I doubt an extra layer of paper under the flooring will have much effect on
sound transmission. You're talking about less than 1/32", and you'll still
have hundreds of nails for sound to travel through.
In any case, if you insist on it I would use two layers of rosin paper
instead of the roofing felt. Roofing felt stinks and will give off fumes as
it slowly off gasses over time. Breathing in tar is not great for your
health over the long term.
You don't really want too much give under a hardwood floor. The tongues and
grooves will rub together as the boards flex, causing squeaks. Probably
increasing the sound transmission you were trying to avoid.
You might have been able to install a layer of that felt backing they use
for laminate floors, then a 3/4" underlayment on top of that. Then your
hardwood flooring would nail to the underlayment. Basically, the entire
floor would "float". This would reduce sound both by increasing mass and by
isolating the floor from the structure. But, it would increase the
thickness of the floor and may cause other issues I'm not aware of.
1. Use only the fastener that the manufacturer recommends, the flooring I
used recommended staples so I purchased the recommended pneumatic stapler.
2. I would not have used roofing felt as I do not see any benefits for the
tar paper but many problems with smell and allergies when used indoors. Be
sure to use rosin or waxed paper between the plywood and the hardwood
3. The flooring you have chosen is a stained maple wood, be aware that maple
does not absorb the stain very deep. Any scratches that go through the
finish and stain will expose the almost pure white wood through the scratch.
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Opt.... Unli..... is devoted to provide excellent and premier wooden
floorings to clients.Our floors not only complemented with high quality but
with peerless durability, artistic tastes and innovative designs that adds
beauty to your treasured space and offers remarkable value for your invested
For more information you can visit on ->:
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