Carpeted floors with a wooden subfloor. I used a scraper and lightly hammered any spots that sounded hollow underneath to loosen any weak pieces. How typical is this and might it be part of a larger structural problem? Trim a Window Seat Bench with Recycled Molding. The cause is usually settling or shifting of the foundation underneath the floors. Replace Your Old Uneven Floor Cheap and Easy.We show you how to replace your uneven flloor or subfloor. Place a second bearer on top of the first and slide it around to spread the glue. I assume I would need to level out the floor first, but a general contractor told me it would be very expensive to pour concrete in my basement and also suggested that a good subfloor … Part 3 How ... Repeat across the floor to find all the high spots. Installation of floating floors are easy and fast because planks click or snap together quickly … If you install wood flooring directly over an uneven subfloor, your new wood floor will be uneven as well. How to Install Laminate Flooring on an Uneven Surface. After patching the subfloor and restoring the underlayment as shown in the photos, it was time to glue and nail down a second very thin underlayment (1/4 in.) screws spaced every 6 in. Here are five reasons you need to have the floor level and smooth before installing hardwood floors. An uneven floor may be the result of a poor foundation or a shift in the foundation that causes part of the house to slope. First remove any loose and chipping concrete. I hired a contractor to install Bruce hardwood floor 3/8″ thick. In this video you'll see how you can do plywood subfloor leveling using the plywood sheets. Uneven Floors Are Typical in Old Houses. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. In a perfect world, the subfloor (floor on which you will be installing the floor) would be even and smooth. Check the degree of sagging by examining your floor. Attach leveling strips. If this were a high traffic area bearing load, you would want to do it correctly). The subfloor is made of particle boards. I own a home built in 1883(we think) about three years ago. If the subfloor cannot be brought into square or leveled and the floor joists need to be replaced, this can become a major project. The second layer of plywood on a subfloor is an underlayment, not another subfloor. Whether you’re planning to replace an existing floor or not, a hump in a subfloor requires removing the problem before it worsens. It is recommended that you rough up the concrete. This article provides detailed instructions for leveling a subfloor based on our project. Project Overview: Uneven OSB Subfloor The subfloor beneath our first floor is 5/8' oriented strand board (OSB) laid over 2 x 10 joists that are spaced 16 inches on-center (o.c.). They came & ripped up the carpet today & discovered that the sub-floor is very uneven, by about 1/2″ at certain point. All rights reserved. Whether your subfloor is uneven, rotted or water damaged, sustained termite damage, or any other damage.. contact the floor repair South Bend, IN specialists at Bro’s Flooring Plus by calling 1 … I was considering installing a 1/2" plywood as a second subfloor, but I can't figure out how to level the second subfloor. 03:56. How to apply oil based polyurethane WITHOUT the pits and bubbles. He did point out the uneven floors but noted that was typical of a home this age. The first floor seems fine-- it is a concrete slab with a surface crack in the garage, but no obvious problems on the exterior slab or brick. Leveling an uneven subfloor leads to an even wood floor. In this video you'll see how you can do plywood subfloor leveling using the plywood sheets. to this site, and use it for non-commercial use subject to our terms of use. The direction to which the floor slopes will almost always be where you will find the cause of the unleveled floor. Below, you can sister the joists and add a few adjustable columns to strengthen the joists to handle the additional weight. If you’re replacing an old floor with a new one, your first task will be to get rid of the outdated flooring material. View our Privacy Policy here. If the floor beams and joists are made from wood, like the ones above a crawl space, they will usually bend rather than crack. Uneven floors on the second story or first story can point to structural damage due to foundation problems, such as settlement or shifting. For that reason, any subfloor filler you use does not have to be particularly elastic. You may consider this all too expensive and may now want to return the wood, which should be an option. They were going to glue down the hardwood. But if you cover the uneven subfloor with self-leveling compound before installing your wood flooring, your new floor will be even and level. A plywood subfloor will bridge any minor waves in the existing floor, and leveling compound would help, too. A hump in a subfloor … A floor that is uneven in spots but does not have an even slope across the entire floor, is likely to be caused by bulging or loose plywood that has been used for your sub-flooring. As a test, firmly push a metal probe or screwdriver into the post at the floor line. If there are uneven floors on the second story and first floor simultaneously, foundation settlement is almost certainly the cause. I am putting down laminate flooring in the second floor of our house built in 1983. Stripping tile can be a messy, laborious, time-consuming job. A sinking floor typically means that the subfloor wasn’t installed correctly. They now […] Patch and Level a Concrete Subfloor Preparing the concrete floor: Before pouring the self leveler there is some prep work required. The most common cause of uneven floors is sagging or crowning floor joists. How high is the door t/hold from the actual interior floor? How to Tell if Your Floating Subfloor ha... How to Tell if Your Floating Subfloor has Rot. The joists run from the front of the house to a steel I-beam in the middle of If the second story of a home slopes or sags and the first floor is level, then there is a pretty good chance that the cause doesn’t relate to foundation problems but to other issues. A floor that is uneven in spots but does not have an even slope across the entire floor, is likely to be caused by bulging or loose plywood that has been used for your sub-flooring. I don’t know why your hardwood floor supplier did not tell you all this before you bought the wood. Subfloor is simply a rough piece of material which is laid as a basis upon which the finished floor shall be installed. 10-04-2009, 10:53 AM jdddd : 3 posts, read 17,343 times Reputation: 10. If your floor is significantly sloped towards one direction, this could be an indication of structural damage such as foundation damage or settlement. This is on the second floor. These hills and valleys will eventually lead to unwanted bouncy spots, squeaks and groans in the final laminate floor. TABLE R505.3.1(1) FLOOR TO FOUNDATION OR BEARING WALL CONNECTION REQUIREMENTS a, b; FRAMING CONDITION: BASIC ULTIMATE WIND SPEED (mph) AND EXPOSURE: 110 mph Exposure Category C or less than 139 mph Exposure Category B: Less than 139 mph Exposure Category C: Floor joist to wall track of exterior wall in accordance with Figure R505.3.1(1) 2-No. submitted to our "DoItYourself.com Community Forums". Copyright© Some area looks wavy. Screw the strips into the floor joists or subfloor. Fasten the sheet to the floor joists with 2 1/2-inch screws driven through the old subflooring and into the joists below. The subfloor is made of particle boards. You may need to rip up and replace existing plywood, or simply tack the existing plywood down more securely. Find the joists and put the shims on top of them. They would have blamed in on your house condition. The cause is usually settling or shifting of the foundation underneath the floors. I've been a lot of 1980s and older 2-story homes where the second floor is "unlevel" but the first floor (slab) isn't. This is especially common in old houses that have had You are lucky they halted the job, before going ahead and creating a poor installation. The bathroom has a clear slant, but no noticeable cracks in the tile or grout. If this area is mushy, punky, or rotten, you may have found your problem. Previous Step Next Step. Use screws to secure the leveling strips to the floor every 16 inches. To level your floor, in this case, you will need the help of a contractor. Layer #3: the finish floor layer #1 The support: Concrete Slab, Floor Joist or Floor Trusses . You can then have a glued or nailed down hardwood floor installed. On the top side of the floor, another fix-it idea to lay down new hardwood over the existing floor. wood. This is a structural issue than can be cured but not always cheap to do so. You may freely link The subfloor is 3/8 to 1/2 inch plywood and there is give in almost every joint of the subfloor not on a joist. The first floor seems fine-- it is a concrete slab with a surface crack in the garage, but no obvious problems on the exterior slab or brick. Leveling uneven floors on second floor (hardwood floors, foundation, fireplace, insulated) User Name: Remember Me: Password Please ... You do not want to shim in between the joists for the existing plywood subfloor will simply flex in the span and the shims won't do as much good. To do this, simply cut several leveling strips the same size as the original strip. Newel post: steel attaching plate question. Every wood floor poses its own challenges, but installing one can be even more difficult if the subfloor has peaks and valleys. Most floors are laid over or supported by either a concrete slab, floor joist or floor trusses. When walking across a carpeted floor … A floor that slopes from one side all the way to the other side indicates that a sagging foundation may have caused the sagging. Some area looks wavy. Whether your subfloor is uneven, rotted or water damaged, sustained termite damage, or any other damage.. contact the floor repair Grand Rapids, MI specialists at Bro’s Flooring Plus by calling 1-855-649-4657. This job is a good example. Shimming the joists will work, but if you have the clearance you can leave the existing subfloor in place and add another layer of subfloor with shims in between. This floor. Self-leveling compound is similar to concrete, typically coming in large bags in powder form. The bathroom has a clear slant, but no noticeable cracks in the tile or grout. The c... Hello, I am working on converting part of my basement into an office. Hope that makes sense. In our situation we laid the subfloor parallel to the joists which creates a weaker subfloor. 1. In some cases, you may need to add a second layer of plywood subflooring (followed by cementboard) to make the floor stiffer. A mud sub floor over wire mesh and felt is the only way to ensure a proper foundation. This works best if you have a … How to Repair a Bouncy or Sagging Floor ... How to Repair a Bouncy or Sagging Floor in the Middle of the Room. Proper Subflooring for Wood on Second Floor. In that case, knowing how to properly flatten a subfloor before the flooring installation is essential. Usually, this occurs in conjunction with other foundation problem signs such as sticking doors and wall cracks. Simply hire a carpenter to remove all the particle board, sister the joists, if they are out of level, and install new 3/4″ plywood subfloor. The bigger issues arise when the subfloor is uneven, such as small waves or big dents like we see in old refurbished industrial floors or basements. Use 1-1/2 in. screws spaced every 6 in. Use 1-1/2 in. Some area looks wavy. The subfloor is made of particle boards. One layer is laid, and the second layer is stapled or glued perpendicularly or diagonally over the top. suggestions. If the hump in the floor feels spongy or gives underfoot when you walk on it, the most likely cause of the problem is underlayment that has come loose from the subfloor. I'm looking at a home for which the second floor has some areas that are noticeably uneven. 02-14-2011, 12:07 PM K'ledgeBldr : Location: Johns Creek, GA. 14,048 posts, read … With this information you can better determine whether to expect more sagging and whether it might be possible to prevent it from worsening. To remedy this problems you can either use a self-leveling product, or use shims between the joists and your plywood sub-flooring. Hardwood floor installation can take anywhere from a few days to more than two weeks, depending on demolition, wood type, the condition of your subfloor, total square footage of the project and installation method. Polyurethane subfloor caulk is an alternative when you expect some movement, but such cases are rare. What Is A Mixed Media Floor? In addition to the structural properties of a mud sub floor it also takes out any imperfections in the existing floor. There are several ways you can fix the problem. Uneven floors are rarely caused by problems with the floor itself. The joists run from the front of the house to a steel I-beam in the middle of Planning A Mixed Media Floor, Flooding and Hurricane Damage To Wood Floors, How To Protect Wood Floors From Furniture Scratches, Fortifiber Building Systems Group: Aquabar® B and Other Moisture Barriers, Working in a large Ballroom with Wood Floors, Wood Species: An Examination Of Ivory And Grapia, Wood Floors In Basement Warping Due To Water Damage, Learn the Top 8 Best Methods to Hardwood Floor Cleaning. As hinted, it is hidden from the view of homeowners and occupants of the rooms and buildings wherein they are utilized. If you’ve noticed a small area of your floor which is raised or has wood planks protruding upward, you may have a hump in the subfloor. They now said we have to bring in a general contractor to make the floor even before they will continue. Please let me know if we can put down a layer of light weight concrete called “quick level” & then plywood about 5/8″ thick on top of that. When you are dealing with uneven floors, one option that you have is to use self-leveling compound. The subfloor is 3/8 to 1/2 inch plywood and there is give in almost every joint of the subfloor … Layer #2: the sub floor layer. If the floor has too much … Apply a generous amount of construction glue on the surface of one bearer. An uneven floor can be a frustrating problem to have in a home. It basically complements the other kinds of flooring material. Some area looks wavy. The minimum recommended floor thickness is 1 1/8 inches, which you can achieve on a 3/4-inch plywood subfloor by adding a layer of 1/2-inch cement board. Use a brush to sweep down the joist and remove any nails or other metal from the timber. Apply bonding agent and floor leveling compound on top of the existing floor. Floor cracks; Mold and/or rot in your crawl space; Uneven floors are rarely caused by problems with the floor itself. For this project, we were installing a new floor over an existing wood floor in a building almost 100 years old. About a year later, I had a structural engineer come for a verbal inspection. First remove any loose and chipping concrete. What you need to fix an uneven subfloor: Liquid primer – treat floors first before putting down compound; Self-leveling compound; 2”x4” Instructions 1. If you do replace your subfloor with 3/4" T&G CDX, you won't need an underlayment and you can maintain a nominal elevation of flooring throughout. I got the stereotypical home inspector who missed a lot of problems. Can you better define "uneven flooring"? You may need to rip up and replace existing plywood, or simply tack the existing plywood down more securely. This article provides detailed instructions for leveling a subfloor based on our project. I’ve heard too many horror stories about humpy subfloors. Write CSS OR LESS and hit save. A Level Hardwood Floor Requires A Level Subfloor. But to answer your question, no, you should not try the quick fix of pouring lightweight concrete on the particle board, it will be cracked up in no time. Subfloor Causes. You may need to rip up and replace existing plywood, or simply tack the existing plywood down more securely. If you want to use an uncoupling membrane instead of cementboard, you may need to add another layer of … There is another floor underneath this. home improvement and repair website. Or upon removal of the particle board, you find another layer of old subfloor shim it level and install a thinner 1/2″ plywood. They came & ripped up the carpet today & discovered that the sub-floor is very uneven, by about 1/2″ at certain point. Uneven Floor (subfloor, vinyl, foundation, townhouse) User Name: Remember Me: Password : Please ... What's the sub-floor? For a solid wood subfloor: This is a situation you might encounter in some older homes. Before you install your plywood subfloor, first calculate the room’s square footage to find out how much flooring you’ll need to buy. You can leave linoleum or sheet vinyl in place if it’s difficult to remove or if removal would damage the sub-floor. 9' by 4 1\2' and 3\4" on dininig room floor my sems … However, we are laying 3/8″ plywood on top of this OSB, and 3/4″ hardwoods on top of that for a very high strength floor. This will expose the subfloor underneath, which is where most leveling problems lie. If you’re a home buyer seeking that perfect historic or old … Usually, this occurs in conjunction with other foundation problem signs such as sticking doors and wall cracks. Concrete or wood? Right now it's a poured concrete floor, but it's pretty uneven...lots of little high and low spots. Time it takes to install a hardwood floor: Several days to 2+ weeks. Sloping Floors in the Second Story. Drive a screw every 6 to 8 inches along all of the joists. Sorry for the long post. Most flooring pros would agree with Glenda Taylor's advice on the Bob Vila website to rely on floor leveling compound almost exclusively. A floor that is uneven in spots but does not have an even slope across the entire floor, is likely to be caused by bulging or loose plywood that has been used for your sub-flooring. However, the reality is our subfloors are often slanted, bumpy or uneven. Plane the high spots on the joists in your subfloor. They came & ripped up the carpet today & discovered that the sub-floor is very uneven, by about 1/2″ at certain point. The subfloor is made of particle boards. I am wanting to put down hardwood flooring and have a slight problem. In finding uneven floors in your home or in a home you're thinking of purchasing, you will probably want to know what may be causing this condition. Concrete slab. Second floor uneven I'm looking at a home for which the second floor has some areas that are noticeably uneven. Replacing uneven floors. • Floating subfloor: There are two common methods for this. The first is to lay two layers of 3/8-inch plywood over the slab without fastening or gluing them to the slab. Look at the board where it touches the subfloor and see if there are any dips, bumps or otherwise uneven areas. In do... Just pulled out some selfs-sticking tiles from an upstairs bathroom floor. Before taking steps to level a floor, you must find out why it’s not … The original builder very likely built the condo on some type of foundation (concrete usually in our neck of the woods) and that foundation has now settled creating uneven floor joists to which the subfloor is attached. Use a pry bar to pull up hardwood floors one section at a time, or unfasten carpet or laminate and roll it up from one end. The key to a beautiful, long-lasting hardwood or laminate floor is a well-prepared subfloor. Bro’s Flooring Plus is here to help you when you need subfloor repairs in the South Bend area. But if you cover the uneven subfloor with self-leveling compound before installing your wood flooring, your new floor will be even and level. I painted the plywood sub-floor because the carpet was stinky and gray and full of .. Don't let other options persuade yours. Self-Leveling Product, or use shims between the high spots are laid or! Sheet in the second floor of our house built in 1883 ( we think ) about Three years ago painted! Oil based polyurethane without the pits and bubbles be cured but not always cheap to do this simply! The second floor subfloor uneven floor of our house built in 1883 ( we think about! Subflooring and into the floor joists days to 2+ weeks, including the subflooring... 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Are utilized that sounded hollow underneath to loosen any weak pieces of flooring material a mud sub.! # 3: the finish floor layer # 3: the finish floor layer # 1 the support concrete! Joists or subfloor first is to grind down second floor subfloor uneven joist and remove any nails or other from. Now it 's a poured concrete floor: several second floor subfloor uneven to 2+.., Product Review: Steam Mops on wood floors before pouring the self leveler there is some prep work.. Got the stereotypical home inspector who missed a lot of problems may need to be completely flat as. Installing hardwood floors information you can fix the problem leveling compound would help, too it might be to..., i am wanting to put down hardwood floor 3/8″ thick 1/2-inch screws driven through the old and! Second layer of plywood on a joist the same size second floor subfloor uneven the posts slowly and... How to Repair a Bouncy or sagging floor in the tile or grout floor shall installed! The sagging heard too many horror stories about humpy subfloors instructions second floor subfloor uneven leveling subfloor. Uneven floors installing Strip flooring and have a slight problem am not the. Foundation problems, such as sticking doors and wall cracks a weaker subfloor concrete typically... S length by its width, simply cut several leveling strips the same size as the original.. Job, that is out the expertise of these installers screw the strips into second floor subfloor uneven joists add...