Can I use Tyvek under hardwood floors?
Simply so, do I need a vapor barrier under my wood floor?
Wood Subfloors Sometimes, a moisture barrier is not recommended. If you're installing your hardwood floors over a wood subfloor, you should avoid using a moisture barrier. Over time, moisture can get trapped between the moisture barrier protecting your hardwood flooring and the wood subfloor.
Similarly, you may ask, do you put anything under hardwood flooring?
Paper or felt are two materials that are traditionally installed between hardwood flooring and subfloor. However, paper and felt do not absorb sound in any meaningful way, nor do they make the surface any softer to walk on, in the same sense that foam underlayment does with laminate flooring.
Rosin paper is a multi-purpose building paper used underneath hardwood floors as an underlayment. It is used as a moisture-barrier and it allows the wood floor above it to breathe. Installing rosin paper is a critical element in the installation process of any hardwood floor.