If the crawl space has any moisture problems then wood products should not be used the moisture will make the flooring rot and cup especially around any crawl space access doors in the floor.
Is it ok to put down wood floor in crawlspace.
In this design a concrete pad called a mud pad is poured on the crawl space floor.
Installing a hardwood floor directly over a crawlspace exposes the wood to moisture from the ground and from the air in the crawlspace.
1 x 6 3 spruce is a step up from pallet quality wood but makes a fine usable floor in an unfinished attic space.
The ground floor could be river rock pea gravel dirt floor sand etc.
Vapor barrier on ground floor of crawlspace the most common and correct method for installing a vapor barrier in a crawlspace.
An underlayment is a necessity for any wood floor installation even on a plywood subfloor.
The seams are typically overlapped 6 12 and almost never taped.
Moisture can damage a hardwood floor irreversibly so every installation should include effective safeguards against it.
How to install hardwood flooring over a crawlspace without underlayment.
The warranty may require it.
To make the job easier use a circular saw to cut the plywood sheet first into 2 2 8 strips which will be much easier to handle.
The underlayment provides many benefits including moisture protection sound and thermal insulation and a cushion to make the floor more comfortable to walk on.
Problems with putting wood flooring over a crawlspace.
Wood floors and engineered wood flooring do not perform well in the presence of moisture.
A 6 mil polyethylene vapor barrier is placed over any ground floor.
With and with out a vapor barrier.
Insulation also helps to preserve the air quality and reduce energy costs.
This is essentially a concrete barrier meant to help control moisture in the crawl space this is done several ways.