hardwood floor cupping concrete slab
Wood floor pro here that floor will need to be replaced. The floors are 4 or so wide walnut nailed onto plywood laid on sleepers on a very old 50 years plus concrete slab.
Understand Wood Floor Moisture Content Dimensional Change Hardwood Floors Flooring Hardwood
If on a basement zone it for AC and heat too.
. Gluing a wood floor to concrete is inherently risky because concrete is a big sponge that absorbs and releases moisture in an unpredictable and uncontrollable manner. Within seven days you can expect the slab to cure to about 70 percent of full strength. Moisture can pose problems for solid hardwood floors below ground level so engineered wood floors made of layers of wood glued together are the best choice there.
Lay 6-mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. When installing hardwood flooring on basement the concrete must be flat so the tongue and grooves of the hardwood meet and connect. In some cases the concrete might have several low areas.
The slabs moisture level was acceptable and the grading of the yard looked OK as well. Our luxury solid and engineered hardwood flooring is manufactured in-house at our facility in Northern New Jersey allowing us to create floors with an unmatched level of. How do you install hardwood flooring over concrete.
I have had both the manufacturer as well as the company who installed the floor. With dry concrete and the right subfloors and vapor retarders solid hardwood floors can be installed on slabs that are either on-grade at ground level or above-grade above ground level. Manufacturers do not recommend using solid hardwood flooring over a concrete slab.
Alternatively screw rows of treated 1x4s to the concrete 16 in. Its one of the most easily noticeable signs of water damage and in some instances it can be repaired. That is not cupping that is bowing.
It started cupping in places within a month and now the problem has spread to about 70 of the floor. Allow the patching compound to cure completely. Anything from pipe leaks to a still-wet concrete slab to improper HVAC usage can cause cupping.
Wood flooring provides the high-end styling and luxurious feel in upscale high-rise buildings of today. Generally concrete sets in 24 to 48 hours allowing one to walk on it. Wide plank flooring is less stable than narrower widths real not engineered wood.
Good vapor barriers and an air conditioned space even out seasonal movement. What wood floor can I install over a concrete slab. You need to fill any large cracks and be sure that the entire floor is level.
With the improvements in hardwood floors most engineered and longstrip engineered plank floors can be used over a concrete slab. Sanding a cupped floor flat before it is brought to a normal moisture content can eventually result in a crowned floor convex surface once the drying process is complete. Old basement slabs can crack and buckle in places.
Hardwood Flooring for every occasion. Your Concrete Floor or Slab Must Be Flat. Attempting to install wood flooring over a slab that hasnt fully cured can lead to cupping buckling and other installation failures.
Treated plywood to the concrete with concrete screws spaced every 16 in. Gluing a wood floor to anything is inherently risky because this install method allows air movement over the top of the wood but not the bottom encouraging moisture to congregate there. Otherwise youll need to level it.
In both cases your floor will lose its even smoothness resulting in its surface becoming irregular. Moisture level change has made it. After following the outlined steps above for removing all moisture from the area one option is to sand down the hardwood floor.
This happens when the up-side of the floor planks loose moisture and shrink but the down-side does not follow. Cupping would be across the narrow dimension of each board. Cupping is a sign of moisture intrusion bowing is not necessarily.
When one side of the floor is exposed to excessive moisture that side will expand causing the. Brazilian Walnut or Ipe hardwood flooring is installed over a concrete slab as Jesse Bartusek explains how the concrete is tested for moisture content. Treated plywood to the concrete with concrete screws spaced every 16 in.
Cupping is a result of moisture trapped below the floor so tar paper vapor barrier under the flooring. If any area of the floor is off-level by more than ⅜ over a span of 10 this will need to be corrected by the leveling process. Cupping in hardwood floors refers to a condition that causes individual planks to rise at the sides.
The edges of the floor planks are pulled up and the center remains lower. What happens when that moisture releases from the floor and it returns to its original state. Although Buford thought he had learned his lesson about moisture and cupped floors he encountered a similar problem a few weeks later.
I had a very expensive hardwood floor installed on concrete about a year ago. No idea at all of what the RH of the unit is but the temperature averages between 75. Absorbing Moisture Water plays a critical role in the formation of concrete but its the water that remains in the concrete slab that concerns wood flooring contractors.
It can also happen when the down-side of the floor. Wood is hygroscopic meaning that it absorbs and releases moisture. 70 of our floor installed over concrete is cupping.
Cupping occurs when water-damaged hardwood floors begin to rise up at the edges producing a literal cupping effect. It may be considered to be the opposite of crowning where the center of a plank rises higher than the edges. The floor was laid and finished about two months ago.
Once the patching compound has cured use a level to determine if the floor is level. As weve learned wood floor cupping is caused by the expansion of the floor planks due to moisture. However it requires a flat substrate and is sensitive to moisture from above relative humidity of the room and below moisture content of the concrete and self-leveling compound used to make the floor flat.
We offer bespoke hardwood flooring products and consulting services for custom wood flooring and surfaces with a special focus on sustainability and longevity. And in about 28 days the concrete should be approaching full strength. This time he had glued down a 38-inch engineered factory-finished strip floor over a slab.
Lay 6-mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Engineered planks and strip wood floors can be glued directly to a clean dry well-cured.
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