During warm and humid summers the hardwood floor absorbs moisture from the air swelling and expanding creating pressure between the boards and causing the boards to warp cup or crack.
Hardwood floor cupping dehumidifier.
Any wood floor can suffer from cupping.
In some instances the use of fans and or dehumidifiers might be necessary to bring everything back to normal.
The paper will curl up away from the water.
Sanding so now that you have eliminated the moisture source and dehumidified your space if you still see no change in your floor the cupping as just as severe as before then this calls for more serious action.
Dehumidifiers remove moisture content in the air and if you are lucky a simple dehumidifying session might do the trick and help reverse the hardwood floor cupping.
The simplest way to think of wood floor cupping is to imagine the edges of each plank sticking up higher than the centers.
So your flooring may show signs of staining from small spills the wet floor may also begin to buckle and cup when large amounts of water are absorbed as the planks swell.
To prevent hardwood cupping in a basement situation run a quality dehumidifier that s large enough to handle the area.
Subfloor moisture another common cause of hardwood cupping is a sub floor that has higher moisture content than the wood itself.
As per the national wood floor association nwfa 90 of wood flooring failures are related to relative humidity and moisture problems.
Water is the enemy of hardwood flooring.
My basement was finished by the previous owners about 30 years ago and they put down hardwood floors possibly directly on the concrete.
The general effect is easy to demonstrate by putting a small strip of paper onto a small drop of water.
Consistently high humidity can swell wood by as much as 15.
Cupping also known as wash boarding is the milder form of floor damage.
It ends up looking a little like an accordion.
Water as with just about any household issue is almost always the cause of hardwood floor warping.
Use a unit that drains automatically set it at 35 and let it run all summer long.
Wood floor cupping as the name suggests is a condition where the edges of floorboards curl upward.
Hardwood floor in basement cupping q.
Too much indoor humidity for an extended period will create the adverse effects of cupping and crowning.
Due to the porous nature of wood moisture can be easily absorbed into the material.
It will then take some time for the wood flooring to get back to its normal internal humidity balance and shape.
Picture a typical wooden floor plank.
The edges are higher than the center making the board look like a cup creating an unsightly tripping.
Hardwood floor moisture 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.
Cupping occurs in solid wood flooring as a result of an elevated mc in the bottom of the flooring compared with the mc of the face.
The boards have bowed up in a large section in the center of the floor and you can bounce on them.
It is not hard to see the effect in.
Cupping in solid wood floors.
