The subfloor is plywood, is a patching compound the way to go? with patching compound or a quality underlayment (ARDEX, Feather Finish or similar). We have several low spots that vary in depth. 4. Plan the layout of the plywood sheets so the long dimension of the plywood runs perpendicular to the floor joists. Background: Small Bathroom remodel. Re: Flattening a Plywood Subfloor My flooring guy uses the roofing shingles, multiple layers of felt paper to shim up these dips on nail down applications. Using Luan Subfloor For Laminate . How to Patch Damaged Subfloor Step 1. Fill Plywood Subfloor Gaps An effective strategy for filling large gaps is to mix patching compound to a stiff, mortar-like consistency, trowel it into the plywood subfloor gaps and wait for it to stiffen before troweling it smooth. With correct application, these patching compounds dry in a manner that makes them indistinguishable from the original section of wall. Amoung Manufactuers of Vinyl Flooring, Hardwood Flooring, Tile Flooring, and Laminate Flooring, the choice is … Posts: 287 Received 0 Votes on 0 Posts Under a laminate I normally will use felt, shingles or 90lb roll roofing to build up the low areas. For optimal results, have a drywall knife, sandpaper, and any specialty texture applicators or sprays on hand. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more. Accepts stain better than conventional wood patching compounds. In new construction, moisture tests of the existing subfloor and the Halex Plywood Underlayment panels are recommended. Apply floor patching over the screw heads and the plywood seams After the patching compound has dried, sand the compound Vaccum and wipe with a damp cloth all the resulting dust 1/2 Inch Luan 4ft by 4ft Does Luan Plywood come in 1 inch (1 ") format? Add more wood screws, if needed, to secure them. There are many self-leveling concrete compound products on the market, as well as patching compounds. Make sure to remove stray nails or staples. If you’re building a floor from the joists up, this technique will save you a lot of time and aggravation later. De très nombreux exemples de phrases traduites contenant "portland cement-based latex patching compound" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. Again, follow the instructions for your mixture to fill in either the valleys you made in the old compound or the spot where the compound was. Nail flooring at shims, then use trim head screws in between. Secure the plywood to the subfloor at 6-inch intervals with 1-inch deck screws placed along the edges. Apply floor patching compound to the joints and over the screw heads. His statement to me on the levelers is that on nail downs he doesn't want something that can break up under the flooring. When leveling floors made of wood, you’ll need to sand down any high spots. Using Luan Plywood as Flooring. If you run across a situation that isn’t addressed in this document or requires Member. Regarding plywood subfloor prep, the manufacturer states: "It must be flat with no visible bumps or low spots; the subfloor should be flat to within 1/8” in 6 feet span or 3/16” in 10 feet." Step 5: Use a belt sander to reduce high spots. Once it’s dry, sand the surface and you’re good to go. Breakfast Room Progress Plywood Subfloor Installed Over Breakfast Room Progress Plywood Subfloor Installed Over 17. Smooth it in place and allow it to dry. Mix it with just a bit of superglue. And patch small gouges (quarter sized)? For questions about proper subfloor installation, call Custom® Building Products. Typically, it is the joists under the plywood subfloor that you’ll plane to level the floor. 5. You don’t need a lot of glue, just enough to bind the sawdust together and create a thick paste. Some sanding may be needed when it sets completely. What I have is 1/2" plywood underlayment screwed to tongue and groove subfloor. The first step is to put some “dead wood” underneath the hole so you have a way to secure the patch. It is very secure. Installation Guide for Luan Wood . A general contractor told me to follow the recommendation for the vinyl sheet flooring I will be installing. Acclimating the Plywood Underlayment Allow Halex Plywood Underlayment panels to acclimate at the jobsite for 48 hours before installation. I thought this could be done using shingles and some roofing felt to build up the low spots. Typically you can see where the nail line is on the subfloor, but obviously a stud finder can work too. Step 4: Level your floor by filling low spots with patching compound and a putty knife. patching compound; sand joints, high spots, and patched areas until smooth. What are some methods that can be used to seal an OSB subfloor from moisture? Fill Plywood Subfloor Gaps An effective strategy for filling large gaps is to mix patching compound to a stiff, mortar-like consistency, trowel it into the plywood subfloor gaps and wait for it to stiffen before troweling it smooth. Allow a day for the product to dry completely. #6 12-07-05, 01:46 AM J. Jerry T . Best Floor Leveler Plywood Level Best Floor Leveler Plywood Level 18. 1 Important Notices These Installation Instructions cover most installation procedures. For raised seams between sheets of plywood, use a belt sander or angle grinder to sand down high spots. Sand any rough edges with medium-grit sandpaper. The condition of the slab and products you are working with determine which methods to use. If you are truly worried about that you can use something like redgard but I think that is total overkill. Cut shims and place in-line with floor joists, then use a leveling or patching compound screeded to the shims. It was crumbled, mildewed and in loose chunks two foot around the tub, and a foot around toilet and vanity. A fast-setting, polymer-modified, cement-based compound that provides a smooth finish to interior and exterior subfloors prior to the installation of a floor covering. Cleans up easily with soap and water. Join Date: Feb 2003. 7. If the subfloor is plywood or particle board, start by screwing down any loose boards or plywood sheets. Step 2. Quarter-inch lauan plywood is the top material for underlayment among home renovators and contractors. The guy I hired said he could spackle the holes. Some sanding may be needed when it sets completely. Using floor patching compound to level a subfloor. In new construction, moisture tests of the existing subfloor and the Accuply Plywood Underlayment panels are recommended. Then check to see if you have yet another job gone bad, or if you solved your own problem. A ready-to-use patching and leveling compound for smoothing and repairing concrete, wood and masonry prior to flooring installation. Replace any nails with screws, since nails that popped up will loosen again. Installing resilient flooring over wood substrates will not diminish or prevent possible protrusion of the wood joins through the resilient flooring. Using Patching Compound with Plywood Underlayment Using Patching Compound with Plywood Underlayment . From the aforementioned book, the author shows a diagram of an out-of flat subfloor and shows shims spaced 8″ o.c. Another important component is a metal mesh screen to place over the hole before applying the compound. Use medium-grit sandpaper to smooth the area, cleaning thoroughly when you’re done. Identify where your floor joists run. Apply floor patching over the screw heads and the plywood seams; After the patching compound has dried, sand the compound; Vaccum and wipe with a damp cloth all the resulting dust . I wanted to use the largest pieces of wood I could fit between the joists under the subfloor to disperse over the largest area possible any weight that will eventually be put on this patch. Note any low or high spots. To patch wood using this method, you’ll need sawdust from the specific wood you are patching. 5) Moisture: As with plywood and OSB subfloors, … It’s important to know where the joist is because you’re going to remove the damaged plywood right up until the floor joist without cutting over the floor joist. Checking the plywood subfloor for true and level, I found a pretty big dip (1/2") ... Self-leveling compound cannot seep through the plywood unless you put way way too much on. Right now there is a plywood subfloor that is nailed down. Best Esther Maria Santiago Latin … Others are made from epoxy or polyurethane, and can either be applied like a mortar or injected into the crack. Most subfloors will have low spots that require filling with floor patching compound. Shop Henry H 345 1-Quart Indoor Floor Patch and Leveler in the Surface Preparation department at Lowe's.com. A new layer of 5/8-inch or 3/4-inch tongue-and-groove plywood subflooring is like adding a new subfloor over the old to create a stiffer, flatter surface for any type of finished flooring. D Basement Subfloor Options Dricore Versus Plywood Home Basement Subfloor Options Dricore Versus Plywood Home 19. I’m just focusing on patching the subfloor in this post to keep it simple. Grainger's got your back. Unit: Subfloor coatings and toppings LMFFL2102A: Prepare, select and apply smoothing and patching compounds LMFFL2103A: Select and apply appropriate compounds and additives LMFFL2105A: Select, prepare and apply moisture barriers and damp proof membranes to concrete sub-floors Section 3: Priming, patching and levelling Using Ceramic or Carpet Over Luan Wood. You should never use gypsum-based products, like water putty or cornice cement. No squeaking, and no water damage. Most of them being 1/4″, some are 1/2″, there is also a considerable dip. Remove damaged subfloor. Check your subfloor to make sure it is level. Flooring Using Leveling Compound Plywood Subfloor 16. Some of the screw heads are recessed, up to 1/8" deep. Bonding to Plywood and OSB Surfaces. Tile came up with finger pressure, underneath was Gypsum Concrete (Gyp-Crete or Pyrofill). Also levelness does not matter, it is flatness that matters. Here’s a video demonstration of how to plane and level the joists. Concrete that was treated with curing compounds must be evaluated for suitability or mechanically removed. Price $44.00. Step 5 - Use the Compound. Plywood floors, including those under resilient flooring, must be structurally sound and must meet all industry guidelines. Underneath there is a crawlspace. No matter what kind of flooring you’re installing, it’s important to make sure the surface beneath it is level, smooth and flat. It's quality is unsurpassed, and it is extremly durable and long-lasting. Test multiple areas using a large level. Step 6 - Your Last Option Some patching compounds are cement-based mortars and are applied with a putty knife or trowel. Removing Luan Plywood - Instructions. Acclimating the Plywood Underlayment Allow Accuply Plywood Underlayment panels to acclimate at the jobsite for 48 hours before installation. Set all screw heads slightly below the surface. on top of and parallel to joists when you are going to put a plywood underlayment on top of the … For glue down engineered floors he uses the leveling compounds. Use a putty knife to push the mixture into the nail holes, quickly since superglue dries so quickly. I have an 8' level, which shows level is good but there are a couple of areas that are not flat to within at least 1/4" in an 8 foot span, which I assume need to be filled in. 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