poly over epoxy. Epoxies on the other hand are naturally more rigid and are able to move . Re: Gelcoat over epoxy? There are an infinite number of paints that can be applied to sanded smooth epoxy. In 10 - 15 minutes scrape the surface level with a putty knife. but polyurethane needs a lot of preparation if the paint coat is to resist a lot of handling and this is made difficult by such a patterned/textured surface. They definitely supplement an efficient, durable and long lasting floor coating system by providing build thickness. Yes a poly top coat will fill in the scratches from the sanding and make it look clear again. The next step is to scrape off any stray pebbles that aHre sticking up and sweep or blow off the floor to remove the extra pebbles. Hi-Solids Polyurethane is a two-component, aliphatic, acrylic polyurethane resin coating. CRAFTY offers an affordable solution for those new to using epoxy resins for countertops. So, you should thoroughly remove the polyester resin coat by sanding from the surface before applying epoxy coat over it. Polyurethane And Epoxy Flooring Differences. Polyurethane coating also offers better chemical and solvent resistance than epoxy ones. DIY Epoxy River Table: I made an inexpensive epoxy resin river table. In general, PU/PE boards are cheaper than EPS/Epoxy boards. When used as a topcoat over epoxy, they protect the underlying epoxy from yellowing over time. It is also scratch-resistant and non-slip, making it an excellent safety choice. Q2： Can you provide the samples? Yes, we . Joined Nov 5, 2002 Messages 6,847. (Among other possible problems because it’s not made for. After 7 days they recommend you use this new fangled gadget called a scuff pad to abrade the. Please be careful with oil-based paints since they are known to leave an amber hue on epoxy primer. In this article, we compare epoxy vs polyurethane, the different types, and uses. Since you ARE using epoxy to fill the voids, you are much better off using a normal stain, then following up with a top coat of your choosing. It is almost always advisable to use polyaspartic over epoxy when it comes to laying a protective surface. Just measure, mix and pour! One coat of "Glaze Coat" is equivalent to approximately 60 coats of varnish. If the tiles are glazed, the gloss will need to be removed by grinding to allow the epoxy to grab hold. The mixing step accounts for a large portion of failures in epoxy floors. Polyurethane is a plastic that we encounter everywhere in our daily lives. Epoxy and polyurethane coatings may have a surface tension in the range of 38 dynes/cm. Poly melting the EPS foam will not be a factor as the foam will be sealed by whichever filling agent is appropriate. To sum up, polyurethane can be a very easy DIY way of filling in cracks. I recommend using a barrier coat for a water based polyurethane over oil stains do to adhesion problems. This material is typically combined with a small . (2) After 24 hours, the polyurethane was tacky/gummy. Epoxy MUST be mixed and promptly dumped onto the floor. If you are applying a wall decal, only use a light coating of polyurethane. That said I normally just paint over the epoxy without special prep. Gluvit cures in 24-30 hours at 72°F. I've applied polyester based gel-coats over epoxy many times by allowing the epoxy to fully cure and achieve a secondary bond thru mechanical abrasion. Poly-Crete MDB is a seamless, ¼-inch, 100% solids, aromatic, cementitious urethane, self-priming, coating system. With its resistance to oil, gas, salt, and other harsh chemicals, Polycuramine provides the most durable floor coatings available to garage owners. Choosing the right concrete floor coating system is essential to meeting the performance requirements of commercial, industrial, or residential environments. These coatings are widely used on factory floors as well as for countertops. Polyester fillers, urethane or waterborne primer or sealer, urethane or waterborne basecoat, urethane single stage, lacquers, enamels. Many epoxy adhesives are clear, though epoxy putties for larger applications come in black, white or gray. About Polyurethane Floor Coatings. I would not go crazy with poly coating over epoxy until you have six months to a year of time on a handful of pieces. PUR is created by an exothermic, i. Polyurethane Sealers for Concrete. You can paint over and stick all sorts of other applications to polyurethane with the proper preparation. Finish coatings like paint or varnish are applied over an epoxy barrier coat to decorate the surface and protect the epoxy from sunlight. Perfect for bar tops, kitchen islands and more. You can drop items onto them without damaging the floor. Remember, you will be applying your epoxy resin in 2 stages. Polycrylic vs Polyurethane: When to Use Each Finisher. Steps to Consider When Applying Polyurethane Over Epoxy Resin. Best is the acrylic poly over the epoxy or epoxy and chips, then the Polyester Poly over that. These polyurethane casting resin products are two-part, 1-to-1 mix ratio formulas that set from 5 to 20-minutes. Have Better Hardness, Adhesion & Durability. Water based polyurethane over epoxy resin? Hi all, I'm using some reclaimed/re-milled messmate that has some "feature" gum lines and nail holes. on different types of boards because of body structure. As far as lasting longer depends on the use and abuse. In fact, some manufacturer’s claim that the wear resistance of polyurethane over epoxy is almost 3 to 1. Clear Gloss Oil-Based Interior Polyurethane Varathane 1 qt. Scuff Meister Every paint manufacturer has their own recommendations on what you can do and what you can't do. Any issue with the above mentioned polyester primer over the epoxy. Polyaspartic, Polyurea & Polyurethane coatings, especially polyaspartic, are much more abrasion resistant than epoxy. If the front edge isn't rounded over, use a 1/4-in. Firstly, the technology includes mechanically profiling the existing epoxy floor by sanding it. Just as you can over any Drying Oil. Thoroughly saturate the sand with the concrete floor crack repair resin and fill it to the surface. Can You Pour Epoxy Over Oil Based Poly?. Mar 14, 2018 #7 Make sure to tape off or avoid spraying areas that are difficult to sand and/or do not need poly! Reactions: Barry. Polyurethane over epoxy resin gives you protection against UV rays and scratches making your project look shiny and free from any external particles entering through it and decrease its lifetime. Trusted epoxy manufacturer since 2002. THIS PRODUCT IS CONSIDERED A WATERPROOFING SEALER. Asides from this, the Epoxy will certainly not stick very well to the polyurethane, and this repercussion is fisheyes. The two are mixed when you're ready to apply them and then rollered or brushed onto the wood. The first coat or two of the latex will show lots of paint brush marks on the slick and smooth epoxy. You should do this a couple of hours Step 2: Ensure You Have Sufficient Lighting (optional). Two to three coats of epoxy also provide a stable base for clear two-part polyurethane finishes. If an oil based stain has already been applied the official recommendation would be to strip and re-stain with a water based. I am outside the epoxy's re-coat window and was told by the Clausen tech that I should hit the epoxy with 180. Interlux Brightside Polyurethane Topside Paint is a unique resin that uses the latest ultraviolet technology which ensures longer color and gloss retention. It looks like you're bonding epoxy over wood. Surface preparation for Bonding using Epoxy and Urethane. You can paint over epoxy using both water and oil-based paints. If you've waxed your furniture and then decide you'd prefer a poly finish, remove the wax with mineral spirits (in a well ventilated area. This project does take a fair amount of time, but it has a fantastic end result. Polyurethane can be used in certain situations but is by no means a default product. As a result, our epoxy does not fade, yellow, or crack over time. An epoxy and polyurethane coating system is often used in the marine industry to protect against the weather. Epoxy paints are popular for floors because of their sharp look and incredible durability. From majestic jets to plain tugboats, enamel is commonly used on surfaces that require a durable coat of paint. It was fine, but I wasn't impressed enough with it to use it again. Robert Hanson is the President and founder of GarageFloorCoating. The resistance of the products to moisture. By utilizing epoxy and polyurethane together, you'll optimize your industrial and commercial floors to the maximum. Minwax 63010444 Fast Drying Polyurethane Clear Finish, quart, Satin. Inject the concrete crack repair resin into the crack to wet it, it will soon get tacky. Epoxy for Kitchen Countertops. You can mix epoxy resins with colorants and filling materials to get the desired results. It seems to be commonly accepted that you can't put Polyester Resin over epoxy. Monomers: The monomers for epoxy resins are phenols and epichlorohydrin, but the monomers may vary depending on the type of epoxy resin. Epoxy primer works best on bare metal and is recommended for newly-fabricated metal parts or those. Does Polyurethane Adhere To Epoxy Resin?. Applied over epoxy, they perform beautifully together and outlast either coating used by itself. We do not recommend putting the epoxy over water-based polyurethane. It will be a useless $500 doorstop. However, the epoxy coating will chip and crack over time. Epoxy needs a rounded edge in order to bond well to the corner and to flow over it. Varnish will work over epoxy, and will provide some UV protection. Difference Between Epoxy and Polyurethane. I've also sprayed high gloss clear coat - if you have a hvlp spray gun, I recommend that over a can for better results. Functionally, the two elements are very similar in quality and durability, with the heat handling capacity being the main difference between the two. Epoxy is extremely scratch resistant and liquid resistant making it one of the best options for bars and restaurant tables. Of Course polyurethane can be used over epoxy resin where polyurethane gives the sealant and shine look. It always has to go over-top of something else, like concrete. Countertop Epoxy offers custom refinishing kits for homeowners and do-it-yourselfers to transform existing surfaces in their homes. It gives a modern and aesthetic look, so it is mostly used in kitchens, living spaces and bathrooms. Step 3: Apply a Final Coat of Polyurethane. Robert's evolving knowledge and experience pertaining to concrete coatings and installation techniques culminated in GFC. Apply an oil based poly varnish over a section of each and a waterbourne poly varnish over another section of both. In short; you CAN apply a lacquer or a polyurethane over a Danish oil. That said another way, it is easier to catch waves on an epoxy board than on a poly board. The methods are brush-on, wipe, and spray-on to put polyurethane over epoxy resin. I'm not sure what you mean about the epoxy running down. Since that's no longer an option it would help a lot to provide some microtexture for the epoxy to grip. Never a problem and West System advises this as an acceptable method. Overall, the materials are cheap…. Applying polyurethane over epoxy is a perfect idea as it will protect your project from UV rays and scratches. Epoxy resin has been introduced in polyurethane systems to form epoxy/polyurethane interpenetrating polymer network structure. Allow it to dry for 3-5 minutes. The key differences between polyurea, epoxy, and polyurethane:. For more eco-friendly alternatives, see our Sustainability Page. Re: Polyurethane top coat directly over epoxy. Rewet the roller and go over the section in a perpendicular direction, again feathering out uneven lines. However, the exposure to water should be . Question about finishing over epoxy or CA glue I'm planning on filling some cracks in a project with some crushed stone and using either expody or CA glue to set the inlay into place. If the existing epoxy paint is a two-part epoxy, polyurea, polyaspartic or polyurethane, an additional layer of compatible paint should adhere to the floor. With a hybrid polyurethane coating, you only need to prep the harmed area and then place another coat. However, most of the bio-based epoxy. Sulfuric acid, for example, has a better reaction with polyethylene than epoxy. Pros - Very thick and can fill over 60 grit sand scratches, even up to 40-grit although I would sand until at least 80-grit if possible. Make sure you know what your fuse is made of. Since epoxy is stronger it takes less resin in the laminate to do the same job as polyester. If the epoxy does get damaged, it can be tricky to fix without being noticeable. While it reminds me of that age-old question about the chicken and the egg, there is an actual answer and a few rules to the questions of wax over poly or poly over wax. Like epoxy, polyurethane is a thermosetting polymer and high-performance coating. Polyurethanefloors are usually softer and elastic. I would advise against using wood products over an epoxy, you could run into surface tension issues when trying to apply it over a smooth surface. Sand existing finish with 180 - 440 Grit and shoot 2-3 coats of epoxy to seal away the old finish. Use a clean cotton cloth or brush to apply wax in a thin layer, working into recesses of carved details or surface imperfections. Then, clean off any dust from the area and use an adhesive to tape down plastic sheeting along the edges in case there’s any spillage. Our customers’ fiberglass repairs range from filling a minor screw. Poly over lacquer is not a good choice, as the polyurethane will not bond properly with the lacquer. After filling with the epoxy I covered with Minwax spar varnish and after 2 days the Spar is still tacky only over the epoxy. Outdoor coating requires two coats over primer. Fisheyes means that the Epoxy is trying to push itself away from the surface. Something to do with the epoxy's "amine blush" which can cause adhesion problems. Epoxy is known for its higher bonding capabilities overall. If you want to use polyurethane as a sealer, then you need to ensure that the grade of poly that you use is compatible with the stain. Epoxy primer is used on bare metal (it is like an etching primer). Oil-based polyurethane: It is not wise to put epoxies over polyurethane. Polyurethane Coatings Though they exhibit much thinner cured-film thickness, polyurethanes offer a number of unique advantages over epoxies. That soaking is what deepens the color. The vendor says this is probably . They offer chemical resistance and waterproofing. Epoxy, polyurethane, and urethane are all great options for durable and long-lasting floors. Epoxy floors are resilient, impact resistant, somewhat flexible and hard. Polyurea has a higher resistance to chemicals than epoxy and is U. Can Polyurethane be Applied over Resin? Yes, but you need to first apply 2 or 3 coats of Epoxy Resin and then you can apply one clear coat of 2-Part Polyurethane finish. How To Apply Polyurethane Over Epoxy Resin?. Our versatile Epoxy Flakes are easy to install and work in combination with our poly epoxy coatings to create stunning residential and commercial concrete floors. The cons I've read are that poly doesnt stick to Epoxy and will chip off over time. Although they both create a glossy look, they are not the same. other types of wood finishes such as shellac, lacquer, varnish, etc. Once the floor is fully covered the epoxy is left to set. Just like any industry that uses technology, over time the technology gets better. This type of sealer is highly water repellent and adds a glossy finish, and it. Advanced Beam Repair with the EndRot System Rotten window sills, deck footings, and beam ends are no match for the EndRot System! Choose the cost effective solution to wood rot:. Apply our proprietary bonding primer and allow to dry 24 hrs. First, apply a thin coat, this is referred to as a flood or seal coat. What are the advantages and disadvantages of Epoxy, Polyurethane, and Silicone Adhesives? by Alisha Adams on November 27, 2019. Eco-Poly Polyurethane Sealer, Floor Finish, Wood Floor Sealer and Concrete Sealer, Non Toxic Water Based, No to Low Odor, 1 Gallon, Gloss. All three options have different levels of flexibility, chemical resistance, water protection, longevity, and other benefits to fit your company's unique needs. This is the best clear topcoat you can apply to a newly applied epoxy floor (but it lacks the UV blockers). Watco Tung Oil Finish is a ready-to-use, fast-drying product that won't darken over time and may be used to restore the luster and character of interior wood furniture, trim, and molding. Unfortunately, it is this same impressive durability that makes it difficult to paint over epoxy surfaces during remodeling projects. Now, it’s time to learn more about each epoxy wood finish in greater detail. The problem is the protective coating over the paint. Polyurethane is often applied over epoxy coating, as an anti-corrosion . Some floor tiles have a glossy finish from the glazing process, which can make them tricky to bond to. However, in most cases, the best results come from an epoxy floor with a thin-film polyurethane (often referred to as a "urethane") topcoat. The flooring where these are used is mostly concrete, but we do find the occasional . Also for maintenance of existing epoxy systems. round-over bit with the router positioned horizontally so the bit can follow the shape of the front edge. Use a green kitchen scrubby or 220 grit sandpaper on the poly then pour the epoxy. Polyurethane is a clear finish, so you’ll need to set up Step 3:. The garage was built in 1922 slab on grade, and no underslab vapor barrier is assumed. Depending on the product, polyurethanes can have better chemical resistance and provide better abrasion and impact resistance than the epoxies. 2021 Raw Material Shortage Updates: Update: 02/25/2022 Shortages persist of the raw materials used to make many epoxy, polyester and polyurethane resins which are causing longer than normal lead times for us to obtain certain products. Glaze Coat Epoxy Sealer is a clear, easy-to-use finish that can be poured onto almost any clean, dry material to create a gorgeous high-gloss surface. A casual debate often will arise over the use of either epoxy or polyurethane foam for concrete crack and joint repair. It is safe to put polyurethane over epoxy because the poly coat on epoxy coating prevents oxidation of the vanish if exposed to UV rays, thus extending the life of the epoxy underneath. Epoxy also provides a better moisture barrier than polyester resin. This alternative to epoxy is also known as an aliphatic polyurea sealer, which is a mix of ester and other materials. It will add an amber color, the tint will depend on the varnish. In that case, you would be better served laying up a 100% epoxy schedule. So, my 4 best finishes for epoxy table tops as well as any wood surface are as follows: Rubio Monocoat Oil Plus 2c. Epoxy primer seals out the oxygen from the metal along with moisture, chemicals and UV rays. Some epoxy coatings contain UV inhibitors, but they can still develop a slight yellow tint over time if they're exposed to the sun. Can you put clear poly over epoxy? no. Ideal as a one coat system over marginal or poorly prepared surfaces where blasting is impractical or prohibited. Polyaspartic is a hybrid material that resembles polyurethane. Same with a 2k filler/sealer primer. Epoxy primer is actually able to absorb into the concrete and creates a great grip on the surface of the concrete for painting. What is an Epoxy Floor Coating? An epoxy floor coating consists of an epoxy resin and a polyamine-hardener. A two part epoxy coating and laminating resin for use in marine and woodworking applications. yes, I use a 2pak polyurethane by U-pol (S2086EV) with great success. Poly boards tend to be heavier, which means they sit lower in the water, making them the ideal design for riding barrels. Then there are the more modern synthetic lacquers, which . That means you can make as many parts as you want over poly if you have mold. It is also possible to use 2 part epoxy over the polyurethane layer. Move to the corner farthest from the exit. Tip: The best polyurethane to use over epoxy is oil-based polyurethane. Poly 90 is the easiest coating you will ever use!. Epoxy polymers tend to have lower cross-link density compared to polyurethanes. So polyurethane often looks nicer than epoxy. The Right Topcoat Makes All the Difference. If you don't, sticky varnish or oil based paint is the result. Poly Epoxy is a true high-performance epoxy resin with unmatched tensile, compressive, and flex strengths. As mentioned, phenolic resin countertops handle continuous heat exposure up to 350°F (176°C) exceptionally well while epoxy resin performs even better under higher heat loads, including open flame. Epoxy is one of, if not the most durable finishes that you can use Repairability varies greatly with poly depending on the severity of . Once you spread it, it dries quickly. When going over the top of a tiled floor, the main concern is adhesion - with epoxy onto the tile and tile onto concrete. Use Countertop Epoxy to coat directly over existing countertops, walls, or floors to give them an entirely new look while avoiding a costly replacement. For that reason, after a few months, the surface of epoxy resin will peel off. Its coefficient of thermal expansion is similar to concrete, making it very resistant to thermal shock. That means it is sprayed over the top of epoxy primer and can be sanded down. If not, you don't have a huge refinishing problem. Performance Poly 200 is a UV stable, abrasion resistant single component top coat that outperforms polyurethane. This is a light sanding and doesn't need to be too abrasive, it simply provides an added assurance that the epoxy will coat properly. Give it a minimum of 48 hours before applying the poly primer over the epoxy. The scratch-resistance of the end product and more. However, Polycuramine is more potent than epoxy. The price to coat an existing concrete floor is ranges from $3 to $7 per square foot including labor and materials. Candida antarctica Lipase B (CALB) was covalently immobilized onto epoxy-activated macroporous poly(methyl methacrylate) Amberzyme beads (235 microm . Polyester is more fragile and useful for temporary. Epoxy primer can also be applied over black iron, phosphate coating, fiberglass, and plastic. Epoxy for filling holes, poly as the overall finish. UVPoxy can be used for a glossy finish on your epoxy table. It's a resin that cures as a liquid. If the linseed oil is allowed to dry completely there isn't a need for a barrier coat. How to Choose the Best Wood Finish for Your Project. The newer technology brings more benefits than conventional polyurethane coatings, especially since epoxy floors do not typically “self-level” and may have higher VOC counts. Clean surface well, roughen up with sand paper as much as possible. Working with regular epoxy resins can be a pain at times, as they tend to self level at 1/16. To be used as a satin finish over intact existing (Epifanes) poly-urethane varnish systems on dimensionally stable wood (e. This is because they have more flexibility than epoxy and are able to absorb impacts better. Should I Add Poly Over Epoxy for My Turnings?. However, we are committed to providing the best for our customers, so let’s get involved and our family and yours together will achieve it right now. Polyurethane resins are synthetic resins that have two-component systems using a combination of resins and hardeners. I once tried poly over a previously waxed hardwood floor. But without epoxy's lengthy application and cure times and installation stipulations. Non-Expanding Epoxy Resin is the best product to use for your Concrete Crack Repairs. Yes, Aliphatic Polyurea shows superior inter-coat adhesion with epoxy floor coatings. SB112 doesn't blush and I have gelcoated over that. Implicit of its name, polyurethane is plastic and can be solvent (oil) or water (acrylic) based. When polyurethane finish combined with an epoxy primer, it can be applied on almost every type of . Dolphin glaze is another brand that I use for scratches, nicks and chips in body. Fast curing – five times faster than epoxy. Crystalac Brite Tone Instrument Finish High Solids Polyurethane is a high solids, super hard, scratch resistant, with exceptional clarity. Concrete Floor Supply offers these flakes as single products or as part of a kit containing all of the products you will need to complete a project from start to finish - ideal for. Joined Jan 5, 2007 · 23 Posts. This makes it an affordable option for both small and large projects. Use floor buffer with black pad on floor tiles for best results. They call it flow coat and add styrene to slow the cure rate. Typically, Epoxy primers for attaching the framework to concrete, epoxy build coats for all-out system build/thickness, and polyurethane topcoats for upgraded physical execution, impervious to chemicals, safety, and style. Clear Coat contains no volatile solvents. I am currently constructing poker tables with cards inlayed as shown in the photo below. As the surface area of your space increases, the design becomes more intricate, and multiple colors are added, the cost of your flooring may increase. This project uses skills you may already have, but I'm sure you can learn some new ones. Polyester resin is most commonly used in the construction of molded reinforced fiber and composite products, so its mechanical properties are reinforced with the fiberglass itself. Epoxy is more resistant to wearing, cracking and peeling, and corrosion or damage from chemical or environmental. A two component, high solids, chemical resistant polyamide epoxy mastic. Use a clean, smooth cloth about the size of your hand. Smith's Poly JF is a pourable grade 2-component Polyurethane that yields tenacious adhesion to clean, sound and solid substrates such as Concrete, Epoxy Mortars, Cementitious Urethane Mortars, Polymer Modified Concrete Overlays, and a variety of industrial coating systems. If you don't over-apply it, it should take 1 hour before sanding or screening. The good thing is even if you have a previous polyurethane coating on a tabletop, putting up epoxy over it is possible as long as you prepare the top well. I would consider that almost mandatory especially if I was applying poly primer over the epoxy. One possible solution is to use my own version of cold powder coating. Epoxy is more resistant to wearing, cracking and peeling, and corrosion or damage from chemical or environmental degradation. This is common on wood kayaks and surfboards. Excellent for use on cabin soles or salon tables. Gluvit Epoxy Waterproof Sealer. Applying epoxy over stained surfaces. Disclaimer: Never made an epoxy table My experience is in epoxy flooring. You get the benefits of a true 2-part epoxy without the mess. Many sales reps will argue that Polyurethane is better for Foundation Cracks, as it allows for small movement in your wall. Obviously painting over with another matte paint, such as a good acrylic, is an option. , heat-releasing polyaddition reaction. However, can you put polyurethane over old polyurethane? Yes, you can apply polyurethane to your old polyurethane finished hardwood if you use the proper steps to prepare the finish. High clarity protective finish for indoor wood projects provides a rich, golden glow. There are two types of adhesives. Gluvit may be applied over mildly damp (not wet) surfaces. Epoxy coatings can be done for $3 - $7 per square foot. I have used spar varnish on top of epoxy for a boat before. What are the main differences between a polyester and an epoxy surfboard? Which board will last you the longest? Let's go through the pros and . It is considered the most advanced coating technique. Unlike polyurethane which can take up to 24hours to dry well, shellac doesn't take long. If they hold up, you are good to go. Regardless, I would use a urethane made for resinous flooring. Both polyurethane and epoxy coatings are recommended by contractors for . Epoxy and Polyurethane compounds are thermoset plastics. , Pol-Ease® 2300 Release Agent) is often. I'm using polyurethane as a final topcoat over clear coat epoxy. Polyurethane coatings are mostly used as top coats over Epoxy coatings. So, applying this coating to a substrate that has a surface energy equal to or greater than 46 dynes/cm should wet out and provide a satisfactory bond. It doesn't have the UV blockers that the Acrylic Poly UV Plus contains. If you put this coating over worn-out concrete, the floor will still look worn out when you're done. Fiberglass - steel - wood - aluminum: Bonding and filling primer for interior and exterior use above and below the waterline. Temperature resistant – performs at -30° Fahrenheit to +140° Fahrenheit. In just a few simple steps, you. I wanted to do a polyurethane layer as the final coat (or coats if i need to apply a few). The epoxy/cloth laminate is comparable to using polyester resin with 3/4 oz. Epoxy is a resin that is commonly used for woodworking projects. Epoxy paint on wood takes forever to dry. DIY Epoxy River Table : 9 Steps (with Pictures. UV Stability: Polyurethanes exhibit excellent UV-resistance. You should prep poly by sanding it - very, very lightly - first: 1). What matters most is that you stick to the same brand. PC-275 provides excellent adhesion and protection to tight, sound, rusty steel surfaces and to upgrade old, deteriorated coatings. It must be applied when temperature and humidity conditions are exactly as specified by the manufacturer or cure times and finish quality are affected drastically. Apply Paint Over Polyethylene, Polypropylene, ABS, and PET/PBT Blends. Will epoxy bring out wood grain? WEST SYSTEM® epoxy is an invaluable resource for creating a clear coating that showcases both the beauty of the wood grain and gives you four times the thickness of a single coat of polyurethane. No mixing necessary and it can be applied over epoxy or bare concrete. A two-component aliphatic, acrylic polyurethane finish. Hybrid polyurethane is also easier to repair than epoxy. One reason for this is the ability of epoxy to form a stronger mechanical bond to a damaged laminate than polyester resin. We can even apply poly primer over 1 coat of epoxy in the same day, if surface temps have been held at 80°+ for a few hours. When applying please make sure you are able to air out the room and wear a mask at all times! This item is considered "dangerous goods" and a dangerous goods. wait for the primer to dry again. DON'T, you'll just end up with an oily neck. And epoxy has a slightly light specific weight. With a modulus of elasticity of 150,000 PSI, it is a bit more flexible than standard epoxies and polyester, but much stiffer than adhesive sealants. Poly 200 is a UV stable abrasion resistant single component top coat that outperforms polyurethane No mixing necessary and it can be applied over epoxy . The epoxy will stabilize wood from changes with humidity changes (the usual destroyer of varnish and polyurethane coatings), while the polyurethane with added ultraviolet light blockers can protect the epoxy resin which is rather vulnerable to UV over time. A polyurethane (PU) product is a coating system which results from the chemical reaction between a polyol resin (also known as the base, or the "Part A") and a poly-isocyanate curing agent (also known as the hardener, or the "Part B"). In fact, some manufacturer's claim that the wear resistance of polyurethane over epoxy is almost 3 to 1. The epoxy could cause the water-based polyurethane to wrinkle or soften. The article I read recommends sanding the poly first. This chemical protects against damage, UV rays, and water. Subsequently, question is, can you put epoxy over varnish? As a general rule, epoxy should not be applied over. Therefore, the conclusion is that you cannot put Epoxy on polyurethane. Construction adhesive and contact cement, on the other hand, are "non-reactive. Epoxy will overheat and become ROCK SOLID in the can. Linear polyurethane (LP) systems can usually be applied directly over epoxy coated surfaces without primers, but they are costly and frequently have much more critical application parameters. Epoxy is best used as a repair, .