In warm homes, mold is also more likely to develop. Today it was at 12% or 14% still. Subfloor Replacement. 4 Tips to Remove Moisture from Floating Subfloor ... Water or moisture often gets trapped in floating subfloor. Remove baseboards around affected areas, and pull back carpeting to the nearest wall. You may want to test the subfloors with a different moisture meter as it is possible that the one the builder is using may not be calibrated correctly. Usually, the trapped moisture in the subfloor can be spotted easily because of the darker coloring it has compared to the normal color of the concrete. Is the flooring inside the house now? Open windows, or pull air into the room using a fan. Mold on Subfloor. Fans on the floor are excellent. Make sure to adjust the blade on the saw so that it cuts through the plank, but does not bite into the subfloor. If you’re working with vinyl flooring, cut out sections over the water-damaged subfloor, and plan on replacing them after you complete repairs. Step 1 - Inspect for Trapped Moisture. 3. The most accurate and only method currently excepted by British Standards under British Codes of Practice BS 8203, BS 5325 and BS 8201 to test for moisture in concrete sub-floors, is with the use of a hygrometer humidity box or RH probe. For glue-down wood flooring, use a circular saw to cut out the damaged area, leaving a 1” – 2” wide strip of plank around the perimeter when cutting parallel to the joint. Moisture meters are good tools for getting a feel for relative moisture content over a wide area by simply using the dial that reads zero to 100% and spot-checking points all over the floor. Even if you have access to professional moisture detection meters, subfloor mold can be difficult to discover. Cut and remove any wet underlayment material from the area. Two weeks ago the moisture in the subfloor was 22%; a week ago it was down to 12% or 14% depending where you checked. The owner, Steve Belrose, explains that with homes having poured concrete basement walls instead of block walls these days, more moisture is added into the basement. We discovered the plumbing under the house needed replaced. Use a pry bar to remove any protruding nails and vacuum up the demolition debris. Third, see if you can find a reason for, and possible way of correcting for, the wettest spots. Go over the entire surface in a circular motion and remove any bleach and water that remains. It is likely those materials are also moldy, in which case they should be discarded and replaced. Musty Odors. Subfloor Ventilation and Subfloor Drying Experts - Melbourne. The combination of warm temperatures, water and materials like plywood or OSB is a recipe for a mold disaster. “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. The first step is to remove water immediately with a mop, sponges, towels or a wet/dry vacuum. Welcome to Subfloor Drying.. Our company specialises in the fast drying of subfloor voids (sometime called crawlspace drying) typically caused by all kinds of water ingress and flooding due to stormwater, burst pipes, floods, broken drains, sewer leaks - and also from moisture damage caused by inadequate subfloor ventilation problems. Follow These 3 Steps for How to Remove Urine from a Subfloor: 1. 1. If you ever decide to remove the underlayment, or if you have particle board to remove now in order to refloor, you are in for a chore. Unfortunately, that hasn’t stopped it from being used. Closer to the surface it is a lot lower, around 6% to 10%. Wall and Floor System Basics . Glue-down Wood Floor Repair Process. If there is floor underlay such as a thin layer of particleboard on top of the subfloor, you will need to pry that up and remove it. Get all hands on deck, and remove all the water you can as fast as you can. Wipe the subfloor clean with a dry rag. The musty smell you notice is likely caused by mould growth, which may be forming on debris under this area or in the OSB sheathing of the subfloor itself. If the remaining solid wood is wet, ventilate the area and allow it time to thoroughly dry before installing replacement materials. Also, if there is excess subfloor moisture, mold is more apt to grow. Wipe down the bleached area with a damp rag and remove all the bleach from the subfloor. Because particle board must be screwed and/or glued down, it is difficult to remove. 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