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Hardwood floors cupping
Posted on 10/3/21 at 10:29 am
Posted on 10/3/21 at 10:29 am
Haven’t had this house long—remodel with refinished floors. Floors are cupping in places. I’ve been running a dehumidifier in the house—would that cause this? House has a 6” crawl space with ventilation and moisture barrier. It’s not extreme, but enough lifting at the grooves so you notice it.
5
Posted on 10/3/21 at 10:47 am to OldHickory
Odds are it is moisture migration from the crawl space into the house even though you have a vapor barrier and ventilation. “Wet moves to Dry”. I have no clue how one would address this with only a 6 inch crawl space to work with - I’d like to hear others opinion on this. Dehumidifier in the house wouldn’t/shouldn’t be causing this.
Is there not an expansion gap between walls and the last course of wood flooring planks, covered by shoe molding, to allow for expansion of the wooden floor without cupping?
Is there not an expansion gap between walls and the last course of wood flooring planks, covered by shoe molding, to allow for expansion of the wooden floor without cupping?
Posted on 10/3/21 at 10:49 am to CrawDude
I'm have hard wood floors and crawl space. This happens to me. I got used to living with it.
Having crawlspace sprayed with foam might help in winter. I could not get anyone to do it since there is not enough space to crawl
Having crawlspace sprayed with foam might help in winter. I could not get anyone to do it since there is not enough space to crawl
Posted on 10/3/21 at 10:56 am to OldHickory
Is there a need for the dehumidifier? If they are cupping up, then that leads to think the dry top of the boards contracted pulling it into the cupped shape. It's possible the de-humidifier is making it worse.
Posted on 10/3/21 at 11:13 am to Jon A thon
I bought the house in May and it had been sitting empty a few months. I used the humidifier to dry it out get some of the musty smell gone. 1600 sq ft and pulls about a gallon of water a day. I just got used to it and have kept using it.
Posted on 10/3/21 at 12:33 pm to Jon A thon
quote:
Is there a need for the dehumidifier? If they are cupping up, then that leads to think the dry top of the boards contracted pulling it into the cupped shape. It's possible the de-humidifier is making it worse.
this is correct. also, you have moisture in crawlspace.
I wish I knew all the answers but I have been dealing with cupped floors in one way or another for years now. My 80 year old rent house recently had buckled floors with seemingly zero reason.
Posted on 10/3/21 at 12:46 pm to OldHickory
quote:
I’ve been running a dehumidifier in the house—would that cause this?
No, but the moisture you are trying to control would.
Posted on 10/3/21 at 2:51 pm to OldHickory
You mention the floors were refinished. I wonder if they were sealed properly.
Posted on 10/3/21 at 2:53 pm to cypher
That wouldn’t effect them because 70% of the wood is unfinished backside and edges
Posted on 10/3/21 at 6:53 pm to OldHickory
What is the moisture in the wood floor? Had an install once where the moisture content was too high when they were installed and caused gaps. I lived with it.
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