health concern of asphalt felt paper for hardwood underlayment
The issue, as with alot of chemically treated or fiber-based products, revolves around the material being 'disturbed' and sending particles into the air, which are then inhaled into the lungs...& body...which can cause cancer.
(Side Point: These materials are disturbed, when they are cut into .... for installation purposes. They are also disturbed during any removal process. Much like asbestos pipe insulation. It's fine when left alone but must be removed by a properly licensed company)
Do like Big Dave suggested...rosin paper, that is the common material used today for Wood flooring installations.
- Build Well -