If you don't have a stud finder, or if you don't have one that … 2 Tap the carpeted floor with the hammer and listen for dull thud, indicating a joist below. Before I drywall the basement ceiling, I would like to stiffen the floor joists to eliminate bounce, by installing new pieces of 2×10 perpendicular to the existing joists. I would need shoulders less than 14 inches wide to squeeze between the short studs on top of these low support wall foundations. Mostly, the new subfloor material may expand. Find the Joist Location. Then I will need to saw a rectangle out of the subfloor that aligns with the joists. Thanks to the tips I read from others on this forum this project was not too difficult. To use this kit, you’ll need to: Locate the Joist by tapping a hammer around the problem area and listening for a dull “thud.” Load one of the waxed, break-away screws into the tripod assembly. More important to know what you have currently, joist condition, size, span, and on center spacing as … That is an extra 500 lbs. How far apart should I put the new pieces of 2×10? The nails tell you where the first joist is and which direction it runs. So you learned that lesson also? I am thinking and hoping no furnace ducts are where I would like to make an access opening to the crawl space. I tried our electronic stud finder, but it provided no differentiation in readings through the carpet and fairly thick subfloor. If your floor joist is an I-joist, for example, buy an I-joist. My problem is that I cannot yet get into the crawl space, unless I find the location of the floor joists and make an additional door through the floor. Drill another hole about ½ inch to either side until your drill bit hits solid wood all the way through. Drill a 1/4″ hole in this space (that the molding will cover) and insert a bent coat hanger. I should drill a piece here to find out. People drill with nails to start them so that makes me wonder if you couldn't have just used a common nail? I will need to put the carpet down again and cut around the new door. If the bit bends, just straighten it as much as possible by hand. If you don't know or can't find them it isn't all that important. on Introduction. When a floor dips under weight, usually that means that the joists are undersized (or compromised), or that there is no support like a load bearing wall under where you want to place the tank. If she agrees, I will need to pull up the carpet in this corner of the room. That is a good idea. Only remove the molding running at right angles to the joist. The … Peel the carpet up and back to release it from the tack strip holding it down. She graduated from Syracuse University in 2007 with a Bachelor of Fine Arts in musical theater. Any stud finder will read a sheet of plywood as a whole gang of joist. For example, if the distance between the first two joists is 16 inches, measure across the room in 16-inch increments until you reach the area where you need to locate a joist. Countersink the screw head into the subfloor. Just the way you need to find a wall stud before you can attach anything to a wall, you need to locate the floor joists before you can do any structural work on the floor, such as fixing a squeak or dip. It will melt the carpet fibers and you can drill throu without the carpet ravelling. The tape measure presses against the baseboard trim on the inside closet wall and provides a reference point for future work. It worked for the shared wall (1.5"?) If your carpeted floors are squeaking, then it is most likely a problem with your subfloor and joists. The second photo shows how I held the steel rod on a grinding wheel to make the profile. You have an interesting idea. This will help you locate both sides of the joist. When I was drilling one hole the bit stopped cutting and I heard the sound of my bit rotating against the head of a nail. It does not cut fast, but it also does not usually grab carpet fibers and twist them around the bit. With the vent removed, you have a wide, clear view of a cross-section of your floor. Leaves an almost undetectable hole. Press the edge back under the baseboard with a putty knife. How to Find a Floor Joist Under the Carpet 1. I was careful not to cut too deep where I suspected the floor joists were and came back and finished cutting over the top of them with the reciprocating saw laid down as much as possible. I want to know where the floor joists are inside a small closet because I may need to make an additional trap door to access the crawl space nearby under our kitchen. Use the measurement you took to find the joist you're looking for. Other possibilities are 12" and 24" on center, although 16 is very common. The bit did not break through as it should have if it were between joists. Does a spade bit wind up carpeting too? I did some preliminary measuring to determine where a joist might be, knowing that the joists are supposed to be 16 inches on center. I cut most of the hole with a Skill saw and finished the corners with a reciprocating saw. poke around with a few short nails to determine where a joist is. Then I marked the outside dimensions of the hole and started drilling small holes with a very long bit about every 1 to 1 1/2 inch apart until I found the floor joist. 3 years ago. I did learn from the contractor that my one door at the other side of the house is supposed to serve as my access to the whole house, but I would need to crawl through an opening under the floor that is 11 x 17 inches. I was looking for the bit not to break through the subfloor, but to continue cutting after it normally should have broken through. Then I will need to fasten that piece of carpet to the new door. The lesson to me is to use a very smooth piece of rod next time. The joists in this part of the house run at a right angle to the yellow measure tape, which is consistent with the direction they run in the closet on the other side of the house. If I do make a second trap door access to our crawl space, I could always fill the test holes with putty. I am trying to find … Peel the carpet up and back to release it from the... 2. Heat the drill but with a lighter just before drilling through the carpet. Look closely at the carpet near the yellow tape measure. We have had a frozen waterpipe there and I want to check for damage to the pipe, as well as do what is necessary to keep it from freezing again. Continue drilling about 1/4 inch to each side of the good hole until you hit empty space again. Slow rotation speed reduces the chance the bit will grab and twist carpet fiber strands. My theory was that all joists under the subfloor run in the same direction in all parts of the house. 7 years ago If the floor is sagging at 75 gallons, going larger may be a disaster in waiting. I had an idea for making a better bit. How to fix a squeaky floor under carpet. I’m about ready to use the commercial product, “Squeeeeek No More” (Home Depot, etc.) Grip the edge of the carpet in a corner of the room with pliers. The straight part of a wire coat hanger chucked into a drill makes a great bit and leaves no visible damage. Not a piece in my floor mind you, I have some scraps of carpeting lying around. Floor heating vent: Removing a floor HVAC vent is the best way to check for total floor thickness. Usually floor joists run the same direction on all floors; look in basement or attic for direction (usually run the narrow length of a home). I am enjoying posting things I have learned and done since I got my first to…. Stud Finder Sensor Wall Scanner - 4 in 1 Electronic Stud Sensor Beam Finders Wall Detector Center Finding with LCD Display for Wood AC Wire Metal Studs Joist Detection 4.2 out of 5 stars 18,482 $26.99 $ 26 . I cut out an access hole today in our old farmhouse built back around 1920 or earlier. Step 1. To find the joist under the sub-floor from the floor covering like carpet or hardwood floor requires the use of a hammer. Great Idea, this method seems very easy, although I would advise caution if you are uncertain how your wiring and plumbing are run under the home. The wooden beams that support a subfloor are called joists. How to Find Joists Below a Hardwood Floor. If you have central heat and/or air conditioning with floor vents, it is very easy to remove the vents by pulling them straight up. Fetanten 4-in-1 stud finder. This Old House: How Do I Find Joists Under Carpet? Mitchell also regularly edits websites, business correspondence, resumes and full-length manuscripts. This Instructable will show how to locate the joists under the subfloor without pulling up the carpet and without damaging the carpet. Finally, I had found the center of a joist. There are electronic stud finders the have settings for a standard thickness and a thicker wall. That is very easy to detect. 7 years ago Would drilling up from the crawl space, next to the joist save you the trouble of measuring, guessing, making test holes and additional passes through the carpet? on Step 4, Reply of the duplex I live in. The only problem was the subfloor was nailed to the floor joist with some very large nails and they did not come out very easily. How about a new video on finding joists in the second story floor, under carpet, to fix floor squeaks? Make sure you also buy the same type of joist. Those are good points. I wanted to drive some long finish nails to locate the joists, but my longest finish nails are too short to pull out of the carpet again. While most residential construction uses 2x8 joists with 16 inch spacing, there are many other factors you need to consider when determining the proper joist span length.. Joist span and spacing is set by your local building code. Look closely at the carpet near the yellow tape measure. Stephanie Mitchell is a professional writer who has authored websites and articles for real estate agents, self-help coaches and casting directors. Start at one wall and measure 16" increments til you get to your squeeky area; joist should be somewhere near where you measured for a start (if the prior methods don't work). You said your subfloor is pretty thick though. I even went to the trap door shown in the first photo and pounded on the floor. on Step 5. I decided to use some 1/8 inch rod I have to make my own bit. Although the bits are made much smaller. This isn't the same as having a floor squeak when you step on it, which simply indicates that the subfloor isn't tightly fastened to the floor joist in one area. Put a small nail in the hole at the center of the joist. It is the last step to fix rotten floor joist. If the floorboards under the carpet squeak, drive a wallboard screw all the way through the carpet and pad into the floor joist, countersinking the screw head into the subfloor. I had to drill a series of test holes at one inch intervals. 3 Chuck the joist-finding screw into the drill/driver. AND, if possible, how to further fix those annoying squeaks. It is essential to take measurements of the area removed to get the exact subfloor material size ideal for replacement. Wrap a clean cloth around the head of a hammer and secure it to the neck, using a rubber band twisted around it two or … When I located the center of a joist, I made another test hole at a right angle to the measure tape. I tried pounding on the floor with a hammer and tried to detect any change in the vibrations from the hammer blows or their sound. Thanks for sharing. I know where the joists are there, but I still could discern no difference in the sound when pounding near a joist or between joists. https://todayshomeowner.com/video/stopping-squeaks-under-carpet "Twist drills often pull fibers and leave damaged spots in the carpet." If you can't see it, peel the carpet and padding back further until you find the nails. You can guesstimate where the joist is, shoot a screw on either side, go underneath and measure where the joist is between the screws, go back up and use the measurement to hit it. Hobby shops and hardware stores sell brass tubing in quite a variety of diameters. Carpeting makes it slightly harder to find floor studs than it might otherwise be, but don't be put off -- the job still doesn't require special tools or too much time. Generally, the most area will have a hollow sound, a thud sound signify the presence of joist. Share it with us! This all seems like a lot of work, but home repair sites frequently recommend making a new door in the floor to access parts of the crawl space that are otherwise inaccessible. I also finds live electrical wires. A number of test hole locations are within the photo, but they are not visible. Tap the floor from one edge or corner and listen for a thud sound. IF theirs a gap between the wall and the flooring you may be able to see where the sub floor is nailed. They show you where the second joist is. After strengthening the floor joists under your bathroom, you need to cut a fitting subfloor material to the area removed. Did you make this project? I was trying to keep the hole very small and the wood under the floor is about 35mm thick, so it would be difficult to get enough of an "L" shape to feel the joist. Home Tips: How to Find Wall Studs and Ceiling Joists. Find a replacement joist that is the same size as your floor joist. on Introduction. My floor joists are 2x10s, 16 inch on center. Look at the subfloor and find a row of nails, which are attached to a joist. Use a tape measure to measure the length, width, and height of your existing floor joist. This releases any trapped pad under the screw head and allows the carpet to lie flat. Otherwise you now have an area where you can drill till your hearts content looking for the joist. We needed an access near the bathroom and main sewer line. Put the carpet padding back in place and roll the carpet edge back over it. I used the rounded corner of the grinding wheel to make cupped indentations on opposite sides of my bit. The joists in this part of the house run at a right angle to the yellow measure tape, which is consistent with the direction they run in the closet on the other side of the house. That is kind of tricky because you want to cut through the wood flooring and subfloor without cutting into the floor joist. When building a house or even a deck, it is important to confirm you have the correct joist sizes, spans and spacing before you get started. I had to remove a few of the tongue-in-groove oak top boards to get the hole out but will put them back and use a finishing nail gun to hold them in place. To fix a floor covered with deep-pile carpet, drive a wallboard screw through the carpet and pad into the floor joist. Buying the Correct Type of Stud Finder. That's how I do it. 7 years ago Pull the base board off. Pull back the corner of the carpet padding with the pliers. Drive a screw through the subfloor into the joist below and make sure to pull the carpet webbing over the screw head. I just pulled up the carpet in that closet, We had a nice oak floor under the carpet. It may sound like a bad idea to drill holes in the floor, but these test holes are relatively small. Twist drills often pull fibers and leave damaged spots in the carpet. The steel rod I used is much softer than tool steel and may well bend if too much pressure is used when drilling. When the sound indicates a joist, probe the area by pounding a 10d finishing nail through the carpet about an inch. Years ago I tried unsuccessfully to fix a squeaky floor by screwing the subfloor to the joist. The screw is notdesigned to find the joist under hardwood floors. Reply I think a spade bit will leave a bigger hole that ought to be plugged. The smallest bits made in the world are of the spade style that I know of. © Copyright 2020 Hearst Communications, Inc. Joists are normally spaced 16 inches apart, but the distance can vary, especially in very old homes, from 12 inches to nearly 20 inches. Reply First find the where the joist run by removing the quarter round molding from the edge of the floor. Once you’ve determined the joist direction you have three ways to find its location under the carpet. BUT... Those kind of screws were originally designed to re-attach a single board in a place where it had popped loose on a floor made of nailed-down individual boards (especially squeaky stair treads). I drilled test holes through the carpet and subfloor. A multi-scanner that lives up to the versatile expectation set for this handy tool, the Fetanten 4-in-1 stud finder uses an electric signal setup to efficiently identify edges and centers of studs, joists, pipes, metal, and live wires beneath the floor, ceiling or walls in … But, such assumptions can be dangerous and false. 1 Use a hammer to locate a floor joist within the squeaky section of floor. Lets say you are going to 125 gals. 5 years ago. Even the deep scan one work on density, so if you have double sheet rock or plaster they'll work, but they can't tell the difference between wood and wood. A solid sound indicates the presence of a joist under the carpet; in other places, you will get a hollow sound. Using a sharp utility knife, cut a small slit through the carpet webbing, wide enough to allow for a screw head. It was very simple. If you try this process, begin with a very slow drill speed until the bit breaks through the carpet. I believe I payed 15 bucks for it and has come in very handy. I decided to drill, but not with a twist drill. Another idea: Instead of creating a smooth-side bit, I wonder how using a straw as a sheath around a regular bit would work. A number of test hole … In either direction you will feel the hanger bump up against the joist. Will use your tool next time! How to Prepare a Subfloor for Ceramic Tile. At some diminishing point it just doesn't pay to try to put a twist in the shank of a drill. Look for a second row of nails running parallel to the first row. I don't have a grinding wheel, so I'll give that a try sometime and let you know how it works. Note the spot where you got the solid sound and drill straight down with a … Use a stud finder Tap the carpet with a hammer to find the difference in sound over the joist and adjacent empty bay; Utilize the special joist finding tool in … First, try the methods above in Chapter 4: “How to fix squeaky floors from below” if you have access to your basement or crawlspace. Look at the subfloor and find a row of nails, which are... 3. 7 years ago Thank, Phil. This bit cuts more slowly than a twist drill, but its smooth sides do not grab and twist carpet fibers. I cannot get to the kitchen from the door in the photo because there are two low supporting foundations for load bearing walls located between this door and the kitchen. My tool did tug a piece of yarn loose, but that was because the rod I used for my bit had a clump of rough, hard paint on it; and the paint clump caught the yarn. Pull back the corner of the carpet padding with the pliers. 8-O, About: I miss the days when magazines like Popular Mechanics had all sorts of DIY projects for making and repairing just about everything. All in all it went pretty well and now we have a large access hole withing 4 feet of all the major plumbing which is due to be replaced next month. Shine a flashlight at an oblique angle over the subfloor and look for the shine off the nail heads. For all practical purposes, the carpet fibers close over them. If one end is 1/4 of the way into the joist bay on one end it will be 3/4 of the way on the other end. Find a new floor joist with these exact same dimensions. It will still work fine. What Is the Easiest Way to Remove Carpeting? My test holes had all been parallel to the yellow tape measure. A sub scanner would work, but they're way more expensive. The problem isn't the carpet, it's the wood under the carpet. Joists are spaced evenly across the room, so the distance between the two rows of nails is the distance from the center of each joist to the center of its neighbor. I was checking for joist location in a corner of the house where the wires are in the walls and the water pipes would be a few feet away under the next room. If you can feel a soft spot in the floor under the carpet, the subfloor has likely been weakened or damaged. Now I need to convince my wife that we need an extra door into the crawl space so I can check the plumbing for freeze protection or for cracked PCV piping. Grip the edge of the carpet in a corner of the room with pliers. I am trying to gather information before I make a decision on whether to add an access door to this part of the crawl space.. Pictured is the trap door in another closet at the other end of the house. Each … I was able to cut the hole with one side overlapping a joist. 99 $49.99 $49.99 The smallest spade bit I have in a set is a quarter of an inch one. level 1 Winding up a ball of yarn with a twist drill in a carpet leaves a bad bald spot that looks like a neighbor with no experience volunteered to cut your hair. which has a joist … The screw is designed to work on carpeted plywood or chipboard floors. Not that important. The bones in my shoulders are wider than 17 inches. Measure the distance between the two rows of nails with a measuring tape. Great idea. Then drill at a faster rotation speed. Reply Under Tile: When a subfloor is squeaking under tile, there are really only two options. I used 1/8 inch rod for my special bit because it would leave a very small hole. I'm imagining a soft drink type straw from McDonalds, trimmed to length and then crushed as the bit goes in. Once you find the center of one, (they are typically 1 1/2") try measuring over 16 inches and check for center of another. Get it plenty hot. Maybe if you put in the hole a curved steel wire and you turn it around, it is easier to detect the position of the joist, at least tentatively. The Squeeeeek No More®Joist Finding Screwis an easy to use tool that will find the exact location of your floor joists from above the floor. When I tried it, I had wound up quite a ball of yarn before I knew what was happening. on Step 4. My best guesses were very wrong. The first photo shows the profile of the bit. I saw this trick on an episode of This Old House. Good stuff, Phil. 7 years ago If the floor is squeaking under a carpet, we recommend trying a The Squeeeeek-No-More Kit which can be purchased at Amazon. The right size tube on the right drill might work. Thanks.

how to find joist under carpet

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