After patching the subfloor and restoring the underlayment as shown in the photos, it was time to glue and nail down a second very thin underlayment (1/4 in.) If you're planning to lay tile instead of more wood on top of the pine, use a cement backerboard. If you’ve removed an old floor to replace it only to find that the subfloor underneath is damaged, you will have to replace the subfloor before installing a new floor. Use subfloor adhesive, and screw 8" at edges, 12" in field. “Adequately protected from moisture, most subfloor materials can be expected to last for the lifespan of the home.” However, if the subfloor is consistently exposed to moisture, you may need to replace it after 20 to 30 years or sooner. For the 1/2" underlayment, ideally, you want to screw every 6" all across the panel. When laying it over an existing floor, a thinner plywood panel is acceptable; it should be at least 1/4 inch thick. "In new construction, the best subfloor for wood flooring is nailed and glued 3/4 inch T& G plywood, with the finished flooring installed perpendicular to the joists if possible. Here there are, you can see one of our new subfloor over old collection, there are many picture that you can found, we think you must click them too. said by Edge1: 1) take out old vinyl floor if it isn't STUCK 2) install new vinyl directly on top of old if old is in OK shape 5) install new subfloor directly over old vinyl We nail solid hardwoods directly to the pine subfloor with no problems. New subflooring over old, or do you rip out the old floor first. Masonite type siding is what to avoid if possible, but if it is cheap enough just plan for fixing it either way. Layering makes it easier to change the visible floor if you tire of the look or if it has become damaged. – getterdun Feb 23 '14 at 16:44. add a comment | 2 Answers Active Oldest Votes. You would still have to seal the gaps before placing the new sub-floor material over the old flooring. Not only does this create a stronger base for your floor, it also allows you to lay new flooring in the same direction as the original floor. If you bond to old paint, sealers, polish, or other foreign matter, you are dependent upon the bond of that material to the subfloor to hold the flooring in place. If done carefully & neatly, you can overlay successfully. this floor consists of a paper honeycomb about 3" tall sandwiched between two layers of parcticle board, abd has NO FLOOR JOISTS. If the difference is significant and runs the length of the room, you will probably need to rip up the old subfloor and install a new one to ensure consistency. Laminate Flooring, which can only be installed using the floating method, can be installed over a 3/4" thick plank subfloor (over the recommended foam pad) as long as the plank subfloor is flat. As I stated I got too involved a couple of times in the past, & therefore agree that overlaying is a viable option if the floors are really bad. If the flooring you purchase can be installed over existing flooring, you will still need to consider some other things. To avoid nail pops, pullouts, and shiners (nails that barely hit the joist), all of … You can then put a piece from the center of the flange back to the wall & the other piece from the center to the front wall in front of the commode. Once that existing wood flooring is ready to act as a subfloor, you will need to install your new floor at a 45-degree angle or perpendicular to the existing flooring. I have seen some real butcher jobs though, that caused much more work for someone later to have to fix. Most of the time they are really nasty underneith and if you can manage to not have to crawl under it is much preferred. You may or may not want to caulk the edges, depending on where it is & if you will keep the unit. plus the moisture and rot of the old floor will reduce the life of the new floor. Fasten plywood shims to the joists and then dry-fit the new subfloor over them, measuring the difference between the high and low points again to make sure the inconsistency in the height of the subfloor is as minimal as possible. The contractor did put that red paper over the old sub floor first though – maybe thats what makes it so solid. It is a good Idea to make sure you have clean outs while you are messing with the ol’ poop chute (pun intended). If you use adhesive for the underlayment, you can get away with fasteners every 8" using ring shanked nails. This has the outside sill under the outside wall & no joists crossing the frame, only the steel out riggers every 4’. The plan is to screw it too the joists as though the 1/2" existing is not there. 1. The bond of the flooring to the subfloor is only as good as what you bond to. The nail or screw heads should be "set" below … new subfloor over old subfloor. Plywood is the best subfloor choice to lay on top of the pine because it nails in securely and creates a flat, even surface for the new floor to adhere to. There are also Siding Claims Groups for Louisianna Pacific, Masonite, & Abitibi- Price hardboard siding. But if you have a crawl space or earth directly beneath, you know that you are best to use Tar Paper or plywood to help place the new flooring over. In most situations, the easiest way to firm up the floor is to install a layer of 1/4" plywood over the subfloor (nailed or screwed and glued) in such a way that the new plywood seams do not lay over the old seams. I plan to install 3/4" tongue and groove subfloor on top of it. Particle board can be used, but it's not as strong as plywood and is extremely susceptible to moisture damage. each brand has a unique pattern that is the company’s trademark. Thanks. Here’s what you need to know. Any home that has the grey polybutylene water supply plumbing lines may still be eligable for repairs, repair reimbursement, & replumbing with CPVC under the Plumbing Claims Group. A floor is only as good as the subfloor that is underneath it. Whether or not you need plywood underlayment under engineered wood flooring depends on the condition of the original subfloor. screws spaced every 6 in. About half of the subfloor is clean wood (had carpet). TIP: When you buy … Several materials can be used for the underlayment, chosen based on the type of surface flooring being installed. Sorry, I do nothave the contact info, but you can Google for it . Use 1-1/2 in. I had new flooring installed right over the old sub-floor on my entire parlor floor and its just fine – no creaking, dipping, sagging, buckling or anything. If you have to, you can cut the pipe that the flange is glued to & put a coupler in & that shoud give you all of the room that you need. REPLIES (7) Shawn … I usually staple the edges close & cover that with trim, 1/4 round works well. However, the wood isn't as hard as some other flooring choices, such as oak. Adding subfloor and flooring could raise the floor height 1 inch or more, depending on the type of flooring you choose. It has 5 ply 1/2" subfloor. My question is, can we place a subfloor over the linoleum without having an asbestos remediator come out, or will the screws disturb the fibers if it is in fact asbestos? For example, if the pine floor runs parallel to the longest wall in the room, lay your subfloor panels so that their longest side runs parallel to the shortest wall in the room, across the floorboard planks. Pine offers grain textures and knots that create an interesting look on your floor. She earned a BA in communications from Jacksonville State University. I had actually suggested that maybe the thing to do was to replace the old sub floor and the … When it comes to laying your new boards over the old, there will be no scope for negotiation when it comes to direction ie. so if you have to replace any wood then there is nothing to fasten to along the outside wall, & you have to remove the old floor in sections & block in so that your floor has support on the outside wall. Research conducted by the National Oak Flooring Manufacturers Association has shown that 5/8 inch plywood or 3/4 inch OSB also have adequate nail holding ability for hardwood flooring, although OSB can … There are several reasons for this: Continue alternating the seam panels so they don't line up. Beginning her career at newspapers such as the "Marietta Daily Journal" and the "Atlanta Business Chronicle," she most recently worked in communications and management for several nonprofit organizations before purchasing a flower shop in 2006. The companies that I listed are the manufacturers of the siding. A LONG established method of preparing a subfloor before laying resilient or textile floorcoverings is to overboard the area with a suitable grade of plywood or hardboard. Common materials include plywood, … Sinking sections are tell-tale signs of subfloor failure. Based outside Atlanta, Ga., Shala Munroe has been writing and copy editing since 1995. The flooring must be installed crossing the subfloor boards (at a 90 degree angle). I like to use screws to put the repair joists, block & put the plywood down. For the second row, cut the first subfloor panel in half. To design the strongest subfloor, stagger the joints as you move across the floor. Installing plywood underlayment over a subfloor is fairly straightforward. Take the height of the floor into consideration before installing the new subfloor. Totally solid. In my opinion, plywood floors is one of the most important things to look for in a home if you are buying it to move. In fact I have been known to only glue the bottom, and supporting the drain pipe with a strap or hanger(poop will not run uphill without help) the top will not leak if the pipe is inserted an inch or more, but don’t leave yourself a future problem, make sure. POST A REPLY TRACK THIS POSTING. Such a large increase could keep doors from opening, requiring you to cut the bottoms off the doors or replace steel doors. Over the subfloor, there is an underlayment that smooths out the subfloor and provides a flat, level surface for the finished flooring surface. Step 1: Remove Old Baseboards If it's unlevel or you're worried about its strength, a 1/4-inch sheet of plywood can help level things out and strengthen the subfloor without raising things up too far (to minimize the undercuts of door jambs, transitions, etc. Another type that presents problems & extra work is a trailer that has the floor joists running parallell to the frame, or the length of the box. I have always preferred to “fix them right” that is cut out the bad wood, repair or replace floor joists as needed & block around the edges of the patch so that the repair is solid. I have used black drywall type as well as deck screws, but the square drive will work great but they are a bit pricey. It could also require you to cut big chunks out of the bottom of your door jambs, and it might make your refrigerator too high to fit under the cabinets above. You'll start laying plywood over floorboards by putting a square in the corner and leaving about 1/8 inch between the plywood and the wall. Unfortunately it is not worth moving due to the age & 2x2 wall construction. When the adhesive requires, add a moisture control system before applying the adhesive. I am old scool & I used to always try to fix stuuf the best way that I could, without “rigging” it up. Plywood is the best subfloor choice to lay on top of the pine because it nails in securely and creates a flat, even surface for the new floor to adhere to. We need to put a new subfloor down as the kitchen has had one added and we want all the floors to be at the same level. Issues with a subfloor become far more … Bret, you are correct about the front & back doors, but you can check it out with a piece of scrap plywood, to see if you have clearance. But I have nearly gotten over my head a time or two & wished that I had not opened the can of worms so to speak and tore up so much that I had to fix. It is never a good idea to install a new floor over a subfloor that is rotting or otherwise unsound as it can eventually lead to problems and even total failure of the new floor. When direct gluing a wood subfloor over concrete, follow the adhesive manufacturer’s recommendation for moisture requirements and limitations, type of adhesive, application method, trowel notch type, and spread rates. One good thing about these kind of generators is that they will begin robotically by detecting a energy outage. If the current flooring is fixed to the subfloor and in good condition, you may be able to apply a new flooring over top. First, you need to look at the condition of the current floor. Having said all of that, if the floors have buckles or waves, then you may have to cut between, and parallell to the joists to let the particle board lay down flatter, to do an overlay, you may also have to shim in places where the board is rotten to bring it up level so that the plywood has a solid base. I know someone who has a 1971 doublewide that has the original carpet in it, it has had the floors in the baths redone as well as some of the kitcken, but it is in overall good shape. The floorcoverings can then be loose-laid if required on a domestic project or bonded, more usually, if it’s a commercial project. We've researched enough on how to install the newer subfloor, but the one question that we can't get a clear answer on is wether or not to screw the newer OSB subfloor into the floor joists. © Copyright 2020 Hearst Communications, Inc. While this is not an easy task, a do-it-yourselfer can complete the job with a few pointers. Nope, I have lived in Florida my whole life. Save yourself time & money by setting the trailer and a few dozen c-notes on fire. You can then put a piece from the center of the flange back to the wall & the other piece from the center to the front wall in front of the commode. Re: Adding new sub-floor over old particle board Post by David Oxhandler » Mon Apr 08, 2013 2:04 am Overlaying already compromised particle board decking is a mistake, because once particle board absorbs moisture the decking will continue to … NOW before you put that whole piece in like you want to, figure out the best place to cut it in half or so, and install the piece that goes furthest from the door first, then you can finish the plumbing where you can stand on the ground and not have to crawl under the house. If your clearance is no enough, the you can replace a square in the door swing area, & do an overlay on the rest, you can buy transitional trim for the differences in floor heights, which should be only 3/4". Seems to me the 1x6 is the sub floor. How to Fix a Pergo Floor Where the Seams Are Separating, Tips on Installing True Heart Pine Flooring on Top of Concrete, How to Finish Hardwood Floors With Cedar Oil. Rick, you wouldn’t be from Wisconsin would you. I restore old houses. Care taken to minimize gaps around walls & ducts will make the job better, & 1x4 or similar base will help hide the gaps. I really don't understand why you are adding a new sub floor over 1x6. Now I am older & tired & would overlay one in a minute, but I would still do a good job. Improper nailing. When you figure out the brand they will send you a claims package. Finished flooring materials can be installed directly over the subfloor or over an underlayment added to the subfloor. Unlike the subfloor, this is not a structural element, and it provides no strength to the floor. Some say it's better to do it that way, … You didn't say what you plan to put on top, so I can't say what I think about that. This method of laying a sturdy subfloor on top of joists and then topping the subfloor with a cosmetic-only flooring top creates a tighter, stronger structure. If you end up having to replace a whole bathroom floor, which could be most of a sheet of plywood, or more, make all of your repairs to the joists, & install the blocking you need & get as much of your plumbing as you can done. If you must install parallel to the existing floor, lay a minimum of 3⁄8-inch plywood over the top to increase stability. We are going to install 5/8 inch T&G OSB over the old subfloor and eventually put on a rubber underlayment followed by bamboo flooring over that. Underlayment can provide a smooth surface for flooring, among other properties. Why can't you install flooring directly over paint or other coatings on a subfloor? On the 3/4" subfloor, you have the right idea. Mostly these were late 60’s & early 70’s, I had a “Royal” doublewide (it was a royal pain). when the sub-floor rots all the way through, there will be nothing supporting your new sub-floor. Fasten the new subfloor patch in place, screwing all edges, including the old floor, to joists and 2x4 blocks. Tear out the rotten parts first then put in new sub floor As for flooring yourself into a corner, I guess that you could jump out of a window and pray that you survive the fall from the height (5’) kind of a wobbly box hari-kari sort of thing. Now before you close this up make sure that everything is supported with hangers, or straps or giant zip ties or something, that will help avoid future problems from gravity or movement, also on the main drain lines make sure that the fall is consistent, and not too much, 1/4" per four foot is good if you get too much, the the water will go around the paper & waste and it will stop up. you must lay the new boards perpendicular (at 90 degrees) to the old ones. I have done floor work in many, many mobiles. The first is that the sub floor planks are stable, well fixed and in reasonable condition. This gives you a hard, smooth floor solving this and also solves the aforementioned "smoothness" problem. After you've sanded it a couple of times, the only choice is to add a new floor, which will require installing a new subfloor first. Not all exterior doors swing out, but most single wides do. My question is how clean does the 1/2" need to be? There are some that love the old floors and the look that they give. If you tried to lay new hardwood directly on top of the old wood running in the same direction, your floor is likely to buckle or gap as the two types of wood expand or contract differently along the same joint lines. It's normally installed with mortar rather than being nailed into place. There should be no seams that follow the lines of the pine below across the room. Install the half-panel at the beginning of the row followed by a full panel. Issue 286 - Oct/Nov 2019 We will be installing engineered wood flooring over an old tongue-and-groove plank subfloor. it is easier & better. Before you decide to lay subfloor and new flooring over your old flooring, measure the distance from the bottom of the doors to the floor. to assure a perfectly smooth surface for the vinyl floor. As the pine floor ages, it's likely to warp, chip or crack. Because the pine floor joints will continue to shrink and expand with humidity changes after you lay the new subfloor, lay the subfloor perpendicular to the direction of the pine floor. Sometimes you can get the toilet flange to raise up by taking the screws out of the flange & prying it up. ). They may have print on the panel facing inside that has their name, & you would have to remove some paneling & insulation on an outside wall to see it. REPLY TRACK. This is because the materials will expand and contract depending on factors like temperature and humidity. Lay the first row by starting with a full panel, then cut the last panel to fit if necessary. There may be enough money there to be worth pursuing, particularly if you have a park with several homes that fit the category, & have time to persue it. There is one kind of floor that should be avoided, and that is a “honeycomb” floor. Powered by Discourse, best viewed with JavaScript enabled. I bought a 50s ranch. Unlike subflooring, underlayment is not a structural material, and it is not required with many types of flooring. Each company will ask you to either take pictures of the “trademark” pattern, or send in a small piece of the panel to identify the brand. I know a Rick Lee that was in the Sparta/Tomah area. If you are replacing vinyl, it is a good idea NOT TO GLUE it down, as it lays better and if you have to replace it later, it is much easier. Sometimes you can get the toilet flange to raise up by taking the screws out of the flange & prying it up.