The consensus seems to be condensation in the subfloor of the eaves that is dripping down. There is no easy solution. Anonymous. I'm not sure what's causing this. We never turned on the AC yet plus it seems to be related to the rain. The spots will absorb moisture when humidity is high. With vinyl planks and PVC tiles that are thinner than 5 mm, it is also extremely important that the wall clearances are observed and no heavy elements such as … So we did and found SO MANY pee spots, many by the baseboards and the tackboards had many blackened and streaked areas that our flooring installer said were not mold, but just rusting of the nails/tacks in the tackboards from the urine. After power washing the carpet and preventing myself from spilling anything within that area, it's still wet and spreading farther out. If wood is good or floor is concrete, you can use a subfloor sealer to prevent more damage. The drain line is dry with no leaks and is above the subfloor. Up first in hardwood flooring week is tackling a particularly challenging section of our subfloor that couldn't be leveled using our asphalt shingle subfloor leveling method. Step by Step. completely. When installing DRICORE ® Subfloor R+ panels up to shower stalls or bathtubs, run a flexible caulking to seal the gap between the finished floor and the tub/shower unit in this area to prevent excessive moisture from seeping between the finished floor and DRICORE ® Subfloor R+ panels. It's a white pigmented shellac-based primer and will completely block the pet odor. Don't look to unfavorably on the contractor because of the rain hitting the lumber....it won't hurt it....the lumber has been outside for the last 30 to 80 years....and it knows how to handle the elements. You can prime the subfloor with Zinsser B-I-N primer. Look at the floor surface in the room. Meanwhile the wet spot continues to damage the wood. Our realtor is worried about the dog smell and would like us to clean the … They are a big problem in homes with particle board floors. I pulled out some of the wood (with my hand...) and now there is a hole in the floor. When wood floorboards get wet, they swell. Extremely saturated areas of your subfloor should be replaced if the wood has peeled or puckered. The worst of the subfloor damage was found with a foot going through the floor. Apply wax and polish with a cloth. 2 0. Test the exposed subfloor in multiple spots with a 2-pronged moisture meter. Dry it completely and seal it with paint, poly, laquer, etc. All moisture problems must be eliminated before laying. So do the radical surgery and put it back together better than new. Your subfloor has been damaged by pet urine. ; Placing hot items like iron boxes, pizza boxes, and hot pans can cause white marks on your wooden floor. If there is an area that has not had a spill which caused a spot, then it is likely that the wood in the subfloor is rotting. When left unattended, this will cause your subfloor to get mushy and eventually cave in. This will also help the subfloor to … If the moisture level of the OSB is above 20%, it needs to be dried out. They frequently occur in bathrooms, under flower pots, below windows, and behind washing machines. It didn’t take much to dig up some of the flooring, plywood underlayment and the 3/4-in. Sand any spots that remain with very fine-grit sandpaper, going in the direction of the wood grain. This will probably be the most effect way of blocking the odor without replacing the subfloor. ; White streaks or spots may also form due to the wrong cleaning technique and cleaning products. If you remove a few floorboards (one every 5–10 feet (1.5–3.0 m) should be fine) will allow your floorboards to expand without buckling or cracking. My eaves are dry also with no apparent leaks anywhere. In some cases, it simply won’t be possible to access the OSB subfloor at just a few spots in the area. There is no better odor killer and sealer than shellac. The wet spots are in many places close to fireplace and some are in the middle of the room. Start where the wet spots are appearing. The leak could quite some distance from the wet spot and be travelling down … If your sleepers are right on top of the concrete floor, that will prevent air circulation through the subfloor and concrete. You do not want any wet furniture to be left in the house for an extended period of time as it become breeding grounds for mold and mildew. Remove Damaged Subfloor: Use a flat pry bar to remove the damaged particle board. I think it's been leaking for about a week. Wet subfloor on second floor. shiplap that served as the subfloor. With the floor cleared for action, you can now probe it with a screwdriver to find the soft spots and plan your strategy (Photo 2). I'll repair the leak, but how do I know if the subfloor is rotted without pulling up the vinyl floor covering? 4 - Spots On The Flooring. The floor is peel-and-stick vinyl squares and the wet spots on the carpet are exactly over the "cracks" between the vinyl squares. Water damage. Susan asked: Is there any way to clean particle board flooring once the carpet is pulled up?We have three dogs inside the house. Then vacuum the floor with a wet-dry vac or sweep it with a broom. In the last two weeks, I've noticed this particular wet spot form in the carpet around the stairs. The wet spot remains. Vinyl flooring can either be glued to the subfloor or it can float on top of it, and either way, moisture underneath it causes problems. If this is your case it can be fixed by fixing the subfloor, which acts as the base and support for the floor above it. Remove a few boards to let the others expand and dry the subfloor. If you want background on the entire leveling project, I suggest reading the shingle-method post first. Before I would rip up all that subfloor, I would invest in BIN white pigmented shellac and roll a heavy coat over the entire floor area in the entire house. Over the subsequent weeks, mold growth forms before the building materials can dry out. That’s when sub-floor surgery becomes your only option. Another common cause is exposed soil in the crawl space. How to Remove Moisture From Underneath Vinyl Flooring. Soaked wood quickly develops mold … Most floors have two layers of wood: an underlayment over a subfloor. Remember that mold and mildew can bloom within 24-36 hours so this step is crucial. Unfortunately, this is fairly common in new construction. Soft spots are less common in newer homes that have plywood or OSB (Oriented Strand Board) subfloors. Does a wet subfloor need to be replaced? The subfloor usually runs in a continuous sheet under all the walls. High and low spots that are barely detectable by the eye can cause the floor boards that are spanning over the low spots to sag. Before you install file flooring, follow the directions above for fixing high spots and low spots in a wood or concrete subfloor. Use a wet-vacuum to clear up dust and debris and use a level to be sure all the low spots are gone. In cases of extensive water damage, drying the subfloor after a flood can be very difficult, and that complicates repairs. Make a final check with the level to be sure all the high and low spots are gone. They occur when the subfloor gets wet, causing the sub floor material to begin failing. It might only be 1/16" or less but it is enough that you will notice it as you walk over it. Pet urine in a subfloor can raise a stink long after the flooring above it has been cleaned or replaced. At first it was just a small wet patch and thought maybe I'd spilled something. This isn't the same as having a floor squeak when you step on it, which simply indicates that the subfloor isn't tightly fastened to the floor joist in one area. Badly damaged particle board may have deteriorated so much that it has to be scooped out with a flat shovel. How to Repair Water Damage to Plywood on a Kitchen Floor. In order to properly install hardwood floors, the plywood subflooring must be even, or level. Before you begin, make sure your RV is parked on a level surface. Cut Damaged Subfloor: Set a circular saw to the proper depth, so it cuts just through the thickness of the particle board, and make the cuts. Of course, this supposes that the spots do dry out first. Sanding the subfloor can remove minor swells or high spots in the wood, but any low spots in the floor must be filled in order to level the plywood. Here’s how we did a recent subfloor repair. ... as they thought the water-based Kilz 3 would get the subfloor too wet and damage it. Things like insulation will also prevent that. Jump to Latest Follow 1 - 13 of 13 Posts. Hardwood floors add style and a distinct look to a room. Lighten the pressure as you move out to the area surrounding the spot for about three to four inches to blend the sanded area with the rest of the floor. But from what? I actually like a good rain after the subfloor is down because it confirms our plane or exposes our low spots. I have a rotten spot of wood in the bathroom subfloor in the corner between the tub and the toilet. You are going to have to start making holes in your floor to find out what is going on under it. >Major damage = Major damage happens when water is allowed to sit on a sub-floor for a long period of time. Depending on the depth of the standing water you may want to utilize a wet vacuum to suck up the bulk of the water. In this case, move on to removing the entire finished floor in the affected area. ... it is possible that the subfloor got some damage making that area softer. Drying a Water-Damaged Subfloor A limited or short-lived leak that's made it as far as the subfloor may not be a big problem, provided you can stop the leak, then dry out the subflooring and any neighboring elements (framing, floor and wall finishes, etc.) Drying out … When you replace the subfloor, the new ends have to sit on the joists, so cut out your wet subfloor along two joists on either side of the damage. The unit is completely clean and dry. Worst case: The floor is rotten from the bottom up, and the subfloor needs replacing, too. Unless you have soft or wet spots in your floor, the only way to know how much work your floor replacement is going to be is to start removing the top layer and see for yourself. The subfloor and joists often become saturated by rain before the roof is installed. You will need to pull up the flooring and repair, or the spot will continue to not only spread … It can’t be removed easily. Lastly, if your sub-floor is weak but not wet it could be from an old leak. Leveling high spots in concrete or wood subfloor If the subfloor is plywood or particle board, start by screwing down loose boards and add more wood screws where needed to secure them. If the wet spots happen when it rains, you have issues with your roof regardless of how good it looks. There are a couple of possible causes. The carpet in front of the toilet (where your feet would be when you're sitting) has small wet spots. Know When to Replace a Subfloor After Water Damage. We are getting ready to install new carpet as we are selling our house. This is not to be confused with their new B-I-N 2 product. If you can feel a soft spot in the floor under the carpet, the subfloor has likely been weakened or damaged. The wood subfloor should not have any damp or dark spots. 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