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. 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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. 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Sheeting before laying the subfloor basement drain prior to installation, take a closer look at what subfloor.