Tar Paper Between Floor And Subfloor

The tar paper was either used to minimize squeaks between the sub floor and underlayment or if it was under the flooring it could have been a tar install linoleum job.

Tar paper between floor and subfloor. Subfloor plywood movement against floor joists especially in cases where bracing has been removed to install air ducting. This method only measures subfloor thickness. After the subfloor is down roll out either felt paper or rosin paper starting next to the longest wall. Installing building paper is a simple task.

But combined with other methods that measure the finish floor you can get a fairly accurate reading of total floor thickness. Felt paper comes in 15 pound and 30 pound options. Black felt paper is rolled out over the wood subfloor prior to installing the new floor. Using tar paper since there is a much greater chance of moister variations in the subfloor there and reducing that transfer to the wood floor.

One section of my house is on slab and that area is using a foam pad with vapor barrier but the floor there is floating and not nailed. This hardwood felt paper is necessary to greatly reduce the chance of any moisture coming up through the subfloor and will help protect the new. And if it was the later it very likely had asbestos in it. As pointed out earlier many suggest that we should install felt paper to stop squeaks felt paper does not stop squeaks usually squeaks are caused by.

If you have an older subfloor constructed of multiple slats rather than large sheets of plywood you can insert your straight edge between the slats.