If the subfloor cannot be brought into square or leveled and the floor joists need to be replaced, this can become a major project. Subﬂoor is simply a rough piece of material which is laid as a basis upon which the ﬁnished ﬂoor shall be installed. A Level Hardwood Floor Requires A Level Subfloor. This is on the second floor. They now […] I ask because I am not following the inspectors asessment. This will expose the subfloor underneath, which is where most leveling problems lie. • Floating subfloor: There are two common methods for this. Uneven Floors Are Typical in Old Houses. They now said we have to bring in a general contractor to make the floor even before they will continue. If … A plywood subfloor will bridge any minor waves in the existing floor, and … Use 1-1/2 in. The subfloor is made of particle boards. 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. First, measure the difference between the high and low points of the floor. They came & ripped up the carpet today & discovered that the sub-floor is very uneven, by about 1/2″ at certain point. When you are dealing with uneven floors, one option that you have is to use self-leveling compound. suggestions. I don’t know why your hardwood floor supplier did not tell you all this before you bought the wood. Either case it’s a floor carpentry job, that is out the expertise of these installers. The direction to which the floor slopes will almost always be where you will find the cause of the unleveled floor. Review the information below to help you determine what might be causing your uneven floors. However, the reality is our subfloors are often slanted, bumpy or uneven. Apply bonding agent and floor leveling compound on top of the existing floor. Some area looks wavy. Use a brush to sweep down the joist and remove any nails or other metal from the timber. 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.) Second floor uneven I'm looking at a home for which the second floor has some areas that are noticeably uneven. They now said we have to bring in a general contractor to make the floor even before they will continue. Subfloor Causes. Concrete slab. Do this by multiplying the room’s length by its width. I am wanting to put down hardwood flooring and have a slight problem. If there are uneven floors on the second story and first floor simultaneously, foundation settlement is almost certainly the cause. A sinking floor typically means that the subfloor wasn’t installed correctly. Painted Plywood Sub-floor: State of the Floor Address - Thistlewood Three and a half years ago we painted the plywood sub floor. Question: I hired a contractor to install Bruce hardwood floor 3/8″ thick. Find the joists and put the shims on top of them. 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. You can leave linoleum or sheet vinyl in place if it’s difficult to remove or if removal would damage the sub-floor. They came & ripped up the carpet today & discovered that the sub-floor is very uneven, by about 1/2″ at certain point. Do this by multiplying the room’s length by its width. In our situation we laid the subfloor parallel to the joists which creates a weaker subfloor. 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. Every wood floor poses its own challenges, but installing one can be even more difficult if the subfloor has peaks and valleys. The subfloor is 3/8 to 1/2 inch plywood and there is give in almost every joint of the subfloor … How typical is this and might it be part of a larger structural problem? For this project, we were installing a new floor over an existing wood floor in a building almost 100 years old. But if you cover the uneven subfloor with self-leveling compound before installing your wood flooring, your new floor will be even and level. What Is A Mixed Media Floor? To test for the flatness for laying laminate flooring on an uneven subfloor, lay a 10-foot long 2x4 board. Yep. Usually, this occurs in conjunction with other foundation problem signs such as sticking doors and wall cracks. You may need to rip up and replace existing plywood, or simply tack the existing plywood down more securely. With this information you can better determine whether to expect more sagging and whether it might be possible to prevent it from worsening. 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 may need to rip up and replace existing plywood, or simply tack the existing plywood down more securely. Installing Strip Flooring and Avoiding Future Squeaks and Pops, Product Review: Steam Mops on Wood Floors. I painted the plywood sub-floor because the carpet was stinky and gray and full of .. Don't let other options persuade yours. Use 1-1/2 in. All information is provided "AS IS." Fasten the sheet to the floor joists with 2 1/2-inch screws driven through the old subflooring and into the joists below. screws spaced every 6 in. The second layer of plywood on a subfloor is an underlayment, not another subfloor. Attach leveling strips. To do this, simply cut several leveling strips the same size as the original strip. To level your floor, in this case, you will need the help of a contractor. 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. Some area looks wavy. Self-leveling compound is similar to concrete, typically coming in large bags in powder form. Here are five reasons you need to have the floor level and smooth before installing hardwood floors. In do... Just pulled out some selfs-sticking tiles from an upstairs bathroom floor. If this were a high traffic area bearing load, you would want to do it correctly). They were going to glue down the hardwood. 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. I’ve heard too many horror stories about humpy subfloors. You can then have a glued or nailed down hardwood floor installed. Leave a 1/8-inch gap between the ends of … submitted to our "DoItYourself.com Community Forums". A floating floor is easily installed without using glue, staples or nails, making it an exceptional DIY floor option. The joists run from the front of the house to a steel I-beam in the middle of The cause is usually settling or shifting of the foundation underneath the floors. Uneven floors are rarely caused by problems with the floor itself. There are several ways you can fix the problem. The subfloor is made of particle boards. Another option that you may have is to grind down the floor. Proper Subflooring for Wood on Second Floor. The key to a beautiful, long-lasting hardwood or laminate floor is a well-prepared subfloor. However, with masonry foundations, soil issues can actually cause foundations to break. 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. When you need more strength than one piece of timber can give you, you can ‘laminate’ two bearers together with glue and nails. I used a scraper and lightly hammered any spots that sounded hollow underneath to loosen any weak pieces. As a test, firmly push a metal probe or screwdriver into the post at the floor line. 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. Subfloor bearers need to be strong enough to hold the rest of the floor up. Installation of floating floors are easy and fast because planks click or snap together quickly … Apply a generous amount of construction glue on the surface of one bearer. 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. Often the reason for the second-floor sloping relates to framing issues, poor engineering, past … If you install wood flooring directly over an uneven subfloor, your new wood floor will be uneven as well. Step 2. I'm looking at a home for which the second floor has some areas that are noticeably uneven. If you’re a home buyer seeking that perfect historic or old … Most flooring pros would agree with Glenda Taylor's advice on the Bob Vila website to rely on floor leveling compound almost exclusively. Usually, this occurs in conjunction with other foundation problem signs such as sticking doors and wall cracks. 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. Cement board follows the flow of the existing floor and so will the tile. When walking across a carpeted floor … The subfloor is the decking installed on top of flooring joists; the finished floor is then installed on top of the subfloor. In a perfect world, the subfloor (floor on which you will be installing the floor) would be even and smooth. What you need to fix an uneven subfloor: Liquid primer – treat floors first before putting down compound; Self-leveling compound; 2”x4” Instructions 1. 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. This article provides detailed instructions for leveling a subfloor based on our project. Place a second bearer on top of the first and slide it around to spread the glue. This compound can potentially be utilized on a concrete slab or a wood subfloor, and it works well when you are dealing with dips in the floor. How to apply oil based polyurethane WITHOUT the pits and bubbles. 1. Second Layer Below Floors: Subfloor. All rights reserved. How to Tell if Your Floating Subfloor ha... How to Tell if Your Floating Subfloor has Rot. The bathroom has a clear slant, but no noticeable cracks in the tile or grout. These hills and valleys will eventually lead to unwanted bouncy spots, squeaks and groans in the final laminate floor. 02-14-2011, 12:07 PM K'ledgeBldr : Location: Johns Creek, GA. 14,048 posts, read … Patch and Level a Concrete Subfloor Preparing the concrete floor: Before pouring the self leveler there is some prep work required. Use screws to secure the leveling strips to the floor every 16 inches. Questions of a Do It Yourself nature should be If the entire slab is uneven, you may have to use a self-leveling concrete compound to smooth it out. Some methods may require a contractor while others could be a DIY fix for a handyperson. 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. If the floor beams and joists are made from wood, like the ones above a … Trim a Window Seat Bench with Recycled Molding. Can you better define "uneven flooring"? Uneven Floor (subfloor, vinyl, foundation, townhouse) User Name: Remember Me: Password : Please ... What's the sub-floor? The cause is usually settling or shifting of the foundation underneath the floors. How high is the door t/hold from the actual interior floor? We do not want regular concrete because it would be too heavy. Joists If your floor is significantly sloped towards one direction, this could be an indication of structural damage such as foundation damage or settlement. I was considering installing a 1/2" plywood as a second subfloor, but I can't figure out how to level the second subfloor. Screw the strips into the floor joists or subfloor. It is recommended that you rough up the concrete. On the top side of the floor, another fix-it idea to lay down new hardwood over the existing floor. It basically complements the other kinds of ﬂooring material. 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. This is a structural issue than can be cured but not always cheap to do so. Before you install your plywood subfloor, first calculate the room’s square footage to find out how much flooring you’ll need to buy. 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. You are lucky they halted the job, before going ahead and creating a poor installation. He did point out the uneven floors but noted that was typical of a home this age. 1995-2018 MH Sub I, LLC dba Internet Brands. If this area is mushy, punky, or rotten, you may have found your problem.