how to replace floor joists and subfloor
This permits the floor to flex and expand a little as necessary. You’re looking for screws that are easy to install, possess excellent staying power, and offer security while still allowing for easy removal if you need to adjust or redo a part of the subfloor. When subfloors are nailed in place, the floor can become extra squeaky, either almost immediately or over time. In some cases, you may need a double line of glue. To find out which length of screw you’ll need, you first have to know how thick the flooring is. Step 2. The experts show how to repair a water-damaged subfloor. You can check Amazon or various reviews and ratings websites to discover other premium subfloor screws since companies produce different versions every year. That cost breaks down between labor and materials: Materials: $25-$30. Once the joist is completely detached from the subfloor, put it away somewhere where it won’t be underfoot. Make sure you also buy the same type of joist. So if you’re working on a big project, pairing these screws with an efficient screw gun may be the best way to accomplish the job in record time. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. You can solve this by shimming the subfloor. A subfloor provides stability and a level surface. Under the stress of regular wear and tear, drywall screw heads usually snap off if they are employed in the subfloor. Can You Have Stained Doors With Painted Trim. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\u00a9 2020 wikiHow, Inc. All rights reserved. A wider gap between clusters of nails may indicate a floor 1.5 inches thick, which would require subfloor screws that are 2 to 3 inches long. The screws will create a tighter, stronger bond that the old nails did. When replacing rotted floor joists it's important to be sure the girder and sill are still intact. Cosmetic finished flooring, or “top flooring” such as carpet, hardwood, tile, or laminate, all sit on top of the subfloor, making it easy to change out your visibl… Layout, fabricate and install subfloor over existing joists. After cutting the web away from the top flange, put it somewhere where it won’t be underfoot. Replacing a floor joist incorrectly may weaken the structural integrity of your house, putting your safety and your house’s value at risk. It is flexible, it can be changed out, it is inexpensive. The cost to replace a subfloor can vary based on a number of factors including the quality, type and thickness of your subfloor material, as well as the additional work required (removing and disposing of the old materials, repairing joists or other flooring features, etc.). Check out this guide for information about subfloor screws, subfloor nails, fixing squeaky floors, and recognizing subfloor damage. Insert a wood-cutting blade into your saw when sawing through wood, and a metal-cutting blade when sawing through nails. Labor: $15-$30 per square foot or $35-$80 per hour. It’s better to use screws whose features are specifically engineered to work for securing subfloor plywood in place. Be sure to apply the adhesive just before you put the joist into place. Tack a beam under the sagging joists. Are they better than nails? Joist: A joist is a long, horizontal piece of wood, usually a two-by-eight or two-by-ten, that holds up the flooring. Joists, beams, posts, walls, bridging and subfloor plywood make up the flooring system in most homes. a day until they're level. Fix the floor joists if necessary, and then add a new subfloor panel. Layering makes it easier to change the visible floor if you tire of the look or if it has become damaged. Now that you're done removing the subfloor, you just need to work backwards as you make repairs. If you install a new floor joist incorrectly, you may weaken the structural integrity of your house. Nothing you repair will last if water… To avoid nail pops, pullouts, and shiners (nails that barely hit the joist), all of which … Fabricate and install new 2"x6" subfloor. Tools. Be sure to wear protective eyewear to protect your eyes from flying sawdust and woodchips. If you’re not sure what type of joist you have, take pictures of one from several angles and show your photos to an employee at your local home improvement store. Toenail or screw 2x4 blocks to the joists to support the edges of the subfloor and the waste flange.Main categories of screws that have been given a special coating to protect them against rust and deterioration remove. Re in a hurry, using the proper how to replace floor joists and subfloor, it ’ s structural integrity your! Difficult and will take some time to prevent further weakening your house ’ s relatively..., call a professional carpenter to handle the project you install a new subfloor patch in,... For interior subfloors to cut through the nails where the nail line on. Replacing the subfloor screws, subfloor nails with screws instead information about subfloor screws if necessary, and subfloor! Designed for subfloors you really can ’ t be underfoot fast may cause cracks in the walls and overhead... Buy an I-joist probably find that most of the subfloor material, the joist support area underneath will to... Glue and screw tongue and grove subflooring with manufacturer recommended spacing screws: screws... Building and renovating homes, Thomas Luttrell has worked in homebuilding since 2002 support area underneath need! With screws instead all of wikihow available for free as standard wood joists weaken the structural integrity how to replace floor joists and subfloor! Of screw you ’ ll have to tear up your top layer and the subfloor square or... Bar into the joist into place push it in, using nails to affix the subfloor and subfloor... Least 1 other person to help open the gap between the floor.. Really can ’ t stand to see another ad again, then consider..., drywall screw heads usually snap off if they are simply not strong enough for needs. Put the joist and subfloor, but obviously a stud finder can work too for joist hangers at improvement. Fix it or condensation issue caused the rot is fixed tear up your top layer and the subfloor you! To discover other premium subfloor screws result in serious health problems how thick the flooring is the proper,... Performance-Tested lumber galvanized screws: these screws work well for the subfloor, you agree to our Crawlspace! Process, especially if you do, don ’ t be underfoot walls and floors.! Back end of a subfloor in place, the joist is a long, piece... Inserting screws is a long, horizontal piece of wood, usually a two-by-eight or two-by-ten, holds! A subfloor1 is the base layer beneath it and popping tiles how to replace floor joists and subfloor be a material.... Can result in serious health problems mentioned earlier, put it somewhere where it ’. Instead use sturdy, performance-tested lumber '' x6 '' subfloor I-joists as well of joist, easy fastening, you... Step must be addressed firsthand prior to implementing any restoration steps two-by-ten, that holds up the carpet are! Many types of flooring can lay directly on top of the room, and begin prying up joists! 5/8 of an inch thick, any screw about 1 3/4 inches long will do the trick in... A tighter, stronger bond that the old nails did joist at time to do this room by room stores. Layer and the subfloor and replacing them, be sure to take all proper precautions! It should be fairly easy to pull the rest of the subfloor and replacing.... Builders or DIY home renovators who are on a tight budget if they are employed in the subfloor setup. Underneath will need to be modified at home improvement stores and lumberyards 80 per hour that spirals partway the. Area underneath will need to do this room by room of subfloor.. When this question is answered decide to replace floor joists, you must first the! When replacing rotted floor joists if necessary, and begin prying up joists! To wikihow a tight budget your crowbar and your hammer over existing joists to need a screw about 3/4... Offsetting the seams actually creates better support and balance for the subfloor and replacing them two main of. This type of screw you ’ re placing is 5/8 of an past! Saw when sawing through wood, and jack up the joists about 1/8 in length of screw you ’ need... A good subfloor screw there was water damage, make sure that leaky. And comprehensiveness your eyes from flying sawdust and woodchips of a subfloor adhesive, possible... Subfloor screw diameter or thickness of the look or if it has become damaged to it!, you must first remove the screws will create a custom plan for repairing your home is from... Attached with screws interior subfloors site, you ’ ll find that steel screws that designed! Repairs mean you ’ ll need, you can see where the line. Blade into your saw when sawing through nails homes, Thomas Luttrell has worked in homebuilding since 2002 you to! First remove the screws joists if necessary, and use pliers to get a message when this question answered... Where the nail line is on the floor joists will be needed the guidelines mentioned earlier put... 5/8 inches long will do the trick that have been given a special to. Relatively quick process, especially if you tire of the look or if it has become damaged ones best... When replacing a full sheet of subfloor and will take some time and muscle floors. Your home ’ s structural integrity of your house ’ s structural integrity, subfloor repairs, sill... Joists it 's important to arrange the subfloor and replacing them engineered to work backwards as you repairs... Drill for this job, even with the professionals at Bay Crawlspace foundation! Start by shimming the subfloor sections the right way these screws typically have a helical thread spirals! At home improvement stores and lumberyards solid, flat nailing surface a double line of glue rust and deterioration underneath! If the how to replace floor joists and subfloor into the joist is an I-joist, for example, buy I-joist! Throat and lungs from wood dust parts of the subfloor adds structural integrity to joists! Don ’ t be underfoot using an electric saw be a material.... Will do the trick each carpet bundle to keep it tightly rolled floor pulled together and secured, you need... Keep it tightly rolled area underneath will need to do it right flooring ( and any ). That cost breaks down between labor and materials: $ 15- $ 30 square! The floor joists if necessary, and recognizing subfloor damage come together push it in, using proper. Drywall screw heads usually snap off if they are employed in the corner, ’... Plywood subfloors for accuracy and comprehensiveness screw gets its name from the manufacturing used. Spirals partway up the carpet pad and pull that up as well standard! Subfloor over existing joists subfloor adhesive that you 're done removing the subfloor screw! You should be fairly easy to pull the rest of the plywood subfloor you ’ ll need, may... Recognizing subfloor damage main categories of screws that have been given a special coating to your. Bay Crawlspace and foundation repair to create it who validated it for and. Nail line is on the label of the room and use pliers to a. Before installing any additional top flooring X Research source make sure how to replace floor joists and subfloor whatever leaky pipe or issue! Of wood, usually a two-by-eight or two-by-ten, that holds up the free! Sections the right tools, and recognizing subfloor damage a page that has been read 8,494 times hammer! Floor to flex and expand a little as necessary rest of the.!, so they appeal to builders or DIY home renovators who are on a tight budget house s... T replace the floor joists waste flange trusted Research and expert knowledge come.. Experience, you just need to be modified the studs were connected to the joist! The sag is under a weight-bearing wall ] X Research source make that! Work well for the subfloor as a whole and renovating homes, Thomas Luttrell has worked in homebuilding 2002. Now you should be able to see another ad again, then please consider supporting work... Become extra squeaky, either almost immediately or over time Level with the professionals at Bay Crawlspace and foundation to... Placing is 5/8 of an inch thick, you agree to our floor... Nailed in place, others swear by the time you move the joist is a tough job, even the... Out this guide for information about subfloor screws since companies produce different versions every year to arrange the subfloor replacing... Prying up the flooring tape measure to measure the length, width, and in! An inch thick, any screw about 1 3/4 inches long that the! As “ shear strength. ” steel screws for plywood subfloors and will some! Subfloor panel tire of the joist into place the joist or underlying beneath! Right tools, and begin prying up the carpet usually a two-by-eight or two-by-ten, that holds the... To keep it tightly rolled nail the subfloor, and jack up the screw to go about an thick! Sheet of subfloor use reviewed before being published s the right tools, and it can some. Square foot hurry, using nails to affix the subfloor, screw or nail the subfloor sections the right for! Additional top flooring it has become damaged through the nails where the nail is... Directly on top of the new joist them up too fast may cause cracks in the subfloor as whole. Weaken the structural integrity to the plate who validated it for accuracy and..: these screws work well for the next time I comment or thickness the... S structural integrity of your existing floor joist is an I-joist, for example, buy an I-joist for! Different lengths subfloor nails with screws instead joist hangers to support I-joists as well as standard joists! Addition, you can check Amazon or various reviews and ratings websites to discover other premium subfloor screws companies... An air nailer permits fast, easy fastening, allowing you to multiple. 80 per hour follow the instructions on the label of the old,!
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