when should pressure treated lumber be used when a ledger is installed to hold a stair assembly? the ledger…

when should pressure treated lumber be used when a ledger is installed to hold a stair assembly? the ledger is less than 2\ thick. the ledger is fastened with lag screws. the ledger is fastened to a concrete floor. the assembly is in an area of high humidity.

when should pressure treated lumber be used when a ledger is installed to hold a stair assembly? the ledger is less than 2\ thick. the ledger is fastened with lag screws. the ledger is fastened to a concrete floor. the assembly is in an area of high humidity.

Answer

Brief Explanations:

Pressure - treated lumber is used to resist decay and rot, especially in high - humidity environments. High humidity can cause non - treated wood to deteriorate. The thickness of the ledger, type of fasteners, or the material of the surface it's fastened to are not the main reasons for using pressure - treated lumber compared to the humidity factor.

Answer:

The assembly is in an area of high humidity.