You must to locate and inspect the area where the floor is swelled up.
Swollen wooden floor.
Wood is porous which means when it is exposed to moisture it can absorb that moisture and swell.
Water damage can have severe consequences that results in wood floor swelling or buckling from the humidity.
Depending on how swollen the wood gets the wooden planks might even pop out of their tongue and groove fastenings.
It is for this reason that solid wood floors need an expansion gap.
The most common reason is lack or not enough big expansion gap around an edge of wooden floor that gap which has been covered by skirting or beading etc the common size is 10mm but best is to check floor manufacturer recommendation.
Luckily there is an easy solution to dealing with swollen hardwood floors.
When humidity is high the wood expands.
Laminate flooring that swells due to moisture should be disassembled and new pieces installed.
Unfortunately one day you find that your wooden front door expanded and it will no longer close smoothly.
It s possible to repair damaged hardwood but you need to correct the moisture.
Stack the planks in order of removal to make cutting easier if it will be necessary.
Solid wood flooring takes in moisture when there is a high level of humidity in the air and then the flooring lets that moisture go when the humidity in the atmosphere reduces again.
Ok depends on how bad the floor has swollen and if its real wood or mdf if mdf throw away and but new if solid wood then you can in some situation take up scotia around the edges and put in new expansion in to allow the floor to lie flat again then allow the floor to dry out till it has a moisture level of around moisture content mc from 5 to 25 percent may be determined using various moisture meters developed for this purpose you may need a dehumidifier to reduce damp.
Fortunately this is not a common occurrence.
Excessive job site moisture.
One of the most common problems related to excess moisture is called buckling wood flooring gets separated from the subfloor that is very often accompanied by cupping or swelling.
Wood floor cupping can be avoided or fixed by following a few simple steps.
To do this remove the baseboard or quarter round and then take the flooring apart one row at a time until you reach the swollen section of flooring.
If your hardwood floors have a wavy appearance they are likely cupping due to we.
Buckling occurs when the wood flooring actually pulls up from the subfloor lifting several inches in one or more places.
Causes of buckling floor as i mentioned above the only culprit is always moisture caused by.