Know before you hire
The rules a wood floor is actually held to
Moisture tolerances, slab testing, and the federal lead rule that governs how a sander is allowed to be set up in a house built before 1978. These are the documents behind the decisions, cited by section.

Cost guides quote prices. These pages quote the standard, so you can check the work against something other than an opinion.
The rules a wood floor is actually held to: the pages
The EPA lead rule decides how a floor sander is allowed to run in an older house
If your home was built before 1978 and someone is paid to sand your floors, federal law is already involved. The EPA Renovation, Repair and Painting.Acclimation is a number, not a waiting period
Most wood floors that cup, gap or crown were installed at the wrong moisture content, not with the wrong technique. The National Wood Flooring.The numbers a stair and a railing are actually held to here
Philadelphia adopts the 2021 International Residential Code as Subcode "R" of the Building Construction and Occupancy Code. That matters more than it.
Send a photo and we will tell you what you are looking at
The rules a wood floor is actually held to starts with someone reading the house. We quote every job ourselves, with no salesperson in between, and a photo of the floor gets you a straight answer faster than a form does.
