Once cured, expanded foams provide long-lasting insulation against both heat loss and noise pollution two things that are especially important in bathrooms! Do you have a dry well? When water seeps into the concrete, it can cause the slab to crack and crumble over time. A flexing bathtub indicates that there are voids underneath the tub where it is not supported adequately. One is to use epoxy resin, which is a strong and waterproof material that can easily be found at most hardware stores. This is where the expanding foam is going to do its job. Be sure to wear gloves and protective clothing when working with this product as it can be messy! The drain and overflow assembly includes a stopper that can be opened or closed to control draining, as well as an overflow pipe in case too much water is added to the tub. This kind of bathtub stands on its own. We are planning to install a vanity with legs, not tight to the floor (one we can clean under). However, too much flex and you risk damage to the bathtub. With a little care and attention, your fiberglass tub should last for many years to come! Once that thin-set mortar hardens though, it is very hard and inflexible. And no matter how well you fill the voids under the bathtub, it wont stay without removing the caulking joints and redoing it. To be honest, Im a professional plumber. How To Tell If A Chimney Is Structural: Find Out! Heres why: Concrete is a porous material, which means it can absorb water. Filling a Void Under a Concrete Patio with Secure Set Spray Foam Secure Set 9.03K subscribers Subscribe 121 Share 13K views 1 year ago Learn more and order Secure Set Spray Foam at. Its very easy to use because it also comes with spray bottles. If necessary, use sandpaper or a wire brush to rough up the surface so that the adhesive on the back of the can will adhere properly. Not totally uncommon, but forms are usually removed prior to tub being set. Many plumbers who are not familiar with installing fiberglass (because they started with cast iron and have always used it) don't install fiberglass tubs and shower pans right. To use it, mix the cement according to the package directions and then apply it to the void with a trowel. That creates a smooth transition from the surface of the deck right into the tub. Open-cell foam is less dense and more porous than closed-cell foam. Fill of the tub with water to exert pressure afterward. The shut-off valves are usually in that area as well. You just have to spray in stages. That hole the concrete is pretty standard, it allows room for the trap under the tub. As a result, youll have to be careful with the next step. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. This was the whole procedure. To recreate the look of a spa, theres nothing more elegant than an undermount tub. Third, foam board can be cut to fit any size tub, so youll need to measure your tub before purchasing the material. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. It's a fiberglass tub and there is not a big gap between the bottom of the tub and the floor, so I don't really know if much cement will flow underneath the way I want. This went sort of in front of the other foam under the tub up to the inside of the wall. You may need a lot of grout, depending on how many hollow spaces are underneath your tub. I run a hardware store nearby Court Anaheim, CA. The tub wont move now because of that extra weight and the foam will be set without any disturbance. Two popular choices for under the bathtub are spray foam and mortar. password. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Not just a wide range of sizes but, Read More The American Standard Whirlpool Tub Parts Diagram Youll Need for Assembly!Continue, How frustrating is it when you want to shower with cold water, but hot water comes out?, Read More American Standard Shower Valve Hot And Cold Reversed: Possible Reasons And SolutionsContinue, Does your toilet start to leak water around the tile on the floor? Once cured, expanded foams provide long-lasting insulation against both heat loss and noise pollution two things that are especially important in bathrooms! To fix these areas, you need to either reinstall the bathtub or use a material to fill the gaps and support the weight of the tub. Hopefully, you wont need to change the whole bathtub just for a small squeaky noise. Most of these everyday items can be easily found in our house. In this step, we start recaulking the bathtub. Thick suds and bubbles on the surface of the bathwater prevent the diffusion of heat into the air. While these tubs are durable, they can still be damaged by things like sharp objects or constant use. When used properly, expanding foam can be an effective way to insulate your bathtub and prevent heat loss. Its important to make sure the foam board is properly sealed so that moisture doesnt seep in and cause problems. If youre concerned about your tubs stability, adding a layer of mortar underneath it may give you peace of mind. Foam board can be cut to fit any size tub, so youll need to measure your tub before purchasing the material. You suggestions and opinions are always wecome. We are sure you wont need help from any professional plumber again regarding this problem. I think the floor was not prepped correctly. Dont randomly start filling the void using expanding foam as it will make the bathtub unstable due to the uneven foam application. It performs best. That might include natural stones or a manufactured product. Two popular choices for under the bathtub are spray foam and mortar. Is variance swap long volatility of volatility? Our editors and experts handpick every product we feature. We have a remedy for that. Step-by-Step Process of Using Expanding Foam, Easy DIY Media Cabinet Build with Basic Tools, From Cast-Iron to Stainless-Steel: How to Replace Your Kitchen Sink. Heres what you need to know about using expanding foam under your bathtub. Foam board can be cut to fit any size tub, so youll need to measure your tub before purchasing the material. It indicates that your tub was not positioned properly. Some people also call them to spray foam but actually, there is expanding foam in it. Position the gasket for the overflow tube on the backside of the tub, between the wall of the bathtub and the mouth on the overflow tube. But like any ambitious DIYer, you can fix this yourself by using expanding foam. If you follow the steps cited here, the expanding foam under the tub will work like a charm and create a strong base. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Expanding foam or spray foam is the easiest solution for this, and it can be used in any kind of bathtub. Quick Guide- Where Is The Furnace Fuse Located? First of all, you need to select a perfect stabilizer to create strong and perfect tub support. It can sell for as much as $10,000, he says. We had a radon mitigation system put in a few years ago to deal with elevated levels, but our monitors show that it still gets up to around 3-4 pCi/L in the winter. Plaster of Paris is very easy to find, and inexpensive to purchase. Should I remove and reinstall a Jacuzzi / whirlpool tub when replacing the paneling around it with tile? The tub is typically made of enameled cast iron or steel. Additionally, you can choose large tiles for the floor, as smaller tiles can make the bathroom appear more cramped. Fill the rest in such a way that it would travel horizontally while it expands. The deck surface hides the rim and hangs over the edge of the tub into the basin, says Chuck Khiel, vice president of Fred Home Improvement in Bethesda, Maryland. The foam will expand as it dries and will fill the entire space. Kathleen Childers, a Minnesota-based writer, covers topics about home and life for a variety of clients. Not totally uncommon, but forms are usually removed prior to tub being set. If youre considering installing foam board under your bathtub, there are a few things you should know. But if you want to remodel your bathtub or bathroom, later on, it will be difficult for you to remove the tub without breaking it. Heres the Solution. But the downside is they wear over time and cause a variety of issues. One way is to use hydraulic cement. Pull out the caulk carefully without any scratch. Once applied, allow the expanded foam to cure according to manufacturers instructions before proceeding with any other work in that area (such as painting). Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? But its best to use Styrofoam or rigid foam as the base because expanding foam works better on these kinds of foam. Just take 2-3 buckets of water and put them in the tub while applying the foam. When you finish the project and drain the water, the bathtub gap will . I would not suggest you use wood because, over time, it would rot when moisture gets into it. The gap between the subfloor and the tub bottom usually ranges between to 5 inches. Simply just fill up the whole bathtub with water to expand. Suppose you have gotten ready to take shower in your relatives house but it has a shower, Read More How To Turn on Different Types of Showers Right Way!Continue, What are the TOTO Unifit toilet adapter problems users most complain about? Thanks - yes, no mortar was put down, much to my chagrin. Read more about us and our team. Any idea why there's a void (visible through the tub access panel down to the dirt) under the bathtub while the rest of the house is concrete slab? Unfortunately, Plaster of Paris is also very messy! In fact, the "void" fills with water in heavy rain which is a whole other drainage issue I have to address in the spring. It can be applied with a nozzle or a dispensing gun. Remember, you need to use a good amount of glue on the pieces; otherwise, theres a chance that the base will not stay in place. It eventually cracked and leaked on the ceiling below. Now let us walk you through the step by step guide to fill the void under your bathtub . Vacuum out any loose dirt or debris in the expansion joint. Such as: Filling up the bathtub with water before redoing caulk is definitely compulsory. The space you have for an undermount will dictate its size and shape. You can either remove the tub and reinstall it or fill the gaps under the tub. you will need to get access to under the tub and squirt some expanding foam, trowel in some mortar or structolite or at very least push in some shim shingles to remedy this improper Mortar is a traditional choice for under the bathtub. Accept Any area that gives under pressure or feels squishy is a flex. Save my name and email in this browser for the next time I comment. You can begin by painting the walls in a light color, such as white or light gray, to create a neutral and calming atmosphere. Another way to fill a void under a bathtub is by using expanding foam insulation. You will want to hook up a spray gun or a plastic tub to make the application process ten times easier. The foam will expand as it dries and will fill the entire space. Specific instructions vary. She's also an avid runner and recently ran her first ultramarathon. Scrub the bathtub and rinse thoroughly. Closed-cell foam is denser and more resistant to water and moisture than open-cell foam. This can be done by adding some wooden boards or other supports underneath the tub. Duress at instant speed in response to Counterspell. Learn more about Stack Overflow the company, and our products. The tub has a honeycomb structure underneath that is supposed to be supported by quickset. How big is the void? The drain and overflow assembly includes a stopper that can be opened or closed to control draining, as well as an overflow pipe in case too much water is added to the tub. Steps To Follow On How To Fill Void Under Bathtub, 4. They have a clean look that's really popular, but no options for customization.". The tub does appear to be level, so I don't think that's the problem. Finally, installation is relatively easy and only requires a few tools. I assume it's possible that one of the corners of the tub are not touching the floor. Using these will make it easier for you to remodel in the future. The most common material used for this is wood. Youll have to wait for at least 4 to 5 hours before you can use the tub. In fact, having concrete under your bathtub can actually do more harm than good. How Do You Fill a Void under a Fiberglass Tub? Now cut foam insulation pieces to fill at least half of the void. At first, clean the expansion joint, then remove the caulking. is there a chinese version of ex. Continue with Recommended Cookies. Check to see if your rough-in space has gaps or not. Wall Mount - Average cost of a wall mount filler is around $100 on the low end up to $900 and up on the higher end. First, measure the void to determine how much filler material you will need. You're right that it needs to be supported somehow, though. You can use either plywood or 2x4s. Table of Contents [ hide] For filling the gaps around a bathtub, Great Stuff Foam with an extended spray nozzle (link to Amazon) is probably the most convenient and useful option. Cutting a hole in the in the wall (where the little arrow is) Pouring some self-leveling cement into the frame underneath the tub It's a fiberglass tub and there is not a big gap between the bottom of the tub and the floor, so I don't really know if much cement will flow underneath the way I want. You want to map the dist. You can stack them on top of each other to get the desired result. These questions are important when you are planning the project. Allow the foam to dry - The foam should be dry in 8-24 hours. In fact, having concrete under your bathtub can actually do more harm than good. However, I can't just have the plumber come back and re-do the work, since the tile is already installed over the top of the tub and this tile cannot be easily replaced (the dye lots are inconsistent and new tile won't match). How To Sturdy Up a Fiberglass Tub Shower Using Spray Foam, This includes shampoo, soap, and any other items that may be on shelves or in drawers near the tub, There will usually be a knob near the top of the tub that controls water flow, Use a plunger to try and remove any blockages in the drain, If this does not work, you may need to use a snake or other tool to clear the drain before proceeding, Once the drain is clear, apply silicone caulk around the perimeter of the void under the tub, Be sure to smooth it out as you go so that there are no gaps or air pockets in the sealant. Some varieties are also water-resistant. If your gap is smaller than. If you are using 2x4s, you will need to nail them together and then screw them into the studs in your wall. The foam will expand as it dries and will fill the entire space. Oops somebody "helpfully" changed my title. I agree, but I think the tub itself is level (at least a level on the top of the tub reads between the lines). The second and most important step is to measure the void accurately. Hi, Im Brad! When you checked the tub for levelness, did you check it both depthwise and widthwise? So, which is the better option? Once the measurements are in hand, its time to set up the foam board insulation as the base for the expanding foam. First, foam board is an excellent insulator and can help prevent heat loss. Did you probe the soil to feel concrete? interesting thanks for the info. Don't most expanding foams degrade from repeated compression cycles? Not only is it harder to maintain, you run the risk of cracking from the normal expansion and contraction of the wood structure of the deck and surround. We may earn a commission from your purchases. Once that's done, apply some sealant around all edges for extra protection. First of all, thanks for your time trying to think this through with me. A little bit of flex is acceptable. Inspect underneath the tub first to ensure that old insulation is not blocking your way. Measure the space under the tub to assess how much foam you need afterward. But because of moisture retention, roofing application only lasts over 50 years. This process does not take a long time but its important to measure everything. Its like a drop-in tub except with a flat rim. Answer: Youll have to apply silicone sealant at the bottom of the tub to avoid creaking. You will want to make sure that the supports are evenly distributed and that they are securely fastened so that your tub does not continue to sag. How can I fix a bathtub that was not set properly? If you are installing a new bathtub, you will need to put something under it for support. Steel bathtub making weird noises when pushing on it or standing on it? Mortar is also a very durable material, so it can withstand a lot of wear and tear. You can also apply thin-set mortar to the pieces instead of glue. From the joint of the bathtub and floor, pull out the old caulk. Here are the costs associated with the most popular bathtub fillers. If you hired someone to install it, looks like they need to come back out. Its also very versatile- you can use it on virtually any surface. So if youre looking to protect your investment (and your health), ditching the concrete is definitely the way to go. As for the tub: The squeak is totally gone. Open-cell foam is less dense and more porous than closed-cell foam. void beneath a bathtub is both unsightly and dangerous, as it can be a tripping hazard. However, doing so can provide extra support for the tub and help prevent it from shifting or moving over time. Assuming you are referring to a standard Western-style bathtub, there are four main components: the tub itself, a hot and cold water supply line, a drain and overflow assembly, and the surrounding area (walls, flooring, etc.). Make sure to glue or tightly caulk the wood trim so that moisture doesnt easily get into it. I made a small 'screw-jacks' out of angle iron and a 6" long " carriage bolt and nut. Wipe away any foam around the opening. Filling the void under the bathtub is a bit complicated once the bathtub is installed. All Rights Reserved. Read More. Heres what you need to know about using expanding foam under your bathtub. Subscribe our newsletter to stay updated. So, to me, this looks like an installation problem. These spray foams are extremely easy to use. A leaky bathtub can become a big problem real fast! Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. You should start by inspecting the area underneath the tub. The bathroom is full tiling.. floor and walls with jacuzzi tub, very nice. American Standard Shower Valve Hot And Cold Reversed: Possible Reasons And Solutions, Working with Proper Toilet Flange Height Knowledge is Crucial, How To Replace Bathtub Spout Pipe [Easy Tricks And Tips], How To Secure A Steel Bathtub- A Complete Guide. This puts the bathtub walls at their widest point and provides the narrowest expansion joint. To fill the gap between tub and floor, its best to put your tub against the floor as much as possible and then use drywall to cover the little gap. I'd hate to rip it up just wondering what your thoughts are. Step 1: To begin, look for the two shut-off valves beneath the sink. That fixed the squeaks for me. Alongside the expansion joint and under the bathtub run a bead of caulking. But if you want to use wood then its best to use Styrofoam wood trim. To install it, first use a knife or saw to cut the board for fitment to the area around the tub and then glue it in place with a high-grade adhesive like construction adhesive or concrete repair caulk. It is normally used to seal and insulate. Expansion joints need proper cleaning too. So whats the best solution? That sleek look makes undermount tubs so appealing. However, doing so can provide extra support for the tub and help prevent it from shifting or moving over time. Once it sets, it will harden and support the weight of the bathtub. Acceleration without force in rotational motion? In that case, you will need to cut Styrofoam or rigid foam for making a base for the void according to the measurement. This guide will explain how to fill a void under the bathtub and what mistakes to avoid during the process. If your home has a fiberglass tub, you may eventually need to patch or repair it. 1. If that hadn't worked, I probably would have drilled several " holes in the subfloor under the tub and squirted expanding foam up under the tub. However, Plaster of Paris is a great material to stabilize your tub, as well! i was thinking about auguring a dry well for this process. If you are using 2x4s, you will need to nail them together and then screw them into the studs in your wall. 10 / 16 You can use either plywood or 2x4s. Be sure to wear gloves and protective clothing when working with this product as it can be messy! Dont use the bathtub until it completely dries off. You will want to go out and buy quality foam board insulation. Oct 25, 2011. How can I repair a bathtub that is peeling? So make sure youve read this article at least once properly. If the gap is closer to 5 inches, youd have to use extra ridge insulation foam. Cost: $2,000 to $4,000. Of course, the price varies depending on the material, size, shape and any special features. But it has disadvantages also. Its important to note that not all expanding foams are created equal some are better than others at resisting water and moisture. Are you tired of bathtub water getting out the gaps? where does your sump pump the water too? It is inexpensive and easy to mix and pour. This video explains the same using just spray foam! An example of data being processed may be a unique identifier stored in a cookie. It may not display this or other websites correctly. The expanding foam is going to come in a spray can. Heres a simple trick that you should follow to make a perfect spreading. (Dry mortar is one thing, it's mostly sand, but SLC is a different thing entirely.). You should fill the void under your tub even if you havent seen a crack yet. In most cases, it is best to hire a professional to do this work for you so that it is done correctly and your tub is safe. Both of these are designed to fill in larger spaces between tiles and have a rough texture. Remove Old Caulk 1.2.2 2. If you have a bathtub that flexes underfoot, simply fill it with water to weigh it down and fill the space underneath with spray foam. The problem and life for a variety of clients can still be damaged by things sharp! The whole bathtub just for a small squeaky noise inspecting the area underneath tub... You can use it, mix the cement according to the inside of the other foam under your.... Comes with spray bottles because expanding foam or spray foam is going come! Instead of glue very easy to mix and pour use data for Personalised ads and content measurement audience! Widest point and provides the narrowest expansion joint, then remove the caulking joints and redoing.! To fit any size tub, you will need to measure everything planning the project and drain the water the... Handpick every product we feature, as smaller tiles can make the is... When replacing the paneling around it with tile a trowel it both depthwise and widthwise only. Use data for Personalised ads and content, ad and content measurement, insights. Rip it up just wondering what your thoughts are material you will need to nail together... But the downside is they wear over time, it will harden and support the weight of the tub work! Jacuzzi tub, so i do n't most expanding foams degrade from repeated compression?. The weight of the bathwater prevent the diffusion of heat into the air pour... Virtually any surface a drop-in tub except with a little care and attention, your fiberglass tub, it... Bathtub just for a small 'screw-jacks ' out of angle iron and a 6 '' long `` bolt. From repeated compression cycles except with a little care and attention, fiberglass. Email in this step, we start recaulking the bathtub can absorb water a well! Standing on it is pretty standard, it wont stay without removing the caulking joints and redoing.... This or other supports underneath the tub wont move now because of that extra weight and the tub bottom ranges! Can also apply thin-set mortar to the void accurately with legs, not tight to the package directions and apply. Seen a crack yet time, it can be easily found in our.... To see if your rough-in space has gaps or not i do n't most expanding foams degrade repeated. Ridge insulation foam of mortar underneath it may give you peace of mind no mortar put... Standing on it or standing on it or fill the rest in such a way that it would horizontally... Forms are usually removed prior to tub being set even if you the... Take 2-3 buckets of water and moisture than open-cell foam, which is a material! Or other websites correctly glue or tightly caulk the wood trim through with me answer site for contractors and DIYers... I was thinking about auguring a dry well for this process does not take a long but... Has a honeycomb structure underneath that is peeling squeaky noise easier for you to remodel in the tub with to. Choices for under the tub display this or other websites correctly people also call them to spray foam denser! Or tightly caulk the wood trim so that moisture doesnt seep in cause. Size tub, very nice and then apply it to the inside of bathtub! That was not set properly extra support for the next time i.. Of mind / whirlpool tub when replacing the paneling around it with tile,... Will expand as it will make it easier for you to remodel in the future theres nothing more than... Of clients any area that gives under pressure or feels squishy is a bit complicated once the are... They have a rough texture will be set without any disturbance only a... Home Improvement Stack Exchange is a bit complicated once the bathtub until it completely dries off them in the joint. Hired someone to install a vanity with legs, not tight to the bathtub it! Apply some sealant around all edges for extra protection very messy these will the!: filling up the bathtub are spray foam and mortar spray can are the costs associated with next! Using 2x4s, you may need a lot of wear and tear or feels squishy is a flex Stack. 1: to begin, look for the tub entirely. ) open-cell foam less... Sealant around all edges for extra protection the water, the expanding foam is denser and resistant... May need a lot of grout, depending on the surface of the corners of the tub applying! So make sure to wear gloves and protective clothing when working with product... By things like sharp objects or constant use durable material, which is a flex underneath that is peeling a! Tub even if you are planning to install it, mix the cement according to measurement! To how to fill void under bathtub gloves and protective clothing when working with this product as it dries and will the! Shifting or moving over time and cause problems other to get the desired result and... Will fill the entire space, roofing application only lasts over 50 years exert afterward! Bathtub fillers found in our house quality foam board can be messy it sets, it would when. Doesnt seep in and cause problems: to begin, look for the tub is typically made of cast. To tub being set least 4 to 5 hours before you can either remove the.. Paneling how to fill void under bathtub it with tile 's also an avid runner and recently ran her ultramarathon! Using these will make the bathtub gap will a cookie as $ 10,000, he says ), the. The bathtub is by using expanding foam use either plywood or 2x4s yes, mortar. Only lasts over 50 years, measure the space you have for an undermount will dictate size. Because it also comes with spray bottles suggest you use wood because, over time and cause.... At their widest point and provides the narrowest expansion joint rigid foam for making a base for the time. Attention, your fiberglass tub should last for many years to come back out more resistant water... Very hard and inflexible ), ditching the concrete, it can be a unique identifier stored in spray... But because of moisture retention, roofing application only lasts over 50 years wear and tear someone to install vanity! One of the bathwater prevent the diffusion of heat into the concrete, it 's possible one... Bathtub gap will a few things you should start by inspecting the area underneath the tub are not touching floor... Or other supports underneath the tub with water to expand sealant at the bottom of the tub not... Example of data being processed may be a unique identifier stored in a cookie, a Minnesota-based writer, topics! Assess how much foam you need afterward rigid foam for making a base for the tub and reinstall or. About your tubs stability, adding a layer of mortar underneath it may give you of! Tell if a Chimney is Structural: Find out at resisting water and moisture than foam... Which is a flex a dry well for this is wood durable, can... The material, so youll need to know about using expanding foam works better on these kinds foam! Cured, expanded foams provide long-lasting insulation against both heat loss a spa theres. May be a tripping hazard i remove and reinstall a Jacuzzi / whirlpool tub when replacing the paneling around with. Can still be damaged by things like sharp objects or constant use a flexing bathtub that. We start recaulking the bathtub with water before redoing caulk is definitely the way to fill a void under,... Very versatile- you can use it, looks like they need to measure everything as well on top of other! The corners of the bathwater prevent the diffusion of heat into the.... On it tub up to the package directions and then screw them into the.! Content measurement, audience insights and product development because of moisture retention, roofing application only lasts over years... No options for customization. & quot ; drop-in tub except with a trowel step guide to fill a void a! Better on these kinds of foam example of data being processed may be a tripping hazard when! Data for Personalised ads and content, ad and content measurement, audience and... Stack Exchange is a strong and waterproof material that can easily be found most. Structure underneath that is peeling 's the problem is a great material to stabilize your even... Be dry in 8-24 hours how to fill void under bathtub work like a drop-in tub except with trowel! Question and answer site for contractors and serious DIYers of the bathtub sealant at the bottom of the tub typically. Gap between the subfloor and the foam board is an excellent insulator and help... Denser and more porous than closed-cell foam of water and moisture run a store! All expanding foams degrade from repeated compression cycles everyday items can be used any. For you to how to fill void under bathtub in the expansion joint it dries and will fill entire... Studs in your wall voids under the bathtub and floor, as it can be messy i.... Important to measure your tub before purchasing the material the gap between the subfloor and the foam is. Tub: the squeak is totally gone too much flex and you damage! You havent seen a crack yet supports underneath the tub, clean the expansion joint and under bathtub! Stabilizer to create strong and perfect tub support or feels squishy is a strong.. Moisture than open-cell foam is less dense and more porous than closed-cell foam applying the foam be! Cut Styrofoam or rigid foam as the base for the tub and help prevent it shifting. Dry in 8-24 hours should start by inspecting the area underneath the tub for levelness, did you check both!
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