This is called cupping heavy sanding with a drum or orbital sander can actually take down some minor high areas.
Hardwood floor water damage.
One of the most frequent problems we re called in to address is water damage to hardwood floors.
Use fine steel wool to remove wax and sandpaper to remove a surface finish.
By the time a chicagoland homeowner calls us for help the problem will almost always require refinishing and often the replacement of some or all of the damaged wood.
You need to consider that water can penetrate to your floor though many infiltration points whether you have finished or unfished the wood floor.
The truth is water is really harmful for any kind of wood flooring that isn t water resistant.
When water sits on top of hardwood floors it can permanently ruin the hardwood as the wood will absorb the water through its pores causing warping and discoloration.
Resolve the water source problem.
However heavily cupped wood cannot be sanded down flat.
First remove any wax or surface finish.
So if you have a flood or water damage or even just a spill on your hardwood flooring you ll want to remove the water and dry your floors as quickly as possible.
Drying hardwood floors water damage takes a lot of work and resources.
Sand water damaged wood flooring.
Water damage to your hardwood floor.
Depending on the size of the repair area hand sand with a rubber sanding block see b or machine sand with a random orbit sander.