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There is a connection between the how to correct a bouncy floor and how to fix a bouncy floor information. more searching has to be done for Got Bounce Part 2: How to fix a floor deflection in an existing floor, which will also be related to how to fix bouncy floor from above. How To Fix A Bouncy Floor - How to Fix Springy and Spongy Floors

56 Things About How To Fix A Bouncy Floor | How To Fix Bouncy Floor

  • Wood floor joist are horizontal structural framing members placed on their edge running from wall to wall or wall to beam. These floor joists are often 2 x 6, 2 x 8, 2×10 or 2 x 12 pieces of lumber running parallel to each other that the sub-floor is laid on. They are usually spaced 12, 16 or 24 inches apart; the size and spacing is based on the length of the span and load (weight) that they’re carrying. - Source: Internet
  • This problem is usually found at the edge of the room, where your floor meets the wall. If you have an issue in the centre of a room or you notice sagging in the floor, this could be a more serious issue. You can read more about sagging floors by clicking here - Source: Internet
  • An excess amount of moisture is never a good thing, no matter where in the home it manifests. But it can be a headache when it affects the kitchen so badly that your floor wobbles underfoot. One of the most common ways that moisture affects the kitchen floor is when the basement or crawl space underneath the room is too damp. - Source: Internet
  • When dealing with a bouncy floor, it is very important to discover what caused the problem in the first place. There is no point fixing your rotten joists if the original problem persists. This will just result in your new joists sharing the same fate, and also suffering with rot. - Source: Internet
  • Bouncy floors can be sightly worrying. After all, your floors should be solid, so when it moves under foot, this can be a cause for concern. But are bouncy floors really dangerous? Or is it a minor problem with an easy fix? - Source: Internet
  • Spongy and bouncy floors generally are of little concern unless the cause relates to a serious structural issue. As homeowners we quickly get used to a floor that has a little bouncy or spring to it as we walk across it and seldom give any thought to whether there is a problem. Whats funny is that a first time visitor or home buyer will notice that a floor is spongy; they will often stop when they notice it and even shift their weight up and down to verify that it is spongy. - Source: Internet
  • Structural engineer Thor Matteson, author of Wood Framed Shear-Wall Construction Guide (International Code Council, 2004), replies: While a bouncy floor isn’t necessarily indicative of a structural problem, the allowable deflection still can be annoying. However, bridging is one of the least-effective solutions for bouncy floors. The most obvious solution is to add a beam supported by posts under the floor joists. You don’t have to install the beam at midspan of the joists, but the farther you go from midspan, the less effective the beam becomes. If your basement has a slab floor, you would need to cut through the slab to pour footings for the posts. - Source: Internet
  • Floor trusses are engineered framing members which are manufactured off site and transported to the building site by truck. They basically serve the same purposes as a floor joist but are often more economically and can be used on longer spans. Just as floor joist, they usually carry the sub floor. - Source: Internet
  • If all of the above are addressed and your floor still feels bouncy check your flooring expansion gaps. Expansion gaps allow or give more room for proper expansion and contraction of your floating floor due to regular changes in temperature. If not you could cut down on your planks/boards along the walls to create more space for them to expand and contract. - Source: Internet
  • These days, many new floors are framed with I-joists, a type of engineered lumber that’s a fraction of the weight of conventional lumber and capable of spanning greater distances. Still, if asked to span too great a distance, I-joists will bounce. As a rule, the same kinds of methods that take the bounce out of solid-lumber floors work for I-joists. But when Tom sisters or stiffens the underside of I-joists, he uses plywood. - Source: Internet
  • The damages may occur due to a variety of causes such as termites, their favorite dish being wood on your subfloor joists. These small insects cause such great harm and weaken the structural strength of the joists and in extreme cases cause failure. The left damages or cracks and other strong external forces like a heavy tree crushed on the home or extreme weight from let’s say a kitchen island can weaken support to the sub-floor resulting in a bouncy floor. - Source: Internet
  • Flatness of the floor. If the concrete slab is not flat but dips in places or has a hump, then the flooring laid on top of the slab may bow or be spongy when stepping on the areas that dips or does not have a fully flat surface. Laminate flooring is susceptible to this and may even make a creaking of snapping sound when stepped on. - Source: Internet
  • It can also happen in first floor timber joists, which are fitted above a damp crawl space. In this instance, water is able to rise from the ground below and soak into the joists. There is also a greater risk of water vapour and condensation - Source: Internet
  • Blocking, short pieces of 2x stock the same depth as the joists, stops sideways deflection and ties the joists together so they can effectively share floor loads. Tom installs a row of blocking in the joist bays at mid-span whenever a span exceeds 9 feet. He staggers the blocking along a chalk line so he can drive three or four 16d nails through the adjacent joist and into the ends of each block. - Source: Internet
  • To fix this problem, you have to resecure the boards to the subfloor, which isn’t difficult if you can get under the floor. If you can pinpoint the locations of the squeaks, a few well-placed screws driven into the subfloor should hold them down. Be sure not to oversize the screws. - Source: Internet
  • Sagging floors result from failing floor joists in the crawl space underneath your house. These problems can result from open crawl space vents or doors, excessive moisture and humidity, and wet, rotting wood. A sagging floor typically implies a sagging floor joist underneath it. Mar 9, 2015. - Source: Internet
  • Issues with the floor joists and related parts. Foundation settlement problems. The basement or crawl space has moisture problems. - Source: Internet
  • When laminate floorboards are affected by the moisture content in the air or subfloors, the edges rise from the subfloor. Another cause of bubbling or buckling is direct water damage. When excess water on the surface is not cleaned immediately or the floors are wiped with a wet mop, this can lead to bubbles. - Source: Internet
  • Whenever anyone walked across the kitchen floor in the home where This Old House general contractor Tom Silva grew up, teacups trembled in their saucers and pots and pans rattled on the stove. “It was nerve-racking,” Tom recalls. Eventually his father, a carpenter, went down to the basement with Tom in tow and reinforced the undersized floor joists. - Source: Internet
  • By the time your kitchen floor is bouncy, the damp problem has already gone too far to be fixed with most DIY solutions. Similar to a settling foundation, you need to have your basement or crawl space as well as the kitchen inspected by a professional. Once they know the extent of the damp and damage, they can advise you on the next steps. - Source: Internet
  • Bouncy joists can definitely be dangerous. If enough damage is caused, there is a very real chance of a section of the floor collapsing. This could result in serious injury. Not to mention considerable damage. - Source: Internet
  • Trusses undersized, spaced too far apart or sub floor not proper strength for span. Trusses that are undersized for the weight that they are carrying will often sag, be bouncy or spongy when walked upon. Basically, undersized floor joists or trusses, or spacing too far apart may lead to sponginess. - Source: Internet
  • Water that could come from leaks from the roof or faulty pipes and from the outside like an adjacent kitchen garden could cause damage to the sub-floor. Materials such as plywood which are used to make up the sub-floor do not stand up to water. The plywood-veneer glued together disintegrates after a while as a result of too much exposure hence bounciness may occur. - Source: Internet
  • If you find you have uneven or even subfloor debris, ensure your fix it to have the sub-floor relatively flat to avoid bouncy floating floors. This can be done by adding a layer of plywood or fix an underlayment for laminate flooring. This could act as a slight cushion for any anomalies on your sub-floor. Good quality underlayment is also essential so make sure to steer clear of lackluster underlayment that will result in bouncy floors eventually. - Source: Internet
  • A less obvious approach is to add a beam not supported by posts, or a strongback. As shown in the drawing, the strongback will stiffen the floor by spreading the loads from one or two joists to several adjacent joists. You could use a 4×4 or a 2×6, depending on how much basement headroom you can surrender. - Source: Internet
  • It’s important to make these improvements carefully. If existing joists have been weakened due to rot or insect damage, glue and fasteners won’t hold well, and your work may be ineffective. Loose blocking or an underfastened subfloor won’t bring any benefit, so take extra time and care during installation. Also, you can use jacks to relieve the load on joists while the work is being done. Jacks improve the effectiveness of your floor-stiffening work. - Source: Internet
  • A well-designed wood floor feels stiff as you walk on it but still gives slightly under foot, absorbing some of the impact of your steps. Too much bounce, though, can make the china cabinet wobble. You can shore up floor joists and reduce the bounce in a number of ways, but the six methods outlined here represent a mix of common and not-so-common solutions. The best choice depends on access to the joists, obstructions in the floor system, or current remodeling plans; one technique or a combination may be your most practical solution. - Source: Internet
  • As incremental parts of a building’s structure, joists are not easily replaced. You can, however, strengthen the joists by securing another length of wood to the existing joist, called “sistering,” or reduce wobbly floors with block inserts between the joists, called “blocking.”. - Source: Internet
  • While joists and subflooring can be a problem in new houses, this is more an issue with older homes. How so? Most new homes have a tighter design for floors. This basically means that there is less space between joists, beams, and other support structures. Older homes tend to have wider areas between these, which then can lead to bouncy floors. - Source: Internet
  • Tom’s house was built in 1765, but bouncy floors aren’t just an old-house problem. Even structurally sound, code-compliant new floors can deflect, or flex, more than feels comfortable. There are a variety of ways to stiffen a floor; the method (or methods) Tom chooses depend as much on practicality as on effectiveness. For example, sistering with new lumber — the fix Tom’s dad used — makes sense only if the joist bays are not cluttered with electrical cable, plumbing lines, and ducts. - Source: Internet
  • The bouncy floor is a common problem, more so if you have a floating floor that is neither nailed nor glued down to the sub-floor. The floating floor is a method of installation for a variety of flooring materials such as engineered wood, luxury vinyl, and laminate. So what could cause these floors to be bouncy and how do I fix it? - Source: Internet
  • The best way to limit annoying flex in a floor is to make sure that joists are sized correctly before a house or addition is built. Building codes specify the minimum joist depth and spacing (typically 12 or 16 inches on center) for spans up to 20 feet, but those requirements are intended to prevent plaster ceilings from cracking, not to eliminate springy floors. “If you build to code minimums, you most likely will have some kind of bounce,” says Steve Frederickson, a registered professional engineer. He says that a floor system should never deflect more than one-half inch, regardless of the span. - Source: Internet
  • Moisture stains on the floor may indicate that there has been a leak or moisture issues. Check the base boards and lower portions of the wall for stains as well. If dark discolorations are noted, then there may be a mold and mildew, which usually means that there is a moisture problem. Musty odors are another indication of mold or mildew. - Source: Internet
  • Should an engineer miscalculate or the builder fails to follow the plans, then a flooring system may sag, be spongy or even fail. This does not happen very often. However, if there has been remodeling, an addition or walls moved and there was not a set of engineered plans, then problems may arise. If no permit was obtained, the likely hood of improper engineering or poor workmanship increases, and problems may arise; anywhere between minor to major. - Source: Internet
  • In older homes the sub floor may be 2×6’s or 1×6’s laid perpendicular or at a 45 degree angle to the floor joists or trusses. In some cases (i.e. older homes on a raised foundation) with a post and beam support system; 4×4’ or 4×6’s may be used in place of floor joist or trusses. - Source: Internet
  • In many cases, you will be able to cut back the section of rotten joist and leave the remaining healthy timber. Once you have done this, you can insert a piece of new joist the same length. To fix this in place, you can use a technique called sister joist. See image below - Source: Internet
  • Fix bouncy floors by adding bridging, adding a layer of plywood or adding a wall or beam. We’ll show you three ways to stiffen up your bouncy floor—by adding bridging, installing plywood along the joists and adding a wall or beam under the floor. Any one of the three can solve your problem, depending on your situation. - Source: Internet
  • Ideally, the sistering joists should run the full length of as many existing joists as possible, starting with those in the center of the floor frame. They should also be slightly deeper (e.g., 2x10s sistered to 2x8s) and as such may need to be notched to rest on a mudsill (see illustration). - Source: Internet
  • Many homes on raised foundations may have a post and beam construction supporting the floors. It is not uncommon for this type of construction to have post piers that will settle or shift over time. This changes the level of support for the home and often results in some floors being bouncy or spongy and if the soil is an expansive type of soil and there is poor drainage; then the home may even experience seasonal sponginess. - Source: Internet
  • There is no reason why you cannot fix this yourself. However, this requires some proficiency in carpentry and you will need the help of at least one other person. Especially if you plan on adding more joists. That being said, you can also enlist the help of a reputable repair guy who can quickly assess the reason why your floor is bouncy and fix it. - Source: Internet
  • I suspect that the second-floor framing has strapping attached to it and performs better because of this rather than just because of the ceiling drywall. Still, I suggest covering all areas underneath the first floor’s subfloor with drywall no matter which of the above methods you try. I make this recommendation not for strength, but for fire safety: I don’t know what sort of use your basement gets, but I sleep better knowing there’s a 5/8-in. layer of heatabsorbing gypsum board between my family and the stuff in my basement. - Source: Internet
  • A wood or laminate floor can only bounce when there is a gap between the underside of the plank and the sub-floor. When floor planks are laid onto the uneven subfloor, they form bridges over the dips in the floor. When weight is applied, the wood flooring can then bend or bounce. - Source: Internet
  • There may be no or insufficient cross bracing or blocking between the joist or trusses. Blocking and cross bracing helps transfer part of a floor load to the adjacent truss or joist. Doing this helps stiffen a floor and reduce sponginess or bounciness. - Source: Internet
  • Rough up the subfloor with 60- to 80- grit sandpaper. Apply construction adhesive between all the joints of the existing subfloor. This will help eliminate existing squeaks. Apply construction adhesive to the subfloor as you apply each piece of new plywood. - Source: Internet
  • Homes that are built on a concrete slab seldom have spongy floors, but there are two conditions where they may have a spongy floor. Usually the sponginess will only be in a small area (i.e. 2 to 4 square feet) and not the entire floor. - Source: Internet
  • The finish floor layer is the top layer. It may consist of carpeting, tile, vinyl, linoleum, laminated flooring or other similar products. In addition to the floor being bouncy or spongy, you may see cracks in the tile or grout, if it’s a tile floor or hear a snapping or creaking sound if its a laminated type of floor. - Source: Internet
  • Ed. Note: This is the second of two articles on proper floor framing. Got Bounce?, appeared in the August 2012 issue of ProSales and dealt with mitigating floor deflection in new home construction. - Source: Internet
  • This technique works for one of two reasons, depending on the individual floor. One is that the extra OSB increases the stiffness of the floor, making it vibrate at a higher frequency that is not perceived as annoying by most people (For more on floor vibration, seePractical Engineering, 11/98). In some cases, however, the increased mass of the OSB actually lowers the frequency of vibration, but it doesn’t tend to matter because the increase in mass also increases the inertia of the floor. In other words, the heavier floor is harder to start vibrating, so the problem goes away. - Source: Internet
  • We are looking at a major structural problem. This needs the attention of a professional repair company. Their experience in the field will allow them to correctly identify the degree of settlement, what the scope of the damage is, and then provide you with options to fix your home. - Source: Internet
  • A healthy floor is a steady floor. Unfortunately, hardwood floors are prone to a rather odd problem. Making your way over to the kettle can feel like you are traversing a sponge or walking the plank on a pirate ship. - Source: Internet
  • I’ve got a 45 year old home with oak floors and 2×10 joists (obviously not engineered). The wife is not liking the sound of the china cabinet when people walk by it. I have easy access to the floor joists from the basement. What is the best technique for resolving this bouncy problem? - Source: Internet
  • A quicker and cheaper solution is to attach full sheets of ¾-inch plywood to the bottom of the joists, creating what Tom calls a “giant, monolithic box beam.” Starting at mid-span, apply construction adhesive to the bottom edges of the joists and fasten the plywood sheets — long edge perpendicular to the joists — with 8d ring-shank nails or 1¾-inch screws. Wedge 2x4s between the new plywood and the basement or crawl-space floor below to take some weight off the joists until the adhesive cures in a day or two. “Adding that extra layer makes a big difference,” Tom says. - Source: Internet
  • Bouncy floating floors could be a cause of concern as feasibly they could be a sign of water seepage or issues with your sub-floor. However, it should not be a cause for worry as you can easily fix it or in some cases not be a problem at all. This is because floating floors are installed over a pad that compresses when you walk and the floor moves hence a little bounce is fine. - Source: Internet
  • Settlement can cause your kitchen floor to become bouncy in several ways. Perhaps it compromised the integrity of the supporting beams or joists. But whatever happened, all causes remove the necessary support that a floor needs to stay steady. - Source: Internet
  • Trusses that are undersized for the weight that they are carrying will often sag, be bouncy or spongy when walked upon. A long piece of wood will tend to bow when weight is placed on it, this is natural, however, building codes and engineers have guidelines on how much is acceptable or safe. The closer that floor joists or trusses are together, all other things being equal, the more weight that they can carry and there is less bounciness or deflection. - Source: Internet
  • Tom’s solutions for fixing bouncy floors, shown here in order of effectiveness, are easiest on the first floor, where joists are accessible from the basement or crawl space. Stiffening upper floors typically requires removing some or all of the finished ceiling below. Remembering his boyhood kitchen, Tom makes sure that any new floor he builds is rock-solid. Learn how to fix your bouncy floor with the four methods listed below. - Source: Internet
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How To Fix A Bouncy Floor - How to Take Bounce Out of Floors

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