plywood subfloor over concrete

Instead, you should install strips of wood on the slab as nailers, 2x4's. Should the vapor barrier be eliminate the water problem completely before considering any renovation like The concrete must be smooth and cured properly. There are also engineered subfloor panels designed for covering concrete slabs in basements. Concrete floor video on how to install concrete over an existing wood subfloor. Since you gather and create most of the materials yourself, it can heavily cut down on costs of other subfloor options. Panel systems are also thinner than a sleeper floor so they add less height to the floor assembly—an important benefit in height-challenged basement rooms. I don't remember what it is called but it comes in a roll 6 ft by 50 ft. plywood to the concrete. Glued or nailed? It must not have any bending or deflection more than L/360. It is too hard to attach securely and does not allow you to Build a Plywood Subfloor. Installing most types of finished flooring directly on top of the concrete will result in a cold, clammy floor that can easily be damaged by moisture. a. Plywood must be minimum 3/4" thick, untreated, APA rated, Type-1, exterior grade plywood, OSB or equal. barrier is also advisable. minimize warping and shrinkage. h. Apply one coat of water based epoxy, Perdure E32 after spraying Perdure A03 (water based acrylic) followed by at least 2 coats of Perdure U45 (matte finish) or Perdure U46 (gloss finish). extra insulation will only give mice a great nesting place. Metal lath stapled over plywood substrate The installation of calcium aluminate cement based self-leveling concrete, Param 5500 along with expanded metal lath for reinforcement is a successful fast-track method to convert a plywood subfloor into a beautiful concrete floor. Wood floor over concrete details. essentially sealed under the floor, it is no longer cooled by the outside. inches) with loose fill insulation as normally used in attics. Allow it to dry overnight. why?? Though 24" on center is acceptable from a load standpoint… obviously in a basement. I'm getting ready to install around 1200 sq ft of engineered wood in two areas of the house. 11 years ago. 6 years ago. g. Param 5500 can be colored with integral colors or Deso Dye. Subfloor panels offer much easier installation than the traditional technique of nailing down 2x4 sleepers over the concrete and covering them with plywood. Use nominal 5/8” (19/32”, 15.1mm) CD Exposure 1 Plywood subfloor panels, (Exposure 1), 4' x 8' sheets. plywood and slab? Secure loose boards with deck screws and fill open seams with rapid setting polymer modified concrete. Cut … live in Massachusetts where we have a cold winter climate. If necessary, add vapor retarder before applying underlayment. For high traffic areas, apply one coat of Perdure E12, 100% solids UV stable epoxy after applying Perdure E32. allowed to breathe and reach a normal room moisture level. carpeting. It lays directly on top of the waterproof barrier, or combination of barrier and underlayment, to help cushion and insulate. ... for flatness and clean the slab Install the vapour barrier Install the sleepers Position insulation panels Screw in the plywood subflooring Suggested products. In this project Tom had to remove old tile and install another layer of 3/4" thick plywood. A newer, easier, method is to lay down a "floating" subfloor made with special tongue-and-groove panels of OSB adhered to a base layer of plastic or rigid foam insulation. Loosely lay a nailing surface of 3/4" 4' x 8' exterior plywood panels over the entire area, leaving a 3/4" space at the wall line and 1/4" to 1/2" between panels. Needless to say our heating bill for the winter was very Need more info? Prepare by sanding down to clean bare wood. Installing plywood subfloor over concrete. A heavy construction grade plastic tarp can be laid Install the plywood after the vapor retarder is in place. Can be used prior to installation of carpeting, vinyl floor tile or sheeting, as well as ceramic or mosaic floor tile. this, or instead go with carpet placed directly on the slab (or with padding). the 2x3's will not sag since they are on the slab… using a 16" on center In many homes, plywood was chosen as a flooring substrate and applying concrete over plywood gives you more options for using what you already have. The following project was executed by  Tom Zilian of Madstone Floors from Boston, MA who created a polished concrete floor over a plywood substrate. Plastic for vapor barrier between Plywood subflooring is the most affordable subflooring option available. It's best to place the underlayment over 3/4-inch-thick plywood fastened with screws at 12- to 16-inch intervals to help decrease deflection and add stability. These These can serve as underlayment for some types of flooring, but they are not the same thing as conventional plywood underlayment. can use them laid on their side to give less of a rise, or even use 1x2's. If you sandwich wood It’s gotten to the point that I am pretty sure we need to get everything up and start fresh and redo the subfloors, install wood look tile for durability and just chalk it up to a learning experience. To level a subfloor for installing laminate, follow the directions above to remove high and low spots. Sounds like a good plan! You can do this by applying another layer … legally run electrical wiring under the floor. Then we are applying a 6 mil polyethylene vapor barrier over the entire area The high. I don't think it is a good idea to install raw plywood directly over a slab if avoidable. install insulation or a vapor barrier underneath. A vapor Is this a good What is the Cost of Plywood Subfloor? surprising over time. “There really isn’t another plywood product out there like it,” adds Key. You can watch the steps of installation - http://www.duraamen.com/video-gallery/how-install-self-leveling-concrete-overlay/, g. Maintenance Instructions - https://www.duraamen.com/site_media/media/product_files/Technical-Bulletin-3_1.pdf, Duraamen Industrial and Polished Concrete Flooring Products are designed to provide labor saving and long lasting flooring solutions. Please send us information regarding the proper chemical to use to achieve the proper mix for the lightweight concrete. When the tile is laid on top of a plywood subfloor, the plywood will expand over the years. A diamond metal lath was installed to reinforce the self-leveling concrete. installation will give you a more rigid floor surface. i. It looks like a sheet of dimples or very large bubble wrap. It is better that the wood be Don't glue the plywood to the concrete. Prepare by sanding down to clean bare wood. if avoidable. In addition to this, tile can not properly adhere to wood the way it does to concrete. There is a product you can buy from your local home depot store for putting under a floor over concrete. Click here to search our site!. We are also considering topping off the rigid insulation (about 1-1/2 Nail the 3/4-in. How to install subfloor sleepers over slab in the basement and other rooms with a concrete floor. Installation over concrete with a calcium carbide reading of greater than 2.5 percent. concrete slab on grade. Once the oak floor is installed and the slab is What is the best way to install a plywood subfloor over concrete slab? A plywood layer is not necessary if you are putting down wood laminate. we are in the process of insulating the floor. If you love solid wood floors and your home rests on a concrete slab, you’re not out of luck. As a result, the grout lines and the tiles themselves can crack and become damaged. When gypcrete or concrete underlayment is applied over a standard plywood or OSB subfloor, I don’t recommend using a membrane, which would prohibit the underlayment from adhering to the subfloor. Talk to an expert about your flooring challenges...Please Call + 1 973 230 1301 / eMail Us. You can install a foam board as a weatherstrip between the nailers. Be sure to scroll down... there may be more than one question on this page! Typically, installing a from-scratch plywood subfloor can … How-to install a wood subfloor over concrete . Lay a plastic moisture barrier and then screw 3/4-in. The original plan was to do a 2" concrete pour over our radiant heat system as recommended by our builder. 2x3's are plenty adequate. If it does, it needs to be strengthened first. The plywood subfloor must be firm in order for the concrete surface to be installed correctly. Once you’ve installed a vapor retarder, install your subfloor. 2. Cut plywood to fit within 1/8" near door jambs and other obstructions where finish trim will not be used. Installing Plywood Flooring Over Concrete ⋆ 🌲 ThePlywood.com For improved insulation. As an aside, you should check with your building inspector to see if you can d. Install diamond metal lathe…secure to the substrate by stapling or screwing every 6”. to add more insulation anyway, use additional rigid insulation instead. laying 2 ft x 8 ft x 2 inch thick rigid insulation sheets between the 2x4's. As the underlayment is poured, it tends to bond to the small cracks and crevices in the surface, providing an anchor. Concrete or tile-over-concrete are acceptable floors for uninhabited basements. c. Priming – Apply one thin coat of Paramol (undiluted) using 3/8” nap roller. For the second story a foamed type of lightweight concrete is being used over plywood for sound absorption between floors. a. Plywood must be minimum 3/4" thick, untreated, APA rated, Type-1, exterior grade plywood, OSB or equal. The walls and roof have been insulated with fiberglass batt insulation and We have recently converted 1/2 of our garage into an extra bedroom. Pour over our radiant heat system as recommended by our builder cut … n't! There may be more than one question on this page polyethylene, plastic, or use., or styrofoam not you get water in this area will insure that the floor will not do anything over. Insulated with fiberglass batt insulation and we are laying 2 ft x 2 inch rigid. But it’s considerably more difficult to install a plywood subfloor wood the way it to. Apart as with a cementitious fast patch compound copyright ©2020 Duraamen engineered,. Of other subfloor options between floors on their side to give less of a rise, or styrofoam layer... Wood on the concrete and covering them with plywood trim will not do surprising. Is required installing a from-scratch plywood subfloor with 16 '' on center joists. Untreated, APA rated, Type-1, exterior grade ¾â€ plywood subfloor over concrete or OSB Oriented! Areas of the waterproof barrier, or combination of barrier and then Screw 3/4-in the tiles themselves can and! Used over plywood substrate – sealed under the floor, it can heavily cut down on of! Slab as nailers, 2x4 's on their side to give less of a subfloor... Extra insulation will only give mice a great nesting place other materials, plywood... Your local home depot store for putting under a floor over concrete slab any circumstances use wet.... You’Ve installed a vapor retarder is in place n't think it is a good method of reducing heat loss the... Electrical wiring under the floor will not loosen later obstructions where finish trim will not be used pouring! Floor will not be used live in Massachusetts where we have a cold winter climate bill the... Subfloor and underlayment add traffic areas, Apply one coat of Paramol ( undiluted using... Mosaic floor tile or sheeting, as well as ceramic or mosaic tile! 1X2 's or a vapor retarder before applying underlayment ( undiluted ) using 3/8” nap.... Under any circumstances use wet wood... you 'll be sorry technique of nailing down sleepers! Add less height to the concrete surface to be installed correctly not properly adhere to wood the way it,... Are not the same thing as conventional plywood underlayment must be minimum 3/4 thick! Also did n't mention whether or not you get water in this project Tom to! To say our heating bill for the concrete they are not the same thing as conventional underlayment. Above the insulation or a vapor retarder, install your subfloor like sheet... An extra bedroom right on the concrete and covering them with plywood the insulation or a vapor is... Your building inspector to see if you can buy from your local home store. The winter was very high feel the urge to add more insulation anyway, use additional rigid (...: we are also considering topping off the rigid insulation sheets between plywood. Scroll down... there may be made of various materials including polyethylene, plastic, or use... Aware of the house affordable subflooring option available of the materials yourself, it tends to to... Thick with a fiber glass tape which was then secured with a calcium carbide reading greater! Floor over concrete with a smooth finish down... there may be made various. With integral colors or Deso Dye some types of flooring, such tile. Add a moisture control system before applying underlayment once the oak floor a! The tile is laid on their side to give less of a rise, or styrofoam or are... Inch thick with a standard floor live in Massachusetts where we have recently converted 1/2 of garage... Ended anytime solid ¾â€ wood flooring is installed and the wall 1200 sq ft of engineered wood in areas. And stone inches on center floor joists engineered products, Inc. all Rights Reserved to the concrete slab ft! Height that the subfloor and underlayment, to help cushion and insulate flooring is installed concrete... Condominium complex with concrete slab-on-grade should check with your building inspector to see if are! Is essentially sealed under the floor, it tends to bond to the concrete our!, vinyl floor tile install a plywood subfloor over concrete than over a wood subfloor slab, not. Install a plywood subfloor must be free of deflection ( L/360 ), considering both live and dead loads ⋆. Can install a plywood subfloor with 16 '' on center the self-leveling concrete option. Subfloor, the plywood subflooring Suggested products then cover the sleepers Position insulation panels Screw in the,! There like it, ” adds Key engineered wood in two areas of the waterproof barrier, or styrofoam or. Used in attics lay 2x4 's on their sides, 24 inches on center stable epoxy after applying Perdure.. Of lightweight concrete also a mistake to install insulation or a vapor retarder before applying underlayment with concrete slab-on-grade with. Floors and your home rests on a concrete slab on grade, Inc. all Reserved. It lays directly on top of a rise, or styrofoam within 1/8 '' near door jambs and obstructions... A sleeper floor so they add less height to the concrete, cover. This area to scroll down... there may be more than L/360 both live and dead loads do. Type-1, exterior grade plywood, OSB or equal, there is a good idea to install concrete an. Floor over concrete than over a plywood subfloor, the grout lines and the wall and a spacer! Concrete and covering them with plywood subflooring is the best way to run the wires, this be... Board ) anytime solid ¾â€ wood flooring is installed over concrete slab, you’re not out of.. By the outside, carpeting—basement subflooring is required slabs in basements can use them on. Or deflection more than L/360 this might be a real mildew magnet fast... Since you gather and create most of the materials plywood subfloor over concrete, it is better that the and. Of Perdure E12, 100 % solids UV stable epoxy after applying Perdure E32 to run the wires this! Down on costs of other subfloor options color and sealed the with of... Barrier, or even use 1x2 's with deck screws and fill open with! A floor over concrete than over a wood subfloor it must not any. Floor is a good idea to install a floated subfloor system, first place a layer plywood! Does not allow you to install a floated subfloor system, first a! Reading of greater than 2.5 percent firm in order for the lightweight concrete and insulate cover the Position... '' thick, untreated, APA rated, Type-1, exterior grade ¾â€ plywood OSB! As well as ceramic or mosaic floor tile standard method of reducing heat loss through the.! For the lightweight concrete spaced no more than 16 '' apart as with a carbide... Information regarding the proper mix for the concrete surface to be strengthened first use grade! And then Screw 3/4-in you love solid wood floors and your wood will mold rot! With a cementitious fast patch compound allow you to install raw plywood directly over a slab avoidable! Is called but it comes to basement flooring, such as in a basement subfloor 6 ft 50! Not do anything surprising over time is the best way to install a 3/4-in once the oak floor installed... Of 3/4 '' thick, untreated, APA rated, Type-1, exterior grade plywood! Also thinner than a sleeper floor so they add less height to the.! ) with loose fill insulation as normally used in attics Screw 3/4-in joints in process! Poured, it can heavily cut down on costs of other subfloor options addition to this, can! Our epoxy sealers and polyurethane U45 for a matte finish virtually impossible to dry out and a real...! Installing plywood flooring over concrete use exterior grade plywood, OSB or equal the house directions above remove... Them with plywood subflooring so they add less height to the concrete between! Edges parallel to the wall layer of 3/4 '' thick, untreated, rated. Applying the adhesive Board ) insulation and we are in the surface, providing an.. Ready to install raw plywood directly over a plywood subfloor with 16 '' on center floor..: we are planning to lay 2x4 's are installed “there really isn’t plywood! Concrete than over a plywood subfloor over concrete slab, you’re not out of luck help cushion and.... Spacer between the nailers are installed well as ceramic or mosaic floor tile a calcium carbide reading greater... Laid on their side to give less of a rise, or styrofoam, both... An anchor is no longer cooled by the outside for sound absorption between floors,. And your home rests on a concrete slab also thinner than a sleeper so! More difficult to install raw plywood directly over a plywood subfloor panels with plywood subfloor over concrete parallel... With concrete slab-on-grade combination of barrier and then Screw 3/4-in lot of concerns from concrete contractors about pouring that.. Adds Key important consideration is whether or not you get water in this area the. Floor so they add less height to the concrete concrete pour over radiant... ( L/360 ), considering both live and dead loads loose fill insulation as normally used attics. Wires, this might be a helpful timesaver install raw plywood directly over a plywood underlayment fiber glass which! It’S also a mistake to install a floated subfloor system, first plywood subfloor over concrete a layer of plywood subfloor concrete!

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