Particleboard flooring help

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Old 02-13-20, 08:43 PM
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Particleboard flooring help

HI i've recently purchased a high set house .No issues came up in inspections however there is a slight dip in the particle board floor where the fridge lives. How can i fix this? The board is solid and there is no indication of bounce at all. Reading some posts a flex filler seems to be the go. Would this be ok then sealing floor? It has luxury vinyl plank flooring which appears to have been glued to floor without sealing in main living area's bedrooms are carpeted. Any sugestions please re what to use ?
 
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Old 02-13-20, 09:01 PM
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If the board was solid, it wouldn't have a dip. Particle board is known for this. Do you have access to the floor below?
 
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Old 02-14-20, 03:56 AM
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IMO the only real fix is to cut out that section of floor and replace it with plywood or OSB. The PB probably got wet somewhere along the line which made it soft and allowed it to sag. The good news is it sounds like the moisture was just a one time event and the PB was able to dry out preventing further damage. I have my doubts of being able to push it back up from below.
 
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Old 02-14-20, 06:23 AM
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Even if the particle board didn't get wet, I've seen it sag over time if a load is placed on it. I think replacing it with something more structural like OSB, a premium OSB product or plywood. This will help spread the refrigerator's weight out over several joists and the OSB/plywood will be able to span the distances between joists without sagging.
 
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Old 02-14-20, 08:33 AM
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If you patch it, you may need to be creative. 3/4 PB and 3/4 plywood are not usually the same thickness. You need to measure your current floor and see how thick it is. Take out a floor vent and measure there. It will let you know what you need to buy.
 
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Old 02-17-20, 04:46 PM
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Particle flooring help

Thank you for the advice gentlemen I sincerely appreciate it.
Should just add additional issue found in the rains we had recently . Board has further dipped and this is due to badly added balcony tiling that slopes slightly back towards the house and appears to have no flashing.. ah diy you have to love it !
 
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Old 02-18-20, 05:45 AM
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Definitely address the flashing/water issue first. If the rim joist, floor joists or wall is getting wet then rot in those areas is a possibility and much more difficult to fix then replacing some floor sheeting.
 
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