wood floor cupping over crawl space

The factors that affect moisture accumulation include season indoor temperature types of floor insulation and floor covering and type of crawl space see sidebar. The house is over a crawl space that does have some moisture issues.

Is The Flooring Above Your Crawl Space Cupping Or Warping

-I have a ridiculously large crawl space 6 to 14 high underneath over 2300 sq.

. Finally use quarter-sawn flooring to minimize movement. With the passing of Spring break and the upcoming Easter weekend days become longer and temperatures rise. Now that we know the moisture is originating in the crawl space we can begin to assess what measures are required to ensure the floors stop cupping and being certain it does not happen.

The crawl space subfloor underside MC measured 180. The simplest way to think of wood floor cupping is to imagine the edges of each plank sticking up higher than the centers. The one that doesnt work is bringing the wood to the site and allowing it to acclimate.

Next install the flooring over a vapor retarder. I know it should have been a walk out basement but it isnt. Do you know whats going on when your hardwood floor starts cupping.

This is the likely cause of the buckling and cupping. The reason the floors are cupping is that the cellulose in the wood is absorbing moisture and expanding. Because there is nowhere else to go the.

Within wood floors above crawlspaces in hot-humid climates IE climate zones 1A 2A and lower portions of 3A below the warm-humid line 1. Crawl Space Moisture and Hardwood Flooring Crawl Space Moisture and Hardwood FlooringTo understand the cause of wood floors cupping or buckling when youre sure there is no water damage due to a flood or leak you must understand the relationship between relative humidity your wood floor and your crawl spaceDuring the summer months in the. Cover the ground in the crawlspace with black plastic with a minimum thickness of 6 mils.

Ive read a lot on the subject and would like to get opinions for the best solution. In addition to ruining the appearance of a room cupped floors can lead to serious structural problems. If you imagine a picture of a child drawing a boat in the water then the water will give you a good idea of what a cupped floor looks like.

The crawl space vapor retarder had large openings permitting entrance of subsoil moisture. It ends up looking a little like an accordion. 99 of the time that moisture is coming from beneath the sub-floor.

Charlie talks about a liquid applied vapor retarder that seems really slick. The man that installed the floor has done this type of flooring for about 20 years. Elevated Crawl Space Moisture Problems.

Because leaks often take a while to detect they can be especially damaging to hardwood floors due to the prolonged exposure to moisture they cause. First do everything you can to mitigate the moisture in the crawlspace. Cupping occurs when the edges of the board are higher than the center of the board creating a concave shape.

Weather patterns change to a more sub-tropical feel. Any wood floor can suffer from cupping. The subfloor in the hallway was installed over an existing basement with a concrete floor.

Solid and engineered wood flooring can both cup. We had our house built about 7 years ago. Here is my plan please advise if my plan does not help.

When moisture seeps into wood flooring the wood swells and the boards start pushing against one another. The solid wood prefinished floor had been installed over a wood subfloor in the living room and hallway during the previous winter. The hardwood sat in the home for over a week before installation.

I plan on insulatING the block foundation. If your basement or crawl space happens to be affected by dampness it may cause cupping in the floorboards in the room above. I have solid oak flooring thats cupping.

Specifically in the case of cupping the crawl space bottom side of the floor board is exposed to a higher relative humidity than the living space top side of the floor board. I had plastic down in the crawl space. Hardwood Floor Cupping Problems.

In this video I speak about this issue and how it can be a sign of moisture issues in y. The subfloor in the living room and foyer were installed over a crawlspace with no vapor barrier and no ventilation. The condensation forming on the sub floor in the crawl space is diffusing up and into the hard wood flooring.

I have teak wood flooring in my house everywhere but the bath rooms and laundry room. There are certain areas in the house where when you walk across the floor it pops very badly. The cupping may relax some if the crawl RH can be lowered quickly.

Overlap sheets by a minimum of 6 inches and connect the. Dew point levels increase. Thats just something you should do anyway for the health of the building and of its occupants.

I have already placed a much thicker grade of plaster. There are a number of options for preventing this problem. Cupping is the result of a change in moisture content from one side of the flooring board to the other.

There is proper ventilation but we have not gotten to laying a tarp on the dirt. Here are the details. It is the start of the condensation season inside North Carolina crawl spaces.

When water seeps into a plank of wood flooring the side of the board closest to the moisture will expand. January 30 2019 December 19 2017 by Wood Flooring Guy Q. Cupping resulted when the bottom of the wood floor had a higher MC than the top.

My floors are cupping and I have had all kind of suggestions.

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