I assume i would need to level out the floor first, but a general contractor told me it would be very expensive to pour concrete in my basement and also suggested that a good subfloor could be built without levelling the concrete. For a successful selfleveling concrete installation, follow the seven tips in this article. Heres a little self leveled floor action they poured a self leveler over a wood subfloor and created the look of a monolithic concrete slab. Installing over concrete on new concrete subfloors, a minimum of 28 days curing is usually necessary before installing an underlayment. How to prep a wood surface for epoxy floor installation. Before pouring the self leveler there is some prep work required. Check your flooring manufacturers recommendations to ensure youre using a proper subfloor. While concrete is a strong construction material, it can still crack. Apply a primer to help the leveling material adhere to the concrete subfloor. Readytouse, latexbased product used to fill cracks, fastener or knot holes and level low areas in plywood subfloors or concrete surfaces. Astm f2471 19 standard practice for installation of. This video demonstrates the installation of selfleveling concrete over plywood substrates.
Answer answer generally speaking allowing the concrete to cure for 28 days allows it to achieve 90% cure and there is no significant shrinkage in the concrete after that in terms of installing ceramic tile over it. Should i put a membrane between the concrete topping over plywood subfloor im working in a condo right now that was built in 1989 with standard wood not pt with a 1. To help you start your installation project off right, here are a few tips for preparing your subfloor. These relatively rigid traffic surfaces do best when applied to similarly inflexible concrete substrates. Ardex liquid backerboard over wood subfloor to allow stained. Flattening osb subfloor for lvp the floor pro community. Surface repair options for concrete floors and subfloors. Assuming you are installing 2 inches of mortar, not concrete, over an existing concrete slab or wood sub floor, you can adhere the tile to it after curing it overnight. Vacuum, then clean the area with water and a wire brush. They also dry very quickly, so the final texture is limited to how the microtopping is applied over the. I dont think having concrete over particle boards is an option.
The subfloor should be solid and fixed securely to provide a rigid base. With careful preparation, you can successfully install an epoxy floor over a wood subfloor surface. You need to rely on the manufacturers data sheet recommendations for the thinset dry set mortar you are using to adhere to the concrete. Usg structural panels are highstrength, reinforced concrete panels for use in noncombustible construction. To prevent that movement from creating cracks in your grout and tile, once your concrete subfloor is clean, flat, and free of cracks larger than 18 inch, you will need to install a crack prevention membrane. Floortop stg is a standard trafficgrade, singlecomponent, shrinkagecompensated, selfleveling floor topping and underlayment that may be pumped or poured. How to install a wood subfloor over concrete olde wood ltd. How can i pour a concrete floor over a particle board subfloor.
Installing hardwood flooring over concrete howtos diy. Floated subfloor, alternate subfloor, gluedown sub floor and the naildown subfloor system. What is the 2inch layer of masonry under my bathroom tile. Even for ceramic tiles it is not advisible to put them on. It will eliminate the risk of your floor collapsing under its own weight.
At one time, a concrete floor was regarded as a very basic, utilitarian surface suited only for a basement slab, utility room or garage. Diy flooringplywood floorsdiy interior concrete floorsdiy polished concrete. The daily temperature and humidity changes cause the wood floors to move and. Poured gypsum floors achieve high compressive strengths in hours versus a typical 28day cure cycle for traditional cements. Temperature changes, heavy weights, and dropped objects can all damage your concrete floor by causing cracks and holes. You would have to have an engineer check your sub floor to make. Now make a set of floor joists that will rest on the concrete floor. Concrete over a plywood subfloor with 16 on center floor joists. You can either roll on a liquid latex membrane, or put down a peelandstick crack prevention mat over the entire concrete subfloor. Its best to place the underlayment over 34inchthick plywood fastened with screws at 12 to 16inch intervals to help decrease deflection and add stability. In this project tom had to remove old tile and install another layer of 34 thick plywood.
Protect the poured param 5500 from excessive heat or draft conditions during the curing process. That being said, obviously floor prep is critical to a good install but also to get the floor to last over the long haul. Concrete bonding adhesive eliminates the need to roughen up the surface for the new concrete to adhere. How to choose the right subfloor leveling techniques. Learn how to stain concrete flooring with acid stain for a beautiful floor on a budget.
In the photos above, tom zilian of madstone floors from boston, ma created an polished concrete floor over a plywood substrate. Jan 07, 2016 poured gypsum floors achieve high compressive strengths in hours versus a typical 28day cure cycle for traditional cements. The floor patch and leveler will remain flexible allowing the plywood subfloor to flex without cracking the filledin areas. Dry the floor with old towels and let it airdry completely. I used a scraper and lightly hammered any spots that sounded hollow underneath to loosen any weak pieces. Jun 18, 2005 instead of solid concrete, the typical concrete porch deck is a poured concrete slab on a wooden substrate. Learn how to install beautiful hardwood floors over a concrete slab. Floor joists resting on a cripple wall are covered by a subfloor of plywood or 1inch. While the bonding agent is still tacky, mix the concrete with water and. Selfleveling concrete can be used as an underlayment for tile, carpet, or other floor coverings.
To ensure that your floor does not suffer from a flooring failure, its essential to test the concrete subfloor for high moisture levels according to the. Mix a 10 percent solution of household chlorine bleach in warm water and mop the wood floor to kill and remove mold and mildew. See more ideas about plywood subfloor, concrete and concrete floors. Right now its a poured concrete floor, but its pretty uneven. Wood floors, depending on their age, type and construction, tend to move and flex, which is an undesirable condition for installation of typically epoxy and other resinous flooring systems. Find out how concrete floors are installed over a wood subfloor. Tap 14inch shims in between the edges of the floor and the wall to leave room for expansion image 3. How to put down flooring on a cracked concrete slab home. How to prepare a subfloor for tile installation the home. Find the exact height difference between the floor high point and the line around the room. Providing a faster, easier and more efficient way to build floors. Follow the steps below to prepare a wood subfloor surface correctly to install an epoxy floor.
Brush on a concrete bonding liquid, sold in bottles at home centers. To float is to apply a cement and sand mix similar to concrete but without rocks, gravel or coarse sand. Dec 20, 2017 this video shows you the process of applying epoxy over wood subfloor. Rip down some 2x4s that follow the contour of the floor. How to install concrete floors over plywood subfloors seattle. Dispelling common myths associated with poured gypsum floors. How to prepare a subfloor for vinyl flooring home guides. The most common method of installing radiant heat in wood framed construction is to staple the radiant heat tubing on top of a plywood or osb subfloor and pour gypsum concrete over the tubing at 112 thick measured from the subfloor. If youre going over an elevated wood subfloor that requires you to build thicker lifts, consider bringing in a structural engineer to make sure the floor will support the additional weight. Dips, bulges and cracks occur frequently as concrete cures and ages.
This floor has been floated, a very common and traditional method for preparing surfaces for tile. Second, if youre planning to install flooring over the slab, the concrete needs to be level if its going to function properly as a subfloor. Tape a 3footsquare piece of scrap vinyl to the concrete with duct tape, sealing the edges tight. How to install self leveling over a wood subfloor youtube. Is it possible to have a polished concrete floor over my wooden subfloor my kitchen is on the main floor of my home but there is a basement below it i would appreciate any help or. Frankly, stacey, the thought of a concrete over wood floor frightens me badly. Mix a 10 percent solution of household chlorine bleach. Subfloor for tile tomasloewy metallic epoxy over wood subfloor look for more ideas at polished concrete floor over wood subfloor flooring concrete over plywood floor furniture home accessories installing hardwood flooring over concrete how tos diy should i put a membrane between the concrete topping over. Should i put an anti fracture peel and stick membrane down on the wood then pour cement. The first thing you want to do when repairing large holes in concrete is to break out all of the. Radiant heat thermal mass benefits of gypsum concrete. Darn dangerous, had a very large aga go through a concrete floor,into a unknown cellar, concrete was barely 60mm, it had been laid over a timber floor.
Find out how concrete floors are installed over a wood sub floor. I did find one interesting and extremely expensive product called dap flexible floor patch. How to patch and level a concrete subfloor pretty handy girl. Please send us information regarding the proper chemical to use to achieve the proper mix for the lightweight concrete. We are building a 2story condominium complex with concrete slabongrade. Mix the floor leveling compound with water in a bucket, following the manufacturers directions.
Installing wood subfloors over concrete hardwood floors. Feb 22, 2007 hello at,i am looking to have a polished concrete floor in my kitchen. Whats the difference between selfleveling cement and floor. Hello at,i am looking to have a polished concrete floor in my kitchen. Get a comprehensive breakdown on which materials to use, what to take into consideration and what steps to take for four subfloor systems. This video shows you the process of applying epoxy over wood subfloor. In woodframed construction, gypsum can be poured directly on the wood without wire lath reinforcement at 19 mm 3. Use a hammer and a cold chisel to level the bottom of the hole and undercut its sides slightly so the patch cant pop loose. Is it possible to have a polished concrete floor over my wooden subfloor my kitchen is on the main floor of my home but there is a basement below it i would appreciate any help or suggestions you can give me. How to install a polished concrete over wood floor.
Assuming it has the right ratio of sand to cement to water. Would think sds plus tile chisel will work, going to be slow work though. Traditional latex modified or gypsum based underlayments will crack along joints. It has a plywood subfloor that i would like to cover with a thin but durable layer of concrete that i can stamp and color. Its only for plywood and concrete, but i tested some on my exposure 1 rated osb subfloor and it. If the psi of the concrete is unknown, use the floated subfloor installation method or contact the adhesive manufacturer. Fill large cracks and splits with wood patching compound, and allow it to dry fully before continuing. Floortop stg is specially designed to smooth out uneven, rough or minor deteriorated interior concrete floors.
The original plan was to do a 2 concrete pour over our radiant heat system as recommended by our builder. So you might want to consider filling the crawl space. Because microtoppings are so thin they are not selfleveling. Concrete resurfacing over wood or plywood substrates duraamen.
Over lightweight concrete less than 3000 psi, if the flooring adhesive used has a higher shear strength than the concrete, use the floated subfloor installation method. In any case, the moisture content of the wood subfloor should be within 4 percentage points of properly acclimated solid strip flooring within 2 percentage points of. Concrete weighs 25lbs per square foot when it is 2 thick. In ongrade and belowgrade installations, moisture control systems are always recommended, and required when calcium chloride readings are greater than three pounds, or when relative humidity readings are greater than 75 percent.
Instead of solid concrete, the typical concrete porch deck is a poured concrete slab on a wooden substrate. Mar 27, 2018 a moisture control membrane is recommended any time a wood subfloor is installed over concrete. Should i put a membrane between the concrete topping over. Grind the floor, use a selfleveling compound, or use a subfloor to get it pretty close to even as possible. May 14, 2018 learn how to install beautiful hardwood floors over a concrete slab. You would have to put down about four inches of concrete to get a floor that wouldnt crack and crumble. Concrete floor video on how to install concrete over an existing wood subfloor. Before you install any flooring material over a concrete slab, it is important to inspect the slab for defects. Allow the thinset to completely dry before you seal the. Weight down the first few rows with something heavy, but use a rag underneath the weight to protect the floor. Nov 18, 2018 self leveling compound or underlayment can be poured over a wood subfloor, but it is critical to choose the right product and to follow the correct methods when installing. Take out all movable furnishings, cabinets, and bookshelves from the floor area to be prepared. Homes with slabongrade foundations often had solid concrete as the subfloor, but it was always covered over with some type of finished flooring material, such as carpet, vinyl, hardwood or laminate. Apr 29, 20 patch used to fill cracks, chips, gouges prior to installation of flooring.
Whats the difference between selfleveling cement and. Top 50 best concrete floor ideas smooth flooring interior designs you are in the right place about grey flooring here we offer you the most beautiful pictures about the flooring outdoor you are look from rustic to modern styles, discover the top 60 best concrete floor ideas. Use a 6 staple pattern at the perimeter of the subfloor. Ideal for filling and leveling surfaces prior to installation of carpeting. I would like to put a concrete floor in my living room its on the first floor with only a small crawl space under it. Dec 19, 2018 before you install any flooring material over a concrete slab, it is important to inspect the slab for defects. A moisture control membrane is recommended any time a wood subfloor is installed over concrete. How to patch and level a concrete subfloor concrete. Explore smooth, polished and painted flooring interior designs. Radiant heat floors provide an efficient even heat throughout any room. The installation of calcium aluminate cement based selfleveling concrete, param 5500 along with expanded metal lath for reinforcement is a successful fasttrack method to convert a plywood subfloor into a beautiful concrete floor. The wood subfloor must either be solid hardwood flooring, a minimum of.
If a wood subfloor is laid over an existing slab, the membrane can be cemented to smooth, cleanswept concrete. Do like the heller sds tile chisel,from competitor,the whole heller range last really well. There are three options for this, depending on what part of the country you are in one may be better than the other. Using a power sander and 120grit sandpaper, sand over the wood floor to remove splinters, chips, and fine cracks. Self leveling compound or underlayment can be poured over a wood subfloor, but it is critical to choose the right product and to follow the correct methods when installing. Patch used to fill cracks, chips, gouges prior to installation of flooring. Do not use readymix concrete such as quikrete as this is not suitable for patching. Patch and level a concrete subfloor preparing the concrete floor. Pouring concrete over wood floor everything about concrete. However, large holes that have damaged even the subfloor will have to be repaired.
How long should concrete cure before installing tile. Leggari products simplifying the industry having the best epoxy and the easiest. It is the situation that determines the product to use. Concrete resurfacing over plywood substrate duraamen.
A concrete floor that has small blemishes, like cracks or pits, but that has a sturdy subfloor can be given new life by pouring a layer of concrete on top of the old. Use a damp cloth to clean off adhesive from surfaces. Lighter than precast or poured concrete, usg structural panels install like wood sheathing and are mold, moisture and termiteresistant. The first step to proper installation is to get the subfloor in order. How to install a plywood subfloor on a concrete slab hunker. How to install a wood subfloor over concrete with screeds engineered wood flooring less than. Spread the leveler over the floor with a trowel or a gauge rake so it covers each low area completely. If you can determine that your existing framing can carry that much additional dead load, then definitely rebar and remesh the mesh well or itll crack. Microtopping treatments are made with very thin layers, no thicker than 18 inch, of polymermodified concrete containing sand and are applied with trowels or brushes, depending on the final look desired.
Concrete resurfacing over wood or plywood substrates. Using a paint roller, roll the primer onto the floor and wait for the primer to dry per the instructions on the bottle. How to level an uneven osb subfloor before laminate. Concrete underlayments, installing underlayments, and info on. Frankly, stacey, the thought of a concreteoverwood floor frightens me badly. Jan 07, 20 patch and level a concrete subfloor preparing the concrete floor. Clean the concrete surface, and apply a thinset compound to all of the low areas until the surface of the concrete pad is smooth and level. For the second story a foamed type of lightweight concrete is being used over plywood for sound absorption between floors. Pour a generous amount of mixed leveler onto the subfloor, focusing on one or more wavy areas. Astm f2471 19 standard practice for installation of thick. Vinyl is one of the few types of floors that can be safely installed over concrete, wood, or other solid floors.
I have took up my carpet and foam, cleaned my subfloor and i would like to pour cement. Self leveler used to cover larger area where there is too much damage to spot patch, also to create a smooth surface, covering existing surface. Unevenness in the subfloor can cause added stress to the locks or joints in the system and cause the floor to come unclicked and or break the lock system itself from this condition. I have listed a couple of forgiving flooring materials carpet and vinyl to use over uneven concrete floors. If you can determine that your existing framing can carry that much additional.