Asbestos Paper Under Hardwood

Hardwood floor underlay until maybe the 1950 s up to 85 asbestos.

Asbestos paper under hardwood.

If the material tests positive for asbestos your best bet is to either leave it alone and cover over it with new flooring or have the material professionally removed by an asbestos remediation company. Flooring felt or tar paper is sometimes laid under tile flat carpeting or old linoleum. The asbestos threat is a little overblown but serious enough to take heed. A house we bought had carpet in the kitchen.

Iirc asbestos was first used in the 1890 s in small and specialized applications. First a word of caution prior to the 1980s tar paper and roofing felt often contained asbestos so it s important to have the material tested before attempting to remove it. No scraping or sanding would help. We had no choice but to relay new flooring over that part.

Not uncommon on old fir or pine subfloors. Widespread use in building materials wasn t until the 1930 s. Used to be we just took a machine to it not knowing about asbestos. An added benefit when laying wood floors over plywood is the absorption of vibration by the felt which results in a reduction of noise.

However old asbestos felt remains in the floors and roofs of millions of american buildings constructed between 1900 and 1980. If it has no asbestos it can simply be sanded off with a drum sander and a very low grit paper 12 16 or 24 whatever it takes. We we pulled it up it had tar paper under it. The real problem was the installer glued the carpet with a product that melted the residue from the tar paper into the wood.

If what you found under the vinyl is roofing paper commonly used under flooring and it dates to before the late 1970 s it is possible there is asbestos fiber in it asbestos fiber was commonly used in roofing materials until it was outlawed as stated the only real danger in this is if you create an airborn dust otherwise the asbestos is locked into the material. Common in homes built in the 20th century black mastic was used as an adhesive for ceramic tile linoleum and other flooring materials. The flooring was tested the middle layer contains asbestos. I have just the right amount of click type bamboo flooring suitable for below grade with 3mm thick underlayment and would like to use that.

Asbestos flooring felt is one of the few asbestos products completely banned in the u s and regulations now require other products to contain less than one percent asbestos. Hmmm ending in the 1950 s but when did they start using asbestos in that stuff. Older flooring felt may contain asbestos making its removal critical.