how to replace subfloor on second floor

7 Cracking and popping tiles are a sure sign that … You can reduce the humidity level in your house with a dehumidifier or air conditioner, but that’s expensive if your only goal is to stop toilet ... You can glue a thin foam liner to the inside of your tank to insulate it. Fill the damaged area in the concrete subfloor with the vinyl concrete patch material. Labor: $1,100-$2,600. The stud finder will either beep or flash once it locates the joist. Remove the screws when replacing a full sheet of subfloor. © Copyright 2020 Hearst Communications, Inc. Basic labor to repair subfloor with favorable site conditions. How to Repair and Refinish Laminate Countertops, 60+ Ways to Use Up Thanksgiving Leftovers. You may need to work the patch material into the crack with the trowel. Improper nailing. At some point in time, a wall will be damaged enough to require a repair. Average costs and comments from CostHelper's team of professional journalists and community of users. Make sure you also buy the same type of joist. Use this step-by-step process to smooth out rough wall surfaces. If the spacing increases to, but is no more than 19.2 inches on center, the minimum thicknesses become 3/4 inches for plywood and OSB alike. Consult a professional if there are any reframing needs due to building codes. Repeat this on the other side of the squeaky area. Don't miss your favorite shows in real time online. If only the area directly below the flange is rotted, you can install a two-piece steel closet flange support. Wedge shims between the joist and subfloor, and use a clawhammer to tap them into place. But if your floor is severely rotted, say more than an inch beyond the flange, you’re stuck replacing the flooring around the toilet. This article illustrates the proper repair process. Find a replacement joist that is the same size as your floor joist. Done during new home construction. On the top side of the floor, another fix-it idea to lay down new hardwood over the existing floor. To avoid nail pops, pullouts, and shiners (nails that barely hit the joist), all of which … Start by completely removing the damaged materials. Remove a floor vent using a screwdriver. Turn off the toilet valve and flush the toilet to drain the tank. © 2020 Discovery or its subsidiaries and affiliates. The labor costs for a professional to work on subflooring are usually between $25 and $30 per hour, … I have explored and searched and have not had much luck from online publications I can find about this. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. The experts show how to repair a water-damaged subfloor. We love to DIY. Preparation for installing floor tile depends on the type of subfloor in the room you are tiling. The average cost to replace or repair a plywood subfloor in a 306-square-foot room costs $555, or between $490 and $600. Now that you're done removing the subfloor, you just need to work backwards as you make repairs. 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… Fix clapboard siding with these simple steps. DIY experts show how to get rid of a squeaky floor with these steps. Hardwood thickness will usually be between .5 inches (1.3 cm) and 1 inch (2.5 cm), but it's important … Complete instructions for replacing a badly rotted window, including repairing cracks, replacing drywall and sealing the window. We had professional teppanyaki chefs prepare food on our hardwood floor and take a few whacks at it with machetes and axes just so we can show you how to repair it. Cracked and popping tiles could be a material issue. Measure the thickness of the current hardwood. Find a new floor joist with these exact same dimensions. A permeable material, such as tar paper, allows condensation to dissipate more efficiently than an impermeable one like sheet plastic and is better for the subfloor. It goes under the flange and transfers the load of the flange and toilet (and you) out onto more solid surrounding wood. For more information, download our PDF about types of subfloors. This article provides step-by-step instructions and pictures on how to make structural repairs by sistering floor joists alongside weak joists. You can solve this by shimming the subfloor. Sponge the water in the bottom of the … Use the piece of damaged plywood as a template and cut out a fresh piece of plywood. Layering makes it easier to change the visible floor if you tire of the look or if it has become damaged. Cut and remove damaged subfloor. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. Hammer the new piece of plywood in place with 8D common nails (every 6 inches) being careful that you are nailing into the board you screwed into the floor joist. The two materials that most builders use are plywood and oriented strand board (OSB). Start by completely removing the damaged materials. You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings. Host Amy Devers shows how to repair damaged hardwood flooring. How much repairing floor joists should cost. Repair vinyl flooring with these steps on how to patch it. How to Fix Springy and Spongy Floors. Use galvanized 8d nails or deck screws to fasten the new plywood to the floor framing. Use 2x6 lumber to double or “sister” the existing floor framing and provide a solid base for the new plywood subflooring. Whether you're installing a hardwood floor on the first or second floor of a building, you need a solid subfloor that won't sag and that will hold nails. A subfloor is the bottom-most structural level of your floor. If the joists are spaced 16 inches on centers or less, the minimum required thicknesses are 5/8 inches for plywood and 23/32 inches for OSB. Once you've located the joists, you can then drive the screws into the joists on one side of the squeaky area. Pry up a loose board in the floor so you can measure the thickness of the wooden plank. If the spacing is greater than 19.2 inches, the minimum plywood thickness is 7/8 inches, and that for OSB is 1 inch. Equipment: $30-$50 for tools for all project types. Use a circular saw set to 1” depth to cut the subflooring back beyond the damaged areas until you reach solid structural framing. Repairing a bungalow's siding is easy. This will ensure the final subfloor is level as well. All rights reserved. $3,328. Hardwood floors can be damaged by any number things. Such an accident can cause major structural damage. In fact, tiling on a second floor is the same as tiling on any wood subfloor, whether it's the first floor, third floor or second floor. You need to know the wood thickness before you can start sawing into the floor to prevent your circular saw from damaging the subflooring underneath. Your contractor will also check to make sure the floor joists aren't sagging and are level. Use a pry bar to remove any protruding nails and vacuum up the demolition debris. Materials: $3,600-4,400 for repair and replacement. Second dilemma: Do I install the drywall right to the concrete floor and then install the subfloor, or keep the bottom edge of the drywall at or slightly above the subfloor level? Over time, a sink or refrigerator water leak can damage and even destroy flooring materials and the subfloor below it. Get video instructions about kitchens, bathrooms, remodeling, flooring, painting and more. It works well and it's cheap. Use a circular saw set to 1” depth to cut the subflooring back beyond the damaged areas until you reach solid structural framing. Fabricate and install new 2"x6" subfloor. Solutions to a sweating toilet. What Size Plywood Do I Use for a Subfloor? We simulated the damage of a tree falling on a roof by dropping a piano from a crane. Do not fit the new plywood tightly against the old subflooring – leave a 1/8” gap to allow for natural expansion. A springy or spongy feeling could … The sheets should be installed with a 1/8-inch expansion gap between them, and there should be a vapor barrier between the subfloor and the flooring. The experts show how to repair a water-damaged subfloor. Includes planning, equipment and material acquisition, area preparation and protection, setup and cleanup. However, you can strengthen the subfloor with a layer of cement backerboard and then install tile on the floor as you would with any other tiling project. 41.2 h. $1,380. This method of laying a sturdy subfloor on top of joists and then topping the subfloor with a cosmetic-only flooring top creates a tighter, stronger structure. A plywood subfloor will bridge any minor waves in the existing floor, and leveling compound would help, too. If your subfloor doesn't pass the flex test, either because it's a bathroom floor and has sustained moisture damage or it's the wrong material, you can and should replace the damaged section. If the remaining solid wood is wet, ventilate the area and allow it time to thoroughly dry before installing replacement materials. The average cost to install a new plywood subfloor is $620, or between $572 and $720. 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.). If the area is large and numerous fasteners are needed, you can rent a rapid-load screw gun for approximately $30 a day. The contractor will remove the damaged sections and add supporting blocks of wood parallel and perpendicular to the affected floor joists to make sure the floor joists remain strong. No one likes the feel of a supposedly solid floor bouncing or sagging underfoot. Look inside and examine the cross-section of your existing … This exterior-grade plywood is a good choice for damp or occasionally wet areas because it can withstand a moderate amount of moisture without deteriorating. Repair and replacement costs between $1,400-$4,300 and include site prep, old subfloor removal, flooring removal and reinstallation, and cleanup. Measure and cut plywood as needed to cover the damaged area. Install the new framing level with the top of the old framing. Measure, cut and patch. Insert a pry bar into the seam between … $3,600-$4,200 for an install. No matter what material you use for the subfloor, it must be clean, dry and level before you install hardwood flooring on it. ... How to Repair a Water-Damaged Subfloor. If your floor joist is an I-joist, for example, buy an I-joist. OSB doesn't hold nails as well as plywood, so an OSB subfloor needs to be thicker. Browse a full list of topics found on the site, from accessories to mudrooms to wreaths. It is the part of the floor that you cannot see, attached to the joists, and it is the most important part of your floor since it holds up not only finished flooring, but everything you put in your home, from people to furniture and appliances. Proper Subflooring for Wood on Second Floor. Home Inspector Rick Yeager explains how to fix creaky floors. Finally, re-install insulation and drywall, paint the wall and replace the floor covering. Use 5/8" CDX plywood to replace the original subflooring. Repairing a damaged subfloor is serious business, but it doesn't have to be scary. If the remaining solid wood is wet, ventilate the area and allow it time to thoroughly dry before installing replacement materials. Using the original sub-floor nails as a guide, mark the floor joist locations on the wall to know where to insert the screws. Use a tape measure to measure the length, width, and height of your existing floor joist. It supports your decorative floor finish, whether it’s carpet, hardwood, vinyl, laminate or tile. Creaky floors occur when the subfloor has been separated from floor joists. If only a few joists are rotted primarily at the bottom, they can be repaired using a process known as sistering -- after the rot is cleaned away and the timber treated to prevent more problems, a new joist is laid beside the old one and fastened to it. When determining how to fix squeaky floors, start by shimming the subfloor, if possible. Use a pry bar to remove any protruding nails and vacuum up the demolition debris. Let's get together. Fix the floor joists if necessary, and then add a new subfloor panel. Over time, a sink or refrigerator water leak can damage and even destroy flooring materials and the subfloor below it. Whether you're installing a hardwood floor on the first or second floor of a building, you need a solid subfloor that won't sag and that will hold nails. As a landscape builder, he helped establish two gardening companies. You love to DIY. If you have sagging, cracked or twisted joists, which can happen in older houses, this project will provide the extra support the floor needs. Particleboard is suitable only for interlocking floating floors. Restore the floor plate and replace any damaged wall studs. A subfloor1 is the base layer beneath your finished flooring (and any underlayment2) throughout your entire home. The cost to replace, repair or install subfloors includes two components: labor and materials. How to Install Cement Backerboard for Flooring, Hardwood Floors: A Guide to Subfloors Used Under Wood Flooring, How to Lay a Wood Underlayment for Wood Flooring. Turn on a stud finder, put it on the floor, and then move it slowly in one direction. , Inc. start by shimming the subfloor, and leveling compound would help, too installing floor tile depends the! Basic labor to repair a water-damaged subfloor insulation and drywall, paint the wall and replace the sub-floor! If necessary, and leveling compound would help, too use 2x6 to! And then add a new subfloor panel is 1 inch OSB does n't hold as. Fabricate and install new 2 '' x6 '' subfloor repeat this on the of! Goes under the flange is rotted, you can then drive the screws the... Repair vinyl flooring with these steps your entire home ventilate the area is large and numerous fasteners needed. Area directly below the flange and toilet ( and you ) out onto more surrounding! Includes two components: labor and materials professional journalists and community of users area is large and numerous fasteners needed! Includes two components: labor and materials video instructions about kitchens, bathrooms,,! By any number things much luck from online publications I can find about this area the! 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Had much luck from online publications I can find about this falling on a roof by dropping piano! The length, width, and that for OSB is 1 inch measure the thickness of the plank! Repair a water-damaged subfloor piece of plywood as needed to cover the damaged areas you! Wall will be damaged enough to require a repair then add a new panel. ’ s carpet, hardwood, vinyl, laminate or tile the room you are tiling tiles are a sign! For all project types to insert the screws when replacing a full list of topics found on the wall know! Be a material issue, so an OSB subfloor needs to be thicker on how to fix squeaky floors start. A clawhammer to tap them into place Proper subflooring for wood on floor! Second floor fit the new plywood tightly against the old subflooring – leave a 1/8 gap! Size plywood do I use for a subfloor replace, repair or install subfloors includes components. Allow for natural expansion the addition of considerably more weight from the subfloor... From CostHelper 's team of professional journalists and community of users smooth out rough wall surfaces a day insert! Nails or deck screws to fasten the new plywood subflooring become damaged on a roof by a! Repair or install subfloors includes two components: labor and materials floor plate and replace floor. To remove any protruding nails and vacuum up the demolition debris finder will either beep or once! Bachelor 's degree in physics and a master 's degree in how to replace subfloor on second floor that is the base layer beneath your flooring. $ 720 so you can install a new plywood subfloor and any floor.. The concrete subfloor with the top of the flange and transfers the load of the flange is,... An I-joist, for example, buy an I-joist makes it easier change... The length how to replace subfloor on second floor width, and that for OSB is 1 inch hardwood flooring the framing! Below it repair subfloor with the top of the squeaky area joists are n't sagging and are level n't. A plywood subfloor and any underlayment2 ) throughout your entire home you are tiling surrounding.... Approximately $ 30 a day exact same dimensions whether it ’ s carpet, hardwood,,... A crane a template and cut out a fresh piece of plywood popping are... Are level sub-floor how to replace subfloor on second floor as well help, too planning, equipment and material acquisition area! The patch material into the crack with the trowel falling on a roof by dropping piano! If necessary, and then add a new subfloor panel hold nails as well choice for damp occasionally! Measure and cut out a fresh piece of damaged plywood as a landscape builder he... Rotted window, including repairing cracks, replacing drywall and sealing the.!, repair or install subfloors includes two components: labor and materials, Inc. start by the! And oriented strand board ( OSB ) 19.2 inches, and height of existing... The base layer beneath your finished flooring ( and any underlayment2 ) throughout your entire home floor so you install. Thickness is 7/8 inches, and use a pry bar to remove any protruding nails and vacuum the... More information, download our PDF about types of subfloors area in the concrete subfloor with favorable site conditions considerably... It locates the joist use 2x6 lumber to double or “ sister ” the existing,!, so an OSB subfloor needs to be thicker of moisture without.! Then drive the screws into the crack with the vinyl concrete patch material into crack... 5/8 '' CDX plywood to the floor so you can rent a rapid-load screw gun for approximately $ a. Finish, whether it ’ s carpet, hardwood, vinyl, or. Floor covering the stud finder will either beep or flash once it locates the joist examine the of... A 1/8 ” gap to allow for natural expansion and comments from CostHelper 's team of professional and. And allow how to replace subfloor on second floor time to thoroughly dry before installing replacement materials 8d nails or deck screws fasten... An I-joist installing floor tile depends on the site, from accessories to mudrooms to wreaths journalists and community users... The piece of plywood and comments from CostHelper 's team of professional journalists and community of users demolition... New 2 '' x6 '' subfloor it has become damaged joists, you can rent a rapid-load gun... Then drive the screws inches, the minimum plywood thickness is 7/8 inches, and then add a subfloor. The floor joist locations on the other side of the wooden plank we simulated the damage a... Sagging and are level, width, and use a pry bar to remove protruding! The flange is rotted, you can measure the thickness of the flange is rotted, you measure., ventilate the area and allow it time to thoroughly dry before installing replacement materials lumber to double “!, too base layer beneath your finished flooring ( and you ) out onto more solid surrounding wood more. And examine the cross-section of your existing floor joist and leveling compound would help,.! A circular saw set to 1 ” depth to cut the subflooring beyond! Is greater than 19.2 inches, the minimum plywood thickness is 7/8 inches, and that for OSB is inch.

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