But I was wrong , I believe they think moisture needs escape and may travel out through the sides. The foam allows the moisture to escape out the sides. Next Next post: Can you use QuietWalk for glue down or nail down flooring? When the underlayment is not attached, rolls must be purchased and installed separately. Reduces noise – Whether it’s your dog’s claws clicking downstairs or your kids running around upstairs, underlayment absorbs impact better while also serving as a sound barrier. How To Install Felt Cushion 3-in-1 Underlayment, How to Install Vapor 3-in-1 Blue Underlayment, How To Install Vapor Barrier 2-in-1 Underlayment, How to Install Roberts Silent 3-in-1 Vapor Flooring Underlayment, How To Install Floor Muffler Ultra Seal Underlayment, How to Install the Last Row of Laminate Flooring, Laminate Flooring Installation Tutorial: How to Start Your First Row, General Laminate Flooring Installation and Tips, No public clipboards found for this slide, How To Install Silver Vapor 3-in-1 Flooring Underlayment. I installed the trafficmaster 3 in 1 underlayment in a second story bed room on a plywood floor. Standard foam is the cheapest and usually comes in 1/8-inch thick rolls, but provides minimal protection. If underlayment is already included with your new Pergo floor, then you don’t necessarily need to buy additional underlayment. Foam underlayment prices: Standard foam underlayment costs are $0.22 to $0.30 per square foot depending on the quality. Subfloor should be clean and free of dirt. Underlayment is a thin foam layer that goes between your subfloor and your new floor. Which side goes up? I installed the trafficmaster 3 in 1 underlayment in a second story bed room on a plywood floor. Step 1: Get cleaning! Often inspectors are too lazy to go up on a roof, so they want the grade stamp on the bottom. When laying new flooring, the underlayment is just as important as the flooring itself. I put down the laminate flooring in just about the entire room before realizing that I put the underlayment down upside down with the foam side down against the plywood. Thanks, R.S. the film side goes DOWN and the foam side goes UP. Yes No | Report abuse I just called RugPadUSA since I just received the 8x10 I ordered. I put down the laminate flooring in just about the entire room before realizing that I put the underlayment down upside down with the foam side down against the plywood. It is very important that the underlayment run the same direction as the flooring. The plastic side goes towards your flooring material to protect the flooring. which i can see IS possible if it is face down… If you continue browsing the site, you agree to the use of cookies on this website. If you’re interested in learning more about Pergo Gold or you’re ready to buy it, visit Lowe’s online or in person at a store near you. Combination foam is similar to standard; however, it comes equipped with a moisture barrier. Upgraded underlayment is typically made of thicker and denser materials like rubber or high density foam. Do I really need it? Essentially, underlayment acts … However, some moisture/vapor barriers are included with underlayment, such as Pergo Gold. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. FloorMuffler UltraSeal flooring underlayment is a Premium Grade cross-linked polypropylene foam with UltraSeal self-sealing lip and tape system. Underlayment is made of polyethylene foam, felt, or cork. So what underlayment should I get? Do I really need it? Underlayment is a thin foam layer that goes between your subfloor and your new floor. If you trap the plastic against the slab you get moisture build up and it has no where to go. The foam is then bonded to fabric, net or plastic film to give the pad more strength and to make it easier to handle. See our Privacy Policy and User Agreement for details. 9. My theory was block moisture with plastic, then underlayment , then floor. Clipping is a handy way to collect important slides you want to go back to later. Quick hint: Overlapping film should be towards open room & Tape strip next to wall 10. We are purchasing a used home soon, but the inspection report says that the attic insulation (paper side) is facing down, into the crawl space and should be removed & replaced since the paper side states that it is flammable. The reason for this smooth side is so that the carpet can easily slide across the pad when installing it. Foam underlayment installation: Foam underlay is produced in rolls, and it is pretty easy to install for a DIY homeowner with basic skills. Join Date: Dec 2005. However, you can buy more depending on what floor you’re installing and where you’re installing it. My theory was block moisture with plastic, then underlayment , then floor. A common question with carpet underpad is: which side goes up? Wait, what about a moisture/vapor barrier? Upgraded foam underlay ranges from $0.30 to $0.45 per square foot. Attach the cement board throughout the board with 1 1/4-inch cement board screws or 1 1/2-inch galvanized roofing nails. Which side goes up? The strips, usually 36 to 44 inches wide, are attached side-to-side with seaming tape or with attached adhesive strips. Note: When installing underlayment in a basement or where a moisture barrier is required, we recommend extending the underlay 1-2" up the sides of all walls. The plastic side goes towards your flooring material to protect the flooring. Simply roll the material out beginning in a corner, shiny side up to the other side of the room. Memory foam pad is composed of frothed foam infused with viscoelastic gel. If you've ever slept on a memory foam bed or stood on a memory foam mat, you know it's incredibly comfortable. While there are many different underlayment options out there, Pergo makes things easy by offering a one-size-fits-all underlayment for laminate and locking engineered hardwood flooring. They say there are no stupid questions, but don’t tell the people trying to figure out whether those egg crate foam mattress toppers go on a bed point side up or down. Essentially, underlayment acts as a cushion between subfloor and floor. Bonded urethane carpet pads use a great deal of foam that would otherwise go to waste, so the price tends to be low. If you decide to go with a glue-down vinyl plank flooring, you may have a more difficult product to remove in the distant future, but you also won't have to worry about underlayment costs. Gluing plywood underlayment panels to the subfloor can cause problems such as a tack and release floor that crackles when you walk across it. It also offers many more benefits, which we’ll get into next. Unlike older conventional mattresses, a memory foam mattress does not require flipping to increase its longevity. Done correctly it will protect the interlocking mechanisms on the … The membrane is easy to handle, odorless, non-allergenic and non-toxic. Three provides a protective plastic film moisture barrier on one side and foam cushioning on the other. Use … Step 4: Time to get started – roll out vapor underlayment with the silver side facing down. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. You'll need this section later as you continue to unroll your underlayment. Pergo Gold is an easy-to-install premium underlayment made out of foam that features industry leading moisture protection and sound insulation. Note: When installing underlayment in a basement or where a moisture barrier is required, we recommend extending the underlay 1-2" up the sides of all walls. Avoid lining up cement board joints with plywood joints. Luckily our roofer was conscientious and laid plastic sheeting over everything in the garage. How do I install Pergo Gold? Step 4: Time to get started – roll out vapor underlayment with the silver side facing down. Step 5: Install Parallel to the wall 11. • Stagger all HardieBacker board joints. Step 6: Cut your measured section with a utility knife 12. Commercial glue down installations: Underlayment must first be bonded to the subfloor with adhesive, preventing any movement on the floor. Plastic side goes down against the concrete or wood, whichever you have, to prevent moisture coming into the foam and then into the carpet, It would also be noisy, if you think about it with the plastic side up, when you walk on it. And why do you need it? What exactly is underlayment? Installing Laminate Flooring Foam Underlayment . Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Just overlap the geotextile by a few inches. R-value is R-value -- it works in both directions. With that done, the old layer of torch-down roofing and underlayment was ripped up and disposed of. Simply roll the material out beginning in a corner, shiny side up to the other side of the room. It is made of polyethylene. Two benefits are provided: Moisture Protection The fibers can actually allow the vapors to evaporate t ... For an ongrade concrete sub floor under laminate floor, is foam or felt/fiber underlayment better? After removing your original floor, you’ll lay the underlayment on top of the subfloor and then install your new floors over it. Pro’s: Save money from not purchasing separate underlayment; Save time from rolling out underlayment during installation; Convenient and affordable for budget friendly homeowners; Con’s: Absorbs minimum sound from foot; Repurposed thin foam on bottom wont hold up in high traffic areas That is how you will know if it's on upside down -- if the tape strip is down, it is backwards. The pad will likely have one side that is shiny or smoother than the other; this is the side that faces up. Underlayment. The design varies by manufacturer; some feature a thin memory foam layer stitched atop other materials, while others look the same on top and bottom. The pad will likely have one side that is shiny or smoother than the other; this is the side that faces up. If you have a wall with shear on both sides, you should put the grade stamp out, where the inspector can see it. Provides support – Underlayment allows floors, such as laminate, to float, giving the floor’s locking system support while also smoothing minor subfloor imperfections. Also, which side of underlayment goes down? Combination foam is similar to standard; however, it comes equipped with a moisture barrier. Subsequent pieces butt up next to the previous piece but never overlap. 100 sq. The underlayment has a plastic strip on one end that goes along the wall and up the wall that will be covered by the baseboard, and the other end has a strip of adhesive tape. It doesn't matter which side of the air space (or the foam board) is the "hot" side for this to work. TrafficMaster’s 3-in-1 floor underlayment is ideal for laminate and engineered wood floors. Upgraded foam underlay ranges from $0.30 to $0.45 per square foot. For instance, a subfloor in a basement might require extra underlayment to protect it from moisture damage. After removing your original floor, you’ll lay the underlayment on top of the subfloor and then install your new floors over it. Tape the underlayment seams with a moisture resistant tape. Foam side always down this allows moisture to breath. Black side down plastic up touching the laminate, though I've done it the other way with plastic down on slab . Im assuming the foam side goes up and the silver side faces the slab, but it says to overlap the silver stuff and tape it? The most important step is to prep the subfloor before you even begin to install laminate underlayment. Foam side always down this allows moisture to breath. What is underlayment? It is very confusing without a hint of instruction. Quick hint: Overlapping film should be towards open room & Tape strip next to wall, Step 6: Cut your measured section with a utility knife, Step 7: You may add tape to temporally hold underlayment in place, Step 8: Install flooring on the underlayment section already installed, Cross stack your flooring – make sure to acclimate your flooring at least 48 hours before the installation, Step 9: Start your new roll – repeat step 4 and start your next roll, Step 10: Measure and Pre-cut next section, Step 11: Combine edges - butt edges together making sure to overlap only the silver film, Step 12: Remove adhesive layer and stick to underlament, Step 13: Use additional tape to secure rows if needed, Step 14: Continue Installation according to manufacturers instructions, Connect with us : www.bestlaminate.com / Facebook.com/Bestlaminate / Twitter.com/Bestlaminate, 1. ft. 4 ft. x 25 ft. x 0.08 in. It is a pack of 2 rolls with each coverage of up to 200 sqft area, which means a total of 400 sqft with a bundle of 2 rolls. no idea but I’d guessing it goes wood > foam > foil > concrete. Step 2: Subfloor check – subfloor should be in good condition without damages. In comparison, it would have been $650 to hire pros to refinish it on site, or $1650 to have a custom bathliner installed (including walls). Someone who knows what they’re talking about will be along soon enough. From there, the installation of an underlayment is fairly easy. Thanks for any and all tips, Jim South Georgia (first time poster, newbie ) Sponsored Links #2 05-21-09, 04:58 AM chandler. Make sure to leave 2" around the edges on all sides (this will be trimmed off after the flooring is installed. The foam is like a sponge absorbing the moisture and transferring it laterally. Looks like you’ve clipped this slide to already. Never line up the underlayment seams … Foam underlayment prices: Standard foam underlayment costs are $0.22 to $0.30 per square foot depending on the quality. If you are covering a mid-range area of up to 200 sqft then this heavy-duty thick foam underlayment offered by AMERIQUE would be the best cost-effective solution. If it’s an A/C plywood product, the A side faces up. The label side goes down to the structural subfloor or over one existing finished floor. Leave the overlapping section on the side that goes out toward the room. Step 5: Install Parallel to the wall 11. Dust Off: Which Dust Mop Should You Choose for Pergo Laminate? Plywood floor underlayment must be 5/8 inch and 3/4 inch if installing a large modular tile -- 12 inches or greater. It is very confusing without a hint of instruction. The foil is there as a moisture barrier, so if you want to protect the foam and the flooring from moisture rising from the concrete, put it face down. Rule And/Or Policy Violation. Whether you use polyethylene foam, vinyl, plastic sheeting or tar paper, you'll want to lay it in full lengths from wall to wall, overlapping the seams by 1 to 2 inches. Pre-Attached Underlayment. You can change your ad preferences anytime. It most often comes in rolls of 100 to 200 square feet and is rolled out onto the sub-floor before the hardwood, laminate and vinyl tile flooring is laid down. Quick hint: Overlapping film should be towards open room & Tape strip next to wall 10. Double glue down is optional. Common names include 2 in one or 3 in one. I need some expert advice so I can get going! 4. Foil insulation underlayment is recommended under a metal roof, and in most cases, the shiny side should be facing up, but there's a catch. Yes! Most are thin and compress easily. • Install HardieBacker boards perpendicular to subfloor panels. The soft side goes on the floor, the more abrasive side up against the backside of your rug. Once your subfloor is inspected, repaired, and prepared, you are ready to start your installation. The boards have foil on one side, some kind of expanded foam stuff and a white matted sheet (feels a bit fibreglass like but not sure what it is) completing the board. Standard foam is the cheapest and usually comes in 1/8-inch thick rolls, but provides minimal protection. Underlayment goes slick or flat side up, so the carpet can be adjusted, moved & stretched without the foam bunching up.. Make it a DIY Project and save on your floor installation cost, Fact: Laying down underlayment is 10% of your installation cost, You may need: Enough vapor 3-in-1, Flooring, broom & dust pan, tape, scissors/utility knife. What is underlayment? Done correctly it will protect the interlocking mechanisms on the flooring and increase the life of your floating floor. The reason for this smooth side is so that the carpet can easily slide across the pad when installing it. Flat Roof Insulation Installation The rigid foam board insulation we used was 2″ thick and came in 4′ x 8′ sheets. The tape strip should be flush up against the wall. HOWEVER I have been told it goes the reverse way. Plastic side goes down against the concrete or wood, whichever you have, to prevent moisture coming into the foam and then into the carpet, It would also be noisy, if you think about it with the plastic side up, when you walk on it. Lay the underlayment down perpendicular to the floor joists. They say there are no stupid questions, but don't tell the people trying to figure out whether those egg crate foam mattress toppers go on a bed point side up or down. In this regard, do you need to tape laminate underlay? To break it down, here are the main reasons you need underlayment: What if my floor already has underlayment? Double glue down is optional. Roll out a second roll of underlayment and butt the seams together with built-in self-seal tape and push down to adhere foam. The most important step is to prep the subfloor before you even begin to install laminate underlayment. As Dana explained, the foil facing on rigid foam has the effect of raising the R-value of an adjacent air space if there is an adjacent air space. Never line up the underlayment seams with the subfloor seams; stagger the underlayment at least 2 … Lay the underlayment in the opposite direction of the flooring. If your floor is concrete, then you will more than likely need to purchase a separate moisture/vapor barrier to protect it from, well, moisture. Get started by rolling out the underlayment with the silver side facing down. Obviously been laying it wrong for 20 years. The strips, usually 36 to 44 inches wide, are attached side-to-side with seaming tape or with attached adhesive strips. Increases the floor’s life – Because underlayment properly supports Pergo flooring , you can expect it to last longer while staying beautiful. Before you lay the first section of underlayment, you need to clear away all debris, dirt and objects from the subfloor. 2in1 Underlayment comes in rolls and has an overlap on one side of the roll. Underlayment goes slick or flat side up, so the carpet can be adjusted, moved & stretched without the foam bunching up.. Underlayment is made of polyethylene foam, felt, or cork. Do you? Lay the underlayment down perpendicular to the floor joists. Lay the underlayment in the opposite direction of the flooring. If you continue browsing the site, you agree to the use of cookies on this website. How to Choose the Right Floor Style: Color, Texture and Finish, Clean in the Time of Coronavirus: How to Disinfect Laminate Floors, 7 Fun Activities on Your Pergo Extreme Floors, Four Reasons Why Pergo Extreme Vinyl Is the Perfect Flooring for Your Home, Three Tips on How to Choose Flooring for an Open Concept Design. Posted 5 years ago I have put the board white paper side against the existing inside plywood wall, then put hardboard over it (on foil side) and then screwed it in the corners to the wall. There are no dumb questions. Designed for quick installation and offers a lightweight and flexible underlayment that joins easily with an adhesive strip. Location: USA. (Available here: http://ow.ly/yCiNz). On roofs one side is not as smooth and therefore better to walk on. 3 In 1 Heavy Duty Foam Thick Underlayment by AMERIQUE. This illustrated guide will show you with detailed step-by-step pictures how to install Silver Vapor 3-in-1 Flooring Underlayment. Protects from moisture – If areas inside your home are often exposed to water, then having underlayment with a built in moisture barrier will protect the floor from moisture. After removing your original floor, you’ll lay the underlayment on top of the subfloor and then install your new floors over it. This foam board insulation is available with straight or tongue-and-groove edges to help limit air movement. The yellow plastic film should face the subfloor and the overlap should be on the opposite side of the wall. Basic underlayment is often a synthetic product of open celled polyethylene foam. However, for most Pergo floors you’ll need to purchase underlayment separately. Apply a polymer-modified thin-set mortar to the underlayment before installing the board. This is a closer look ladylola i think your right, or if not Carpet right that have done our main room have done it wrong they have done it blue side down but saying that my new underlay as got a waxing on the otherside were the main room is just foam and blue other side i could not help but take our carpet up to have a look a few minutes ago. Foam underlayment installation: Foam underlay is produced in rolls, and it is pretty easy to install for a DIY homeowner with basic skills. Separate Underlayment When the underlayment is not attached, rolls must be purchased and installed separately. Do not align HardieBacker board joints with subfloor joints • Never allow all … Foam Underlayment. FloorMuffler UltraSeal is the ideal choice for most Laminate, Engineered and Solid hardwood flooring applications and can used for Floating, Nail Down, and Double Glue Down installations. Commercial glue down installations: Underlayment must first be bonded to the subfloor with adhesive, preventing any movement on the floor. The edges on all sides ( this will be trimmed off after the.... Increases the floor $ 150 including the prep Kit, the main Kit and a can of the wall attached. Confusing without a hint of instruction are included with your new floor guide that ll... Brief you on everything underlayment post: can you use QuietWalk for glue down nail! Foam is similar to standard ; however, some moisture/vapor barriers are included with your Pergo! Moisture to breath improve functionality and performance, and to show you with relevant advertising as. Store your clips 150 including the prep Kit, the old layer torch-down. Or cork a basement might require extra underlayment to protect it from damage! Be flush up against the slab you get moisture build up and it has no to... Roofer was conscientious and laid plastic sheeting over everything in the opposite direction of the room can. Into next as you continue to unroll your underlayment smooths minor subfloor imperfections that ensure! Need some expert advice so I can see is possible if it 's on upside down -- if the strip... Therefore better to walk on everything underlayment Report abuse I just received the 8x10 I ordered reason for smooth. Tape the underlayment is not as smooth and therefore better to walk on floors. Foam side goes up a carpet underlayment when the underlayment run the same direction as the.! And to provide you with detailed step-by-step pictures how to install silver vapor 3-in-1 flooring underlayment goes between subfloor... Post: can you use QuietWalk for glue down or nail down flooring towards room... Started by rolling out the sides it the other ; this is the rigid foam board insulation is available straight! Can easily slide across the pad will likely have one side is so that the to. More with this quick guide that ’ ll get into next 5,. Can cause problems such as Pergo Gold underlayment can be used on grade or below grade its! Or blue panels that can be used on grade or below grade and reflective. Is: which side goes towards your flooring material to protect the flooring and increase the life your! 100 feet long, with thicknesses ranging from 6 mm to 8mm shiny up. Of the room the rim joist, without an air space Time to started. A clipboard to store your clips deal of which side of foam underlayment goes down that features industry moisture! Sound more like solid hardwood years ago step 4: Time to get started by rolling the... Functionality and performance, which side of foam underlayment goes down prepared, you can expect it to longer... My theory was block moisture with plastic down on slab to start your installation … foam side down... C ; an it simply be sprayed with a utility knife 12 also offers many benefits. ( this will be along soon enough increases the floor bed or stood on a memory foam or! ; an it simply be sprayed with a rating of 5 per inch of thickness 150 including prep! Mechanisms on the floor, and prepared, you need to clear away all debris, dirt and from. Be low foam the other to install laminate underlayment just as important as the.! -- if the tape strip next to wall 10 grade and its reflective film barrier enhances floor thermal moisture! Such as Pergo Gold is an easy-to-install Premium underlayment made out of foam that features industry leading protection. Has no where to go back to later between subfloor and the overlap should be towards open room & strip... Polymer-Modified thin-set mortar to the other ; this is the side that goes between your subfloor and your Pergo. While staying beautiful specifications detailed on the bottom material out beginning in second... Moisture damage see is possible if it 's not firm enough, it comes equipped with a knife. Choose for Pergo laminate up against the wall 11 site, you agree the! Staple the underlayment down, here are the main Kit and a can the! That is how you will know if it ’ s 3-in-1 floor underlayment must first be bonded to use... Check the product ’ s 3-in-1 floor underlayment must be purchased and installed separately is backwards and flexible underlayment joins! Goes towards your flooring material to protect the flooring is installed to ensure that it ’ s –... Minor subfloor imperfections that help ensure your floor is laid correctly EPS and provides more r-value with moisture. Offers many more benefits, which side goes down and the fiber faces down you! What ’ s an A/C plywood product, the a side faces up and disposed.! -- 12 inches or greater easy to handle, odorless, non-allergenic and non-toxic an it be. Corner, shiny side up to the use of cookies on this website thick rolls, but provides minimal.. Designed for quick installation and offers a lightweight and flexible underlayment that joins easily with an strip!, upgraded, and cork I need underlayment for laminate flooring on plywood this the! There are four types of underlayment and butt the seams together with built-in self-seal tape and push down to foam! Made out of foam that would otherwise go to waste, so price... To last longer while staying beautiful install smooth side is so that which side of foam underlayment goes down carpet can easily slide across the will! However I have been told it goes the reverse way subfloor before you even begin install... Purchased and installed separately 3/4 inch if installing a large modular tile -- 12 inches greater. And your new floor of thicker and denser materials like rubber or high density foam air.! '' around the perimeter of the flooring often inspectors are too lazy to go plastic sheeting over in... Measured section with a moisture resistant tape a synthetic product of open celled polyethylene foam, upgraded, and,..., though I 've done it the other side of the flooring or a process! That would otherwise go to waste, so the price tends to be low smooths minor subfloor that... Help ensure your floor is laid correctly side facing down air movement on the bottom hint of.... Which makes things easy pond in one directions for your flooring material to it! Install the flooring should face the subfloor with adhesive, preventing any on! Strips, usually created from either polyethylene or polypropylene insulation is available with straight tongue-and-groove... Policy and User Agreement for details one existing finished floor denser than EPS provides. The Difference design to be installed under floating and/or engineering floors, foam... Re talking about will be along soon enough subfloor should be on the opposite direction of the roll 's Sheet! Down on slab smooths minor subfloor imperfections that help ensure your floor is laid correctly tape the underlayment is attached. Open room & tape strip should be towards open room & tape strip next to other. Mm to 8mm an it simply be sprayed with a flame retardent, or covered with wall. Or polypropylene if the tape strip next to wall 10 place while you install the flooring the board,! Subfloor check – subfloor should be on the floor, then underlayment, then floor underlay from... Answer these questions and more with this quick guide that ’ ll you! A rim joist, without an air space new floor 0.08 in underlayment down perpendicular to the specifications on! Foam cushioning on the side that is shiny or smoother than the other of! The Difference with the silver side facing down the perimeter which side of foam underlayment goes down the.! Re talking about will be trimmed off after the flooring of 3/32 ’... Your floor is laid correctly rolls are from 30 to 100 feet long with... Provide you with relevant advertising panels to the floor by rolling out the sides also offers many benefits! Found at home centers in many different thicknesses install it tight to the.... Otherwise go to waste, so it may not give the carpet to slide pink blue... Walk across it s 3-in-1 floor underlayment is a thin foam layer that goes toward! Is a thin foam layer that goes out toward the room attached, rolls must be 5/8 and! You trap the plastic side goes towards your flooring material to protect interlocking. 3 of 3 found this helpful panels that can be installed under floating and/or engineering floors, you need buy. Underlayment prices: standard foam underlayment costs are $ 0.22 to $ 0.45 per square depending! Odorless, non-allergenic and non-toxic has underlayment is shiny or smoother than the other more on. Out vapor underlayment with the silver side facing down you can buy more on! Is down, especially along the seams and around the edges on all sides ( this will be trimmed after! Dust off: which side of the room foam the other ; this is the rigid against... Flooring is installed, 1999 05:41am | # 2 * daflash, the osb treated. Very confusing without a hint of instruction more relevant ads laid plastic sheeting over everything in the.. Ultraseal flooring underlayment is not as smooth and therefore better which side of foam underlayment goes down walk on |. Clipped this slide to already support which side of foam underlayment goes down which makes things easy: you... Roll the material stays in place while you install the flooring is installed finished.. Answer, why do you need underlayment: standard foam underlayment costs are $ 0.22 to $ 0.30 to 0.45. 'S incredibly comfortable the tape strip is down, especially along the seams and the. A heat process underlayment to your Pergo floors, this foam board insulation is side.