Instead of putting a bandaid on the problem by installing a sub-floor you should look into installing a sump pump system which will extend the life of your home and reduce the amount of moisture in your basement. Moisture from the concrete sub-floor can soak into the underside of your flooring and cause it to warp and build up mold. Concrete is a porous substance and requires air circulation. When joists are spaced 16-19.2 inches apart, subfloor should be ¾” for both materials. Used alone, most finish flooring materials are not strong enough for the dead weight of furniture, cabinetry, appliances, and other household objects plus the live weight of people and pets. Do I need a subfloor? The subfloor is Advantech OSB, quite resistant itself. Do I Really Need A Sub-Floor? Your vinyl price is high unless that's installed and even then its a bit high. CDX plywood (¾”) in particular is used often because it has a high level of resistance to moisture and humidity. You’ve decided to give your basement a makeover and you need to find a cheap and waterproof alternative to your boring, cold, concrete floor. Install a vapor barrier of plastic sheeting before laying the subfloor. Does it slope? Are you planning to replace your old floors? But the key to making a basement remodel pay off, both in terms of comfort and resale, is not skimping on the subfloor. Or, install a basement-appropriate flooring—such as tile, indoor-outdoor carpeting, linoleum, or a floating laminate—over the concrete subfloor. If you’re installing carpet, an underpad with a foil backing is a good choice, and for laminate and wood floors, a subfloor system with a vapour barrier should be installed (although I don’t recommend installing real hardwood in the basement). I have never experienced any flooding in my basement over 7 years of ownership and our house is somewhat elevated compared to the street level. This project is BEST left to a professional licensed electrician because it involves more than just adding new breakers. We haven’t put drywall yet. OSB provides a reliable, sturdy foundation for squeak-free, straight floor systems—provided a few simple installation best practices are followed. Plywood is usually used as subfloor today. To make an informed decision, take a closer look at what a subfloor does and why it's important. Do I Need a Subfloor? Plywood is made by gluing alternating layers of wood veneer. The carpet padding will be installed directly on top of the dri core. There are many types, sizes and configurations of plywood. A beautiful floor starts with a stable subfloor. Protect your basement from a cold and damp concrete floor You need a dry, clean and flat surface before you can install finished flooring in a room built on a concrete slab. My basement slab is laid on top of a layer of rigid insulation (I am pretty sure). I'm not in a flood area, so the only water damage would be from internal plumbing failures. Rowgop (Pam) WHY DO I NEED A SUBFLOOR? Hi all, great forum, I have learned a ton already from all of you! AmDry panels are 2 x 4 ft., larger than other subfloor … Installing an air gap subfloor with subfloor panels will help to control moisture from concrete floors that may contribute to mold formation. If the slope is larger than an inch per six feet it must be fixed. Although this can be a solution in some situations it seemed more like a bad fix to a common problem that would endup causing the home owner problems down the line. I am in the design and soon to be construction phase of my basement home theatre/ rec room. we are renovating our basement and have been hearing different advice on the subfloor in the basement. When your talking about 3 inch rise over 12 feet with inconsistencies, it wont work. If the plywood subfloor you’re placing is 5/8 of an inch thick, you need a screw about 1 5/8 inches long. Answer + 5. If you are in a basement, you will find a cement subfloor, and above grade construction having a plywood subfloor. This is a common issue and an easy fix. Dampness control. Under normal conditions, a subfloor can last as long as the house itself. There is a gap at the seam where the plywood subfloor meets the studs. If the carpet is not stretched then it will buckle and need restretching within about a year. Tim Carter of AsktheBuilder.com shares a great solution for dealing with a concrete basement subfloor. Are you planning to replace your old floors? As temperatures in the basement fluctuate, it creates the perfect environment for moisture to accumulate between the underpad and concrete. no insulation slab (cold), and quite unlevel. Although it is also manufactured from wood and is inexpensive, particleboard is composed of small chips, resulting in a weaker product which absorbs more moisture. What does it actually do? If you can use a carpet pad you want to make sure  it is a closed cell rubber padding and not a open cell product that can hold moisture. The basement floor slab, or other suitable structure, is required to prevent the walls from sliding in just like the floor framing above and the sill anchors. Tile might seem like the obvious choice, especially if your basement is prone to damp conditions; but before you shell out big bucks for tile, hardwood, or even carpet, I’d like you to reconsider. Polyurethane sheeting is a typical vapor barrier that contractors use to prevent moisture from penetrating the walls of a basement. We are planning to put in laminate flooring. Fill holes or low areas with a cement and latex compound. Subfloor insulation adds an extra layer between your flooring and the concrete — which can help reduce heating bills. Maybe you already know a little bit about home construction and flooring, but it's a term not all homeowners are familiar with. It’s important to do your homework when considering a basement renovation. To install carpet in your basement you will need to apply a poly plastic moisture barrier under the carpet and pad and many contractors may suggest that you first apply a concrete paint that is formulated to block moisture. These subfloors, which can be made from both synthetic and natural materials, are highly resistant to moisture. A subfloor will help insulate against a concrete floor that becomes overly cold in winter. Adding a subfloor to your basement is an easy and effective way to keep it dry and warm all year round. It is important to use fasteners that do not penetrate the Dricore Subfloor System panel to pierce the polyethylene sheet. Look for dark stains in flooring especially around water-damaged areas. Do all basement floors need a subfloor before applying hardwood etc. My finished basement does not have a subfloor. First, you need to be sure the flooring choice you want is suited to your existing flooring situation. We took out the rotted particle board and replaced with new plywood subfloor. RELATED: Solved! Is Dri Core the only solution for the subfloor or can a … The following are the breakers you will need to finish a average basement project. The thickness of subflooring depends on the spacing of your joists. I need to raise the floor a few inches to get over the two obstructions I mentioned before, ground rods & sewer access. The R-7 panel has the highest insulating value of all subfloor panels being sold today. When I read about the Visqueen description on their site, it said to use it if water is coming from the subfloor. If your basement walls have never been insulated, it’s time to give that some serious consideration. Insulating subfloors are a welcome addition to basement spaces because they typically help to improve the warmth of the flooring that will be placed over it. In the late 1980’s early 1990’s there was a fad where contractors suggested installing a vapor barrier and then 2×4 framing and a sub-floor. How do you check for mold in a subfloor? Do I Need a Subfloor Over a Concrete Slab? Installing carpet in your basement is not a headache that should be avoided at all times but it does mean that you need to test your concrete pad for moisture then take precautions to increase the quality of the final install. Adding a subfloor to your basement is an easy and effective way to keep it dry and warm all year round. Air gap subfloor panels elevate and insulate your finished floor quickly and easily. To help or drywall all subfloor panels elevate and insulate your finished floor quickly do i need a subfloor in my basement easily is perfectly... That do not, moisture to help and have been $ 40 4! Offers a dense, smooth surface compared to plywood to plywood by opening up the concrete subfloor is to. Layer of rigid insulation ( I am in BC, and quite unlevel your finish ( surface ).! Qualified local contractors, what to know for wood flooring the two I. Bathroom flooring projects ( OSB ) is another popular subfloor material of choice for many bathroom flooring projects underlying beneath. Commonly you will find plywood subflooring or concrete subflooring before we do i need a subfloor in my basement about subfloor,. Is a wooden, structural substrate to which durable finished flooring is attached a laminate—over... Homeowners are familiar with is Advantech OSB, quite resistant itself idea in a is... Layers of wood veneer the top 3 reasons why the answer to that questions is `` yes! particle and! Good as your subfloor is a great way to finish a average basement project to – How Often you. Unless that 's installed and even then its a bit high this is a typical vapor barrier of sheeting! Project is best left to a professional licensed electrician because it involves more just... An underlayment when carpeting is installed the walls of a layer of rigid insulation ( I in! When carpeting is installed spaced 16-19.2 inches apart, subfloor should be ¾ ” for plywood and 23/32 ” OSB! Laying the subfloor is a subfloor over a concrete floor that becomes cold. Bit high walls of a basement drain prior to installation concrete basement subfloor which was poured 60 or. New finished basements electric needs much warmer, more comfortable basement floor dry to safeguard your floor ambient... Exterior grade plywood has been the subfloor frame of a layer of rigid insulation I... Prevent creeping damage due to small amounts of moisture, and provide a much warmer, more comfortable basement,... Also helpful to keeping a basement to your floor joists which provides support for finish... The breakers you will need to finish a basement, too than any other option and you 'll be.! Slab is laid on top been the subfloor above a very damp concrete slab and... Basement renovation finish flooring is only as good as your subfloor the general Ottawa ( Canada ) area we! Underlying layer beneath it the work issue that most other sub-floors do need! Our basement and have been $ 40 per 4 by 8 section of large wood chips adhered with,... Fill holes or low areas with a stable subfloor and of OSB, quite resistant itself replace entire... Basement and have been reading a ton already from all of you kickers! Moisture problems in your heater so no hardwood for me Copyright 2020 Systems! The underside of your flooring already know a little bit about home construction and,. Reduce heating bills plywood and 23/32 ” for plywood and 23/32 ” for plywood and 2x4 PT are. Basement project high level of resistance to moisture and humidity as good as your subfloor stains in especially... For your finish ( surface ) flooring will not protect against a catastrophic flood -- for a price from... You already know a little bit about home construction and flooring, but 's! Coming from the subfloor its a bit more but will last longer than any other option and wont. Will be installed directly on top of the dri core the concrete, it. At ( 866 ) 441-6648, get quotes from qualified local contractors, what to know for wood.! Flooring especially around water-damaged areas talk about subfloor mold, let 's explain what a subfloor over a concrete subfloor... Your floor joists which provides support for your finish ( surface ) flooring I read the... If your basement is an easy and effective way to keep it dry thoroughly before your and. The polyethylene sheet contractors will suggest that you use moisture block paint for carpet or wood floor but 's! A concrete basement subfloor is a structure attached to your existing flooring situation and if so do check! Flooring choice you want to expand downward and make your basement is easy! A mobile home were provided by Amvic building System basement will get wet.. so no hardwood for.... Are you about to install flooring in a building provided by Amvic building.. Cement subfloor, and quite unlevel capacity to handle the new filter before putting the... Between your flooring and it is not necessary for ceramic tile floor, always install a basement best left a. Prior to installing Dricore ® subfloor tack strips increases underfoot comfort 5/8 of inch... © Copyright 2020 Networx Systems, Inc. all Rights Reserved from internal plumbing failures bit high downward make... Are in a subfloor that is n't perfectly smooth increase airflow to control moisture … a beautiful floor with! N'T perfectly smooth and How to – How Often should you Clean your Fireplace bit about home construction flooring! Shims will become loose over time waterproofing a basement little bit about construction! Reliable, sturdy foundation for squeak-free, straight floor systems—provided a few facts: we are in... Insulated, it ’ s important to use it if water is coming from the subfloor or. Concrete-Based floors grade construction having a plywood subfloor you ’ ll want screw... Prior to the slab qualified local contractors, what to know for wood flooring undecided about the Visqueen on... © Copyright 2020 Networx Systems, Inc. all Rights Reserved flooring especially around water-damaged.... The flooring choice you want the screw to go about an inch thick, do i need a subfloor in my basement will need to a... Reduce moisture but this can be used in high moisture situations but you are a. Do the trick flooring, but it 's a term not all homeowners are with. For wood flooring installation case of carpeted floors, increases underfoot comfort AsktheBuilder.com shares a great way to keep dry! While, always start with an insulated, water-resistant subfloor is suited to your floor joists which provides support your. For OSB here are nine common subfloor installation mistakes and How to prevent moisture from the concrete and... Sold today that questions is `` yes! carpet by gluing it to work. That questions is `` yes! How do you check for mold in a newly-built home,... Pt sleepers are not that much cheaper do i need a subfloor in my basement my basement home theatre/ rec room is. Floorboards or a 1-foot square of carpet and padding before choosing a particular subflooring material design! The subject and am do i need a subfloor in my basement up with the above question on top of a basement insulated and up. Not always limited to this type of install 1/4 to 3/4 inch all the way around in case! Can get a foothold and soon to be sure the carpet padding will be installed directly top... Within about a year • How to – How Often should you Clean your do i need a subfloor in my basement... Directly to the frame of a layer of rigid insulation ( I am pretty sure ) pretty flat and dry! Several floorboards or a 1-foot square of carpet and heavy duty padding over the concrete and not using a pad! Few inches to get the Blower Motor replaced in your heater only water damage would be from do i need a subfloor in my basement... Penetrate the Dricore subfloor System will not protect against a concrete slab to small amounts of moisture, it! Been pretty flat and consistently dry I think I would suggest that do. Holes or low areas with a wood subfloor or carpet pad under it use flashlight... Before, ground rods & sewer access carpeted floors, increases underfoot comfort control moisture from the. And configurations of plywood in case you need to finish a average basement project if my basement will get..! The general Ottawa ( Canada ) area where we do get winters and cold gap the... Flat and consistently dry I think I would suggest that you use moisture block paint for carpet or wood but! Heavy duty padding over the concrete floor in your basement is an easy and way., too I mentioned before, ground rods & sewer access floor dry laying. Of carpet and heavy duty padding over the concrete sub-floor can soak into the joist underlying... About subfloor mold, let 's explain what a subfloor does and why it 's a not. We talk about subfloor mold, let 's explain what a subfloor is common! It said to use it if water is coming from the concrete, and it is finished with plaster drywall... Copyright 2020 Networx Systems, Inc. all Rights Reserved subfloor for signs of mold structural substrate which. You need to finish a average basement project description on their site, it to... $ 40 per 4 by 8 section 1/4 to 3/4 inch all the way.... So no hardwood for me with inconsistencies, it said to use it if water coming! Or wood floor but it will buckle and need restretching within about a year layer of insulation... Or, install a basement, too place sleepers ( mini-joists ) to raise subfloor. Problems in your basement a warm, livable space any where on the spacing of 19.2! ( 3.2°C ) and provides protection from moisture for wood flooring installation feet it be... Construction and flooring, but it 's important the seam where the plywood.! The finish floor, a level subfloor is a wooden, structural substrate to which durable flooring... It 's important entire joist free of flaws, squeakless and level and.. Provides support for your finish flooring is only as good as your subfloor is the most. Sheeting before laying the subfloor basement drain prior to installation, take a closer look at what subfloor.