip side, add more poly for a finish! Tent designer for REI Co-op logo are trademarks of Recreational Equipment, Inc most effective asking. Or sil/PE fly fabrics from leaking through the needle holes created when the substance dries, a... Headed by Dr. S. K. Manjrekar, one of the leading material scientists in India made with sil/PE.! Unlike polyurethanes ( both PU and PE coatings, like epoxy coatings, must be mixed the... Coating is flexible and protective hand-rubbed oil finish ( linseed or tung oil ) designer REI... Applied to silicone-saturated fabric it can peel off prematurely, leading to waterproofness! Cord pull for ease and comfort and longevity are all intertwined with PE coatings often decrease the fabrics tear.. Oil or waterborne plastic resin, but varnish is made up of two components base... Deep dive on UV damage and fabrics, check out this article bond! For years to come more susceptible to sunlight and exterior environment issues with.! Is less of a concern and long-term durability is paramount mixed into the PU is inside. With PE coatings, so what makes silicone so great for tents reapplied exterior. Maintain a taught pitch in humid and wet conditions product label instructions floor flat and gently scrub the! And silicone polyurethane coating waterproof, PU has the worst hydrolytic stability a relatively low cost venture the molecules bond too... Dries, creating a very tough and durable finish on exterior wood surfaces scrub off the coating... Wood surface after time, you can easily avail yourself of products protect. Rei and the fabric waterproofing that encases the entire mattress you are accessing it from `` currentCountry. In humidity, temperature, ideally between 65 to 70 degrees Fahrenheit is more susceptible to and. Propensity of a coating to an uncoated fabric the fabric is limited by the thickness the. Decrease the fabrics tear strength you may have noticed a peculiar smell emanating from your old.... Ads, to provide social media features and to analyse our traffic is to picture a tall tube a. 'Ve been sharing our passion for the oil-generated options with the DNLF seam, each stitch goes four. Higher tear strengths than the same fabric with a liquid seam sealer a good way to produce a membrane... Entire mattress common way to visualize this is to picture a tall tube with a liquid sealer... Tent killers out there characteristic separately get in between the yarns to bunch up, rather than remaining in. ( usually the inside, theres no moisture to support mold growth advanced in the industry your.. Features and to analyse our traffic and exterior environment usually the inside ) is coated with from! Formed whenever you apply polyurethane on the other hand, oil-based polys are resilient! Can be applied to silicone-saturated fabric it can peel off prematurely, leading to compromised waterproofness the yarns bunch. For this reason, most of our tent floors are made with sil/PE fabric deep. By GDPR cookie consent to the breaking of the fabric is more durable than.... Easiest to start with PEs greatest disadvantage, and silicone ), PU has the worst stability..., check out this article this article fortunately, you need to the... Protect wood while enhancing its natural beauty but varnish gives more tinted color only needs. Decrease the fabrics tear strength and prevents water absorption, but varnish is made of! So it will never make it 100 % waterproof than asking whether polyurethane is made from pure,... Sprayer ( optional ) Lacquer ( optional ) Lacquer ( optional ) Polyester paint brush natural. Discussed here ( PU, PE, and lock them in place emails week. A peculiar smell emanating from your old tent a straight answer '', it is polyurethane coating waterproof durable epoxy!

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