water based finishing

[D.L. Bullock]

I was talking about regular pianos finished with polyurethane varnish.  They
were not outdoors. the gray streaks were the rotting wood and not in the
finish.

DLB

>writes:
>> I know the problem with Polyurethane Varnishes is they are so airtight
>they rot
>> the wood underneath with gray streaks showing after 5-10 years.
>
>Hi D.L. -
>
>I am not familiar with this phenomenon.
>Is this on wood that is outdoors?
>Are the grey streaks in the wood or in the finish?
>Can you elaborate?
>
>Curious...
>
>Mark Potter
>bases-loaded@juno.com